Hitta hit:
T-bana: Universitetet
Frescativägen 40

Ordinarie öppettider:
Tisdag-fredag 10-17
Lördag-söndag 10-18

  • Huvudmeny

Publications Else Marie Friis

2020

Crane, P. R. & Friis, E. M., 2020. Water lilies, loss of woodiness, and model systems. Proceedings of the National Academy of Sciences 117: 9674-9676. https://doi.org/10.1073/pnas.2005075117external link 

Friis, E.M., Crane, P. R. & Pedersen, K. R., in press. Melloniflora, a new extinct multiparted flower from the Early Cretaceous of Virginia. International Journal of Plant Sciences.

Mendes, M. M., Pedersen, K. R. & Friis, E. M., 2020. Battenispermum hirsutum gen. et sp. nov., a new Early Cretaceous seed from Portugal with chlamydospermous organisation. Cretaceous Research, vol. 109: 104376. https://doi.org/10.1016/j.cretres.2020.104376external link

2019

Friis, E. M., Crane, P. R. and Pedersen, K. R. 2019. Extinct diversity among Early Cretaceous angiosperms: mesofossil evidence of early Magnoliales from Portugal. International Journal of Plant Sciences 180 (2): 93-127. DOI: 10.1086/701319external link

Friis, E. M., Crane, P. R. and Pedersen, K. R., 2019. Hedyosmum-like fossils in the Early Cretaceous diversification of angiosperms. International Journal of Plant Sciences 180(3): 232-239. DOI: 10.1086/701819external link

Friis, E. M., Crane, P. R and Pedersen, K. R. 2019. The endothelium in seeds of early angiosperms. New Phytologist 224:1419-1424. doi: 10.1111/nph.16024external link

Friis, E. M., Crane, P. R. and Pedersen, K. R., 2019. Chlamydospermous seeds document the diversity and abundance of extinct gnetalean relatives in Early Cretaceous vegetation. International Journal of Plant Sciences 180(7): 643-666. doi: 10.1086/704356external link

Friis, E. M., Crane, P. R. and Pedersen, K. R., 2019. The Early Cretaceous mesosfossil flora of Torres Vedras (NE of Forte da Forca), Portugal: a palaeofloristic analysis of an early angiosperm community. Fossil Imprint, 75: 153-257. http://fi.nm.cz/en/external link

Friis, E. M., Crane, P. R. and Pedersen, K. R., 2019. Geminispermum, an Early Cretaceous (early–middle Albian) cupulate unit from the angiosperm-dominated Puddledock flora of eastern North America. Acta Palaeobotanica 59(2): 229-239. DOI: 10.2478/acpa-2019-0020external link

2018

Friis, E. M., Mendes, M. M. & Pedersen, K. R., 2018. Paisia, an Early Cretaceous eudicot angiosperm flower with pantoporate pollen from Portugal. Grana, 57 (1-2): 1-15. Journal websiteexternal link

Friis, E. M., Crane, P. R. & Pedersen, K. R., 2018. Tanispermum, a new genus of distinctive hemi-orthotropous to hemi-anatropous angiosperm seeds from the Early Cretaceous of eastern North America. American Journal of Botany, 105: 1369-1388.

Friis, E. M., Crane, P. R. & Pedersen, K. R., 2018. Fossil seeds with affinities to Austrobaileyales and Nymphaeales from the Early Cretaceous (early-middle Albian) of Virginia and Maryland, U.S.A: new evidence for extensive extinction near the base of the angiosperm tree. In M. Krings et al. (eds), Transformative Paleobotany: Papers to Commemorate the Life and Legacy of Thomas N. Taylor. Elsevier, Amsterdam, 417-435.

Friis, E. M., Crane, P. R. & Pedersen, K. R. 2018. Extinct taxa of exotestal seeds close to Austrobaileyales and Nymphaeales from the Early Cretaceous of Portugal. Fossil Imprint 74: 135-158. http://fi.nm.cz/wp-content/uploads/2018/08/10_Friis_135158.pdf
external link

Friis, E. M., Crane, P. R. & Pedersen, K. R. . 2018. Rightcania and Kvacekispermum: Early Cretaceous seeds from eastern North America and Portugal provide further evidence of the early chloranthoid diversification. Fossil Imprint 74: 65-76. http://fi.nm.cz/wp-content/uploads/2018/08/6_Friis_65-76.pdf
external link

Manchester, S. R., Golovneva, L. B., Sokoloff, D. D. and Friis, E. M., 2018. Early eudicot reproductive structure: Fruit and flower morphology of Ranunculaecarpus Samyl. from the Early Cretaceous of eastern Siberia. Acta Palaeobotanica 58(2): 121-133. DOI: 10.2478/acpa-2018-0017external link

Mendes, M. M. and Friis, E. M., 2018. The Nossa Senhora da Luz flora from the Early Cretaceous (early Aptian-late Albian) of Juncal in the western Portuguese Basin. Acta Palaeobotanica 58(2): 159-174. DOI: 10.2478/acpa-2018-0015external link.

2017

Friis, E.M., Iglesias, A., Reguero, M. & Mörs, T. 2017. Notonuphar antarctica, an extinct water lily (Nymphaeales) from the Eocene of Antarctica. Plant Systematics and Evolution. https://link.springer.com/article/10.1007/s00606-017-1422-yexternal link

Friis, E. M., Crane, P. R. and Pedersen, K. R., 2017. Saportanthus, an extinct genus of laurales from the Early Cretaceous of Portugal. International Journal of Plant Sciences, Vol. 178 (8): 650-672. Journal websiteexternal link

Friis, E. M., Pedersen, K. R. and Crane, P. R., 2017. Kenilanthus, a new eudicot flower with tricolpate pollen from the Early Cretaceous (early-middle Albian) of eastern North America. Grana, Vol. 56 (3): 161-173. Journal websiteexternal link

Herendeen, P. S., Friis, E. M., Pedersen, K. R. and Crane, P. R., 2017. Palaeobotanical Redux: How Old are the Angiosperms? Nature Plants 3:1-8.

2016

Friis, E. M., Pedersen K. R, Crane P. R. 2016 The emergence of core eudicots: new floral evidence from the earliest Late Cretaceous. Proc. R. Soc. B 283: 20161325. http://dx.doi.org/10.1098/rspb.2016.1325external link

2015

Friis, E. M., Grimm, G. W., Mendes, M. M. and Pedersen, K. R., 2015. Canrightiopsis, a new Early Cretaceous fossil with Clavatipollenites-type pollen bridge the gap between extinct Canrightia and extant Chloranthaceae. Grana 54 (3): 184-212.

Friis, E. M., Crane, P. R., Pedersen, K. R., Stampanoni, M. & Marone, F. 2015. Exceptional preservation of tiny embryos documents seed dormancy in early angiosperms. Nature, doi:10.1038/nature16441

2014

Friis, E. M., Marone, F., Pedersen, K.R., Crane, P.R. and Stampanoni, M., 2014. Three-dimensional visualisation of fossil flowers, fruits, seeds and other plant remains using synchrotron radiation X-ray tomographic microscopy (SRXTM): New insights into Cretaceous plant diversity. Journal of Paleontology 88: 684-701.

Friis, E. M. and Pedersen, K. R., 2014. Blomster fra Kridttiden. Geologisk Tidsskrift 2013: 43-64.

Friis, E. M., Pedersen, K. R. and Crane, P. R., 2014. Welwitschioid diversity in the Early Cretaceous: Evidence from fossil seeds with pollen from Portugal and eastern North America. Grana 53: 175–196.

Friis, E.M., Pedersen, K.R and Marone, F., 2014. Arcellites punctatus sp. nov.: a new megaspore from the Early Cretaceous of Portugal studied using high resolution synchrotron radiation x-ray tomographic microscopy (SRXTM). Grana 53: 91-102.

Mendes, M. M., Dinis, J., Pais, J. and Friis, E. M., 2014. Vegetational composition of the Early Cretaceous Chicalhão flora (Lusitanian Basin, western Portugal) based on palynological and mesofossil assemblages. Review of Palaeobotany and Palynology 200: 65-81.

Mendes, M. M., Grimm, G. W., Pais, J., Friis, E. M., 2014. Fossil Kajanthus lusitanicus gen. et sp . nov from Portugal: Floral evidence for Early Cretaceous Lardizabalaceae (Ranunculales, basal eudicot). Grana 53: 283–301.

2013

Friis, E. M., Pedersen, K. R. and Crane, P. R., 2013. New diversity among Chlamydospermous seeds from the Early Cretaceous of Portugal and North America. International Journal of Plant Sciences 174(3): 530-558.

Friis, E. M., Pedersen, K. R. and Endress, P. K., 2013. Floral structure of extant Quintinia (Paracryphiales, campanulids) compared with the Late Cretaceous Silvianthemum and Bertilanthus. International Journal of Plant Sciences 174(4): 647-664.

2012

Friis, E. M. and Pedersen, K .R, 2012. Bertilanthus scanicus, a new asterid flower from the Late Cretaceous (Late Santonian-Early Campanian) of Scania, Sweden. International Journal of Plant Sciences 173 (3): 318-330.

Hartkopf-Fröder, C., Rust, J., Wappler, T, Friis, E. M. and Viehofen, A., 2012. Mid-Cretaceous charred fossil flowers reveal direct observation of arthropod feeding strategies. Biology Letters 8: 295-298.

Pott, C., McLoughlin, S., Lindström, A., Wu, S. and Friis, E. M., 2012. Baikalophyllum lobatum and Rehezamites anisolobus: Two seed plants with "cycadophyte" foliage from the Early Cretaceous of eastern Asia. International Journal of Plant Sciences 173: 192-208.

Pott, C., McLoughlin, S., Wu, S. and Friis, E. M., 2012. Trichomes on the leaves of Anomozamites villosus sp. nov. (Bennettitales) from the Daohugou beds (Middle Jurassic), Inner Mongolia, China: mechanical defense against herbivorous arthropods? Review of Palaeobotany and Palynology 169: 48-60.

2011

Balthazar, M. von, Crane, P. R., Pedersen, K. R. &  Friis, E. M., 2011. New flowers of Laurales from the Early Cretaceous (Early to Middle Albian) of eastern North America. Pp 49-87 in: Wanntorp, L. and Ronse De Craene, L.P. (Eds.), Flowers on the Tree of Life. Cambridge University Press, Cambridge.

Friis, E. M. and Cantrill, D. J., 2011. GRANA celebrates the publication of Volume 50. Grana 50: 1-2.

Friis, E. M., Crane, P. R. and Pedersen, K. R., 2011. The Early Flowers and Angiosperm Evolution. Cambridge University Press. Cambridge. 600pp.

Friis, E. M. and Pedersen, K. R., 2011. Canrightia resinifera gen. et sp. nov., a new extinct angiosperm with Retimonocolpites-type pollen from the Early Cretaceous of Portugal: missing link in the eumagnoliid tree? Grana 50.

Heřmanová, Z., Kvaček, J. and Friis, E. M., 2011. Budvaricarpus serialis Knobloch & Mai, an unusual new member of the Normapolles complex from the Late Cretaceous of the Czeck Republic. International Journal of Plant Sciences 172: 285-293.

Mendes, M. M, Dinis, J, Pais, J.and Friis, E. M., 2011. Early Cretaceous flora from Vale Painho (Lusitanian basin, western Portugal): An integrated palynological and mesofossil study. Review of Palaeobotany and Palynology 166: 152-162.

2010

Crane, P. R., Friis, E. M. and Chaloner, W. G., 2010. Darwin and the evolution of flowers. Philosophical Transactions of the Royal Society B: Biological Sciences 365: 347-350.

Friis, E. M., Pedersen, K. R. and Crane, P. R., 2010. Diversity in obscurity: fossil flowers and the early history of angiosperms. Philosophical Transactions of the Royal Society B: Biological Sciences 365: 369-382.

Friis, E. M., Pedersen, K. R. and Crane, P. R., 2010. Cretaceous diversification of angiosperms in the western part of the Iberian Peninsula. Review of Palaeobotany and Palynology 162 (3): 341-361.

Kvaček, J. & Friis, E. M. 2010. Zlatkocarpus gen. nov., a new angiosperm reproductive structure with monocolpate-reticulate pollen from the Late Cretaceous (Cenomanian) of the Czech Republic. Grana 49: 115 - 127.

Lindfors, S.M., Csikic, Z., Grigorescuc, D. and Friis, E. M., 2010. Preliminary account of plant mesofossils from the Maastrichtian Budurone microvertebrate site of the Hateg Basin, Romania. Palaeogeography, Palaeoclimate and Palaeoecology 293: 353-359.

Mendes, M. M., Pais, J., Pedersen, K. R. and  Friis, E. M., 2010. Erdtmanithecaportucalensis, a new pollen organ from the Early Cretaceous (Aptian-Albian) of Portugal with Eucommiidites-type pollen. Grana 49: 26-36.

Pott, C., Krings, M., Kerp,  H. and Friis, E. M., 2010. Reconstruction of a bennettitalean flower from the Carnian (Upper Triassic) of Lunz, Lower Austria. Review of Palaeobotany and Palynology 159: 94-111.

Rydin, C. and Friis, E. M., 2010. New Early Cretaceous relative of Gnetales: Siphonospermum simplex gen. et sp. nov. from the Yixian Formation of Northeast China. BMC Evolutionary Biology 10: 183.

2009

Friis, E. M., Pedersen, K. R. & Crane, P. R., 2009. Early Cretaceous mesofossils fromPortugal and eastern North America related to the Bennettitales-Erdtmanithecales-Gnetales group. American Journal of Botany 96(1): 252-283.

Friis, E. M., Pedersen, K. R., von Balthazar, M., Grimm, G.W. & Crane, P.R., 2009. Monetianthus mirus gen. et sp. Nov., a Nymphaealean flower from the Early Cretaceous of Portugal. International Journal of Plant Science 10: 1086-1101.

2008

Mendes, M.M., Friis, E.M. & Pais, J., 2008. Erdtmanispermum  juncalense sp. nov., a new species of the extinct order Erdtmanithecales from the Early Cretaceous (Berriasian) of Portugal. Review of Palaeobotany and Palynology 149 (1-2): 50-56.

Mendes, M.M., Pais, J. and Friis, E.M., 2008. Raunsgaardispermum lusitanicum gen. et sp. nov., a new seed with in situ pollen from the Early Cretaceous (probably Berriasian) of Portugal: Further support for the Bennettitales-Erdtmanithecales-Gnetales link. Grana 47(3): 211-219.

Takahashi, M., Friis, E.M., Herendeen, P.S. and Crane, P.R., 2008. Fossil Flowers of Fagales from the Kamikitaba Locality (Early Coniacian; Late Cretaceous) of Northeastern Japan. International Journal of Plant Sciences 169(7): 899-907.

Takahashi, M., Friis, E.M., Uesugi, K., Suzuki, Y. and Crane, P.R., 2008. Floral evidence of Annonaceae from the Late Cretaceous of Japan. International Journal of Plant Sciences 169(7): 890-898.

Viehofen, A., Hartkopf-Fröder, C. and Friis, E.M., 2008. Inflorescences and flowers of Mauldinia angustiloba sp. nov. (Lauraceae) from mid-Cretaceous karst infillings in the Rhenish Massif, Germany. International Journal of Plant Science, 169(7): 871-889.

von Balthazar, M, Pedersen, K. R., Crane, P. R. and Friis, E. M. 2008 Carpestella lacunata gen. et sp. nov., a new basal angiosperm flower from the Early Cretaceous (Early to Middle Albian) of eastern North America. International Journal of Plant Sciences 169: 890-898.

Yang, X.Y., Friis, E.M. & Zhou, Z.Y., 2008. Ovule-bearing organs of Ginkgo ginkgoidea (Tralau) comb. nov., and associated leaves from the Middle Jurassic of Scania, South Sweden. Review of Palaeobotany and Palynology 149: 1-17.

2007

von Balthazar, M., Pedersen, K.R., Crane, P.R., Stampanoni, M. & Friis, E.M., 2007.Potomacanthus lobatus gen. et sp. nov., a new flower of probable Lauraceae from the Early Cretaceous (Early to Middle Albian) of Eastern North America. American Journal of Botany 94(12): 2041-2053.

Friis, E.M. & Crane, P.R., 2007. New home for tiny aquatics. Nature 446: 269-270.

Friis, E.M., Crane, P.R., Pedersen, K.R., Bengtson, S., Donoghue, P. C. J., Grimm, G. W. & Stampanoni, M., 2007. Phase-contrast X-ray microtomography links
Cretaceous seeds with Gnetales and Bennettitales. Nature 450: 549-552.

Pedersen, K.R., von Balthazar, M. Crane, P.R. &  Friis, E.M., 2007. Early Cretaceous floral structures and in situ tricolpate-striate pollen: New early eudicots from Portugal. Grana46(3):176-196.

Strömberg C.A.E., Friis, E.M., Liang, M.M., Werdelin, L. & Zhang, Y.L., 2007. Palaeoecology of a Middle Miocene lake in China: Preliminary interpretations based on phytoliths from the Shanwang Basin. Vertebrata PalAsiatica 45: 145-160.

Strömberg, C.A.E., Werdelin, L., Friis, E.M. & Saraç, G., 2007. The spread of grass-dominated habitats in the Eastern Mediterranean during the Cainozoic: phytolith evidence. Palaeogeography Palaeoclimatology Palaeoecololgy 250: 18-49.

Takahashi, M., Friis, E.M. & Crane, P.R., 2007. Fossil seeds of Nymphaeales from the Tamayama Formation (Futaba Group), Upper Cretaceous (Early Santonian) of northeastern Honshu, Japan. International Journal of Plant Sciences 168(3): 341-350.

2006

Friis, E.M., Pedersen, K.R. & Crane, P.R. 2006. Cretaceous angiosperm flowers: Innovation and evolution in plant reproduction. Palaeogeography, Palaeoclimatology, Palaeoecology 232: 251-293.

Friis, E.M., Pedersen, K.R. & Schönenberger, J. 2006. Normapolles plants: a prominent component of the Cretaceous rosid diversification. Plant Systematics and Evolution 260: 107-140.

Leng, Q. & Friis, E.M. 2006. Angiosperm leaves associated with Sinocarpus Leng et Friis infructescences from the Yixian Formation (mid-Early Cretaceous) of NE China. Plant Systematics and Evolution 262: 173-187.

Rydin, C., Raunsgaard, K.R., Crane, P.R. & Friis, E.M. 2006. Former diversity of Ephedra (Gnetales): evidence from Early Cretaceous seeds from Portugal and North America. Annals of Botany 98: 123-140.

Rydin, C., Wu, S.Q. & Friis, E.M. 2006. Liaoxia (Gnetales): ephedroids from the Early Cretaceous Yixian Formation in China. Plant Systematics and Evolution 262: 239-265.

2005

Anderson, C.L., Bremer, K. & Friis, E.M., 2005. Dating phylogenetically basal eudicots using rbcL sequences and multiple fossil reference points. American Journal of Botany 92: 1737-1748.

von Balthazar, M., Pedersen, K.R. & Friis, E.M., 2005. Teixeiraea lusitanica , a new fossil flower from the Early Cretaceous of Portugal with affinities to the Ranunculales. Plant Systematics and Evolution 255 : 55-75

Friis, E. M., K. R. Pedersen & Crane, P.R. 2005. When Earth started blooming: insights from the fossil record. Current Opinion in Plant Biology, 8(1): 1-8.

Leng, Q., J. Schönenberger & Friis, E.M. 2005. Late Cretaceous follicular fruits from southern Sweden with systematic affinities to early diverging eudicots. Botanical Journal of the Linnean Society 148: 377-407.

Rydin, C. & Friis, E.M., 2005. Pollen germination in Welwitschia mirabilis Hook. f.: comparing differences between the polyplicate pollen producing genera of the Gnetales. Grana 44: 137-141.

2004

Bremer, K., Friis, E.M. & Bremer, B. 2004. Molecular Phylogenetic Dating of Asterid Flowering Plants Shows Early Cretaceous Diversification. Systematic Biolology 53(3): 496-505

Crane, PR, Herendeen, P & Friis, E.M. 2004. Fossils and plant phylogeny. American Journal of Botany 91: 1683-1699.

Friis, E. M., K. R. Pedersen & Crane, P.R. 2004. Araceae from the Early Cretaceous of Portugal: New evidence on the emergence of monocotyledons. Proceedings of the National Academy of Sciences, USA, 101(47): 16565-16570.

Frumin, S., Eklund, H. & Friis, E.M. 2004. Mauldinia hirsuta sp. nov., a new member of the extinct genus Mauldinia (Lauraceae) from the Late Cretaceous (Cenomanian-Turonian) of Kazakhstan. International Journal of Plant Science 165: 883-895.

Rydin, C., K. R. Pedersen, Friis, E.M. 2004. On the evolutionary history of Ephedra; Cretaceous fossils and extant molecules. Proceedings of the National Academy of Sciences, USA, 101(47): 16571-16576.

2003

Friis, E.M., Doyle, J.A., Endress, P.K. & Leng, Q., 2003. Archaefructus - angiosperm precursor or specialized early angiosperm? Trends in Plant Science 8: 369-373.

Friis, E. M., Pedersen, K. R. & Schönenberger, J., 2003. Endressianthus, a new Normapolles producing plant genus of fagalean affinity from the Late Cretaceous of Portugal. International Journal of Plant Sciences 64 (5 Suppl.): 201-223.

Leng, Q. & Friis, E.-M., 2003. Sinocarpus decussatus gen. et sp. nov., a new angiosperm with basally syncarpous fruits from the Yixian Formation of Northeast China. Plant Systematics and Evolution 241: 77-88.

Leng, Q., Wu, S. & Friis, E.M. 2003. Angiosperms. In: Chang, M. Chen, P., Wang, Y., Wang, Y. & Miao, D. (eds). The Jehol Biota: 178-193, Shanghai, Shanghai Scientific & Technical Publishers.

Oh, I.-C., Denk, T., & Friis, E.-M., 2003. Phylogeny of Illicium (Illiciaceae): Mapping morphological characters on the molecular tree. Plant Systematics & Evolution240: 175-209.

Rydin, C., Mohr, B. & Friis, E.-M., 2003. Cratonia cotyledon gen. et sp. nov.: a unique Cretaceous seedling related to Welwitschia. Biology Letters, The Royal Society of London. Supplement 1, S29.

2002

Rydin, C., Källersjö, M., & Friis, E. M. 2002. Seed plant relationships and the systematic position of Gnetales based on nuclear and chloroplast DNA: conflicting data, rooting problems and the monophyly of conifers. International Journal of Plant Sciences 163: 197-214.

2001

Friis, E. M. 2001. Små blommor - från de stora dinosauriernas tid. Dronten 2001(2): 3-5.

Friis, E. M., Pedersen, K. R. & Crane, P. R. 2001. Fossil evidence of water lilies (Nymphaeales) in the Early Cretaceous. Nature 410: 357-360.

Friis, E. M., Pedersen, K. R. & Crane, P. R. 2001. Origin and radiation of angiosperms. In: Briggs, D. E. G. & Crowther, P. R. (eds). Palaeobiology II: 97-102. Blackwell Science, Oxford.

Matthews, M. L., Endress, P. K., Schönenberger, J. & Friis, E. M. 2001. A comparision of floral structures of Anisophylleaceae and Cunoniaceae and the problem of their systematic position. Annals of Botany 88: 439-455.

Schönenberger, J. & Friis, E. M. 2001. Fossil flowers of ericalean s.l. affinity from the Late Cretaceous of southern Sweden. American Journal of Botany 88: 467-480.

Schönenberger, J., Friis, E. M., Matthews, M. L. & Endress, P. K. 2001. Cunoniaceae in the Cretaceous of Europe: Evidence from fossil flowers. Annals of Botany 88: 423-437.

Schönenberger, J., Pedersen, K. R. & Friis, E. M. 2001. Normapolles flowers of fagalean affinity from the Late Cretaceous of Portugal. Plant Systematics and Evolution 226: 205-230.

2000

Eriksson, O., Friis, E. M. & Löfgren, P. 2000. Seed size, fruit size, and dispersal systems in angiosperms from the Early Cretaceous to the Late Tertiary. The American Naturalist 156: 47-58.

Eriksson, O., Friis, E. M., Pedersen, K. R. & Crane P. R. 2000. Seed size and dispersal systems of Early Cretaceous Angiosperms from Famalicão, Portugal. International Journal of Plant Sciences 161: 319-329.

Friis, E. M. & Pedersen, K. R. 2000. Die fossilen Blüten von Åsen in Schonen, Süd-Sweden. In: Meischner, D. (ed.) Europäische Fossillagerstätten: 151-154, figs 65-72. Springer, Heidelberg.

Friis, E. M., Pedersen, K. R. & Crane, P. R. 2000. Reproductive structure and organization of basal angiosperms from the Early Cretaceous (Barremian or Aptian) of Western Portugal. International Journal of Plant Sciences 161 (6 Supplement): 169-182.

Friis, E. M., Pedersen, K. R. & Crane, P. R. 2000. Angiosperms. In: McGraw-Hill Yearbook of Science & Technology 2001: 17-20.

Friis, E. M., Pedersen, K. R. & Crane, P. R. 2000. Fossil floral structures of a basal angiosperm with monocolpate, reticulate-acolumellate pollen from the Early Cretaceous of Portugal. Grana 39: 226-239.

Mohr, B. A. R. & Friis, E. M. 2000. Early angiosperms from the Lower Cretaceous Aptian Crato Formation (Brazil), a preliminary report. International Journal of Plant Sciences 161 (6 Supplement): 155-167.

Zimmer, E. A., Qiu, Y.-L., Endress, P. K. & Friis, E. M. 2000. Current perspective of basal angiosperms: Introduction. International Journal of Plant Sciences 161 (6 Supplement): 1-2.

Kenrick, P. & Friis, E. M. 1995. Palaeobotany of land plants. Progress in Botany 56: 372-395.

1999

Friis, E. M. & Pedersen, K. R. 1999. Il Cretacico Superiore di Åsen. I: Pinna, G. (ed.) Alle radici della storia naturale d'Europa: 151-154, figs 65-72. Jaca Book, Milano.

Friis, E. M., Pedersen, K. R. & Crane, P. R. 1999. Early angiosperm diversification: the diversity of pollen associated with angiosperm reproductive structures in Early Cretaceous floras from Portugal. Annals of the Missouri Botanical Garden 86: 259-296.

Frumin, S. & Friis, E. M. 1999. Magnoliid reproductive organs from the Cenomanian-Turonian of north-western Kazakhstan: Magnoliaceae and Illiciaceae. Plant Systematics and Evolution 216: 265-288.

Kunzmann, L. & Friis, E. M. 1999. Zum Vorkommen von Koniferensamen mit stark gekrümmten Keimfächern in der oberkreide. Feddes Repertorium 110: 341-347.

1998

Gandolfo, M. A., Nixon, K. C., Crepet, W. L., Stevenson, D. W. & Friis, E. M. 1998. Oldest known fossils of monocotyledons. Nature 394: 532-533.

1997

Eklund, H., Friis, E. M. & Pedersen, K. R. 1997. Chloranthaceous floral structures from the Late Cretaceous of Sweden. Plant Systematics and Evolution 207: 13-42.

Friis, E. M., Crane, P. R. & Pedersen, K. R. 1997. Anacostia, a new basal angiosperm from the Early Cretaceous of North America and Portugal with trichotomocolpate/monocolpate pollen. Grana 36: 225-244.

Friis, E. M., Crane, P. R. & Pedersen, K. R. 1997. Fossil history of magnoliid angiosperms. In: Iwatsuki, K. & Raven, P. H. (eds). Evolution and diversification of land plants: 121-156. Springer Verlag, Tokyo, Berlin, Heidelberg, New York.

Pedersen, K. R. & Friis, E. M. 1997. Fossil flowers from the Cretaceous and the evolutionary history of flowering plants. Geoscience in Århus 23th Nordic Geological Wintermeeting, Århus 1998: 49-52.

Zhilin, S. G., Korchagina, I. A., Potapova, J. J., Friis, E. M. & Frumin, S. 1997. O nakhodke bogatogo paleokarpologicheskogo kompleksa na urobne cenomana-turona b Sarbajskom Karere, Severnyi Kazakhstan. Toporkov Lectures series 3: 190-200. (in Russian)

1996

Friis, E. M. & Endress, P. K. 1996. Flower Evolution. Progress in Botany 57: 253-280.

Friis, E. M. & Pedersen, K. R. 1996. Eucommiitheca, a new pollen organ with Eucommiidites pollen from the Early Cretaceous of Portugal. Grana 35: 104-112.

Friis, E. M. & Pedersen, K. R. 1996. In situ pollen and spores in plant evolution - angiosperm pollen in situ in Cretaceous reproductive organs. In: Jansonius, J. & McGregor, D. C. (eds). Palynology: principles and applications. Vol. 1: 409-426. American Association of Stratigraphic Palynologists Foundation.

Frumin, S. & Friis, E. M. 1996. Liriodendroid seeds from the Late Cretaceous of Kazakhstan and North Carolina, USA. Review of Palaeobotany and Palynology 94: 39-55.

1995

Crane, P. R., Friis, E. M. & Pedersen, K. R. 1995. The origin and early diversification of angiosperms. Nature 374: 27-33.

Friis, E. M., Pedersen, K. R. & Crane, P. R. 1995. Appomattoxia ancistrophora gen. et sp. nov., a new Early Cretaceous plant with similarities to Circaeaster and extant Magnoliidae. American Journal of Botany 82: 933-943.

1994

Crane, P. R., Friis, E. M. & Pedersen, K. R. 1994. Paleobotanical evidence on the early radiation of magnoliid angiosperms. Plant Systematics and Evolution (Supplement) 8: 51-72.

Endress, P. K. & Friis, E. M. (eds.). 1994. Early evolution of flowers. Springer-Verlag, Wien, New York. 229 sid.

Endress, P. K. & Friis, E. M. 1994. Introduction - Major trends in the study of early flower evolution. Plant Systematics and Evolution (Supplement) 8: 1-6.

Friis, E. M., Eklund, H., Pedersen, K. R. & Crane, P. R. 1994. Virginianthus calycanthoides gen. et sp. nov. - A calycanthaceous flower from the Potomac Groups (Early Cretaceous) of eastern North America. International Journal of Plant Sciences 155: 772-785.

Friis, E. M., Pedersen, K. R. & Crane, P. R. 1994. Angiosperm floral structures from the Early Cretaceous of Portugal. Plant Systematics and Evolution (Supplement) 8: 31-49.

Nixon, K. C., Crepet, W. L., Stevenson, D. & Friis, E. M. 1994. A reevaluation of seed plant phylogeny. Annals of the Missouri Botanical Garden 81: 484-533.

Pedersen, K. R., Friis, E. M. & Crane, P. R. 1994. Ultrastructure of pollen from Cretaceous angiosperm reproductive structures. I: Kurmann, M. H. & Doyle, J. A. (eds). Ultrastructure of fossil spores and pollen: 139-159. Royal Botanical Gardens, Kew.

Pedersen, K. R., Friis, E. M., Crane, P. R. & Drinnan, A. N. 1994. Reproductive structures of an extinct platanoid from the Early Cretaceous (latest Albian) of eastern North America. Review of Palaeobotany and Palynology 80: 291-303.

1993

Bocherens, H., Friis, E. M., Mariotti, A. & Pedersen, K. R., 1993. Carbon isotopic abundances in Mesozoic and Cenozoic fossil plants: Palaeoecological implications. Lethaia 26: 347-358.

Crane, P. R., Pedersen, K. R., Friis, E. M. & Drinnan, A. N. 1993. Early Cretaceous (Early to middle Albian) platanoid inflorescences associated with Sapindopsis leaves from the Potomac Group of eastern North America. Systematic Botany 18: 328-344.

Pedersen, K. R., Friis, E. M. & Crane, P. R. 1993. Pollen organs and seeds with Decussosporites Brenner from Lower Cretaceous Potomac Group sediments of eastern USA. Grana 32: 273-289.

1992

Bocherens, H., Friis, E. M., Mariotti, A. & Pedersen, K. R. 1992. Preliminary results of carbon isotopic research of CAM and C4-plants during Mesozoic times. OFP Informations No Spécial 16-B: 28.

Crepet, W. L., Nixon, K. C., Friis, E. M. & Freudenstein, J. V. 1992. The oldest flowers of Hamamelidaceous affinity, from the Upper Cretaceous of New Jersey, North America. Proceedings of the National Academy of Sciences, USA 89: 8986-8989.

Friis, E. M. 1992. Palaeobotany. Progress in Botany 53: 318-340.

Friis, E. M., Pedersen, K. R. & Crane, P. R. 1992. Esgueira gen. nov., fossil flowers with combretaceous features from the Late Cretaceous of Portugal. Biologiske Skrifter, Det Kongelige Danske Videnskabernes Selskab 41: 1-45.

1991

Chaloner, W. G., Friis, E. M. & Hemsley, A. R. 1991. Cycadocephalus Nathorst, a fern not a bennettite. Neues Jahrbuch für Geologie und Paläontologie Monatsheft 183: 347-362.

Crepet, W. L., Friis, E. M. & Nixon, K. C. 1991. Fossil evidence for the evolution of biotic pollination. Philosophical Transactions of the Royal Society of London B 333: 187-195.

Drinnan, A. N., Crane, P. R., Pedersen, K. R. & Friis, E. M. 1991. Angiosperm flowers and tricolpate pollen of buxaceous affinity from the Potomac Group (mid-Cretaceous) of eastern North America. American Journal of Botany 78: 153-176.

Endress, P. K. & Friis, E. M. 1991. Archamamelis, hamamelidalean flowers from the Upper Cretaceous of Sweden. Plant Systematics and Evolution 175: 101-114.

Pedersen, K. R., Crane, P. R., Drinnan, A. N. & Friis, E. M. 1991. Fruits from the mid-Cretaceous of North America with pollen grains of the Clavatipollenites type. Grana 30: 577-590.

Friis, E. M., Crane, P. R. & Pedersen, K. R. 1991. Stamen diversity and in situ pollen of Cretaceous angiosperms. Pollen and Spores: 197-224.

1990

Drinnan, A. N., Crane, P. R., Friis, E. M. & Pedersen, K. R. 1990. Lauraceous flowers from the Potomac Group (mid-Cretaceous) of eastern North America. Botanical Gazette 151: 370-384.

Friis, E. M. 1990. Silvianthemum suecicum gen. et sp. nov., a new saxifragalean flower from the Late Cretaceous of Sweden. Biologiske Skrifter, Det Kongelige Danske Videnskabernes Selskab 36: 1-35.

Friis, E. M. & Endress, P. K. 1990. Origin and evolution of angiosperm flowers. Advances in Botanical Research 17: 99-162.

Friis, E. M. & Pedersen, K. R. 1990. Structure of the Lower Cretaceous fern Onychiopsis psilotoides from Bornholm, Denmark. Review of Palaeobotany and Palynology 66: 47-63.

1989

Crane, P. R., Doyle, J. A., Donoghue, M. J. & Friis, E. M. 1989. Angiosperm origins. Nature 342: 131.

Crane, P. R., Friis, E. M. & Pedersen, K. R. 1989. Reproductive structure and function in Cretaceous Chloranthaceae. Plant Systematics and Evolution 165: 211-226.

Friis, E. M. 1989. Palaeobotany. Progress in Botany 50: 312-326.

Friis, E. M. 1989. Palaeobotany. Progress in Botany 51: 262-277.

Friis, E. M. & Crane, P. R. 1989. Reproductive structures of Cretaceous Hamamelidae. In: Crane, P. R. & Blackmore, S. (eds). Evolution, systematics, and fossil history of the Hamamelidae. Vol. 1. "Lower" Hamamelidae: 155-174. Clarendon Press, Oxford.

Pedersen, K. R., Crane, P. R. & Friis, E. M. 1989. Morphology and phylogenetic significance of Vardekloeftia Harris (Bennettitales). Review of Palaeobotany and Palynology 60: 7-24.

Pedersen, K. R., Crane, P. R. & Friis, E. M. 1989. Pollen organs and seeds with Eucommiidites pollen. Grana 28: 279-294.

Srinivasan, V. & Friis, E. M. 1989. Taxodiaceous conifers from the Upper Cretaceous of Sweden. Biologiske Skrifter, Det Kongelige Danske Videnskabernes Selskab 35: 1-57.

1988

Friis, E. M. 1988. Spirematospermum chandlerae sp. nov., an extinct species of Zingiberaceae from the North American Cretaceous. Tertiary Research 9: 7-12.

Friis, E. M., Crane, P. R. & Pedersen, K. R. 1988. Reproductive structure of Cretaceous Platanaceae. Biologiske Skrifter, Det Kongelige Danske Videnskabernes Selskab 31: 1-55.

1987

Friis, E. M. & Crepet, W. L., 1987. Time of appearance of floral features. In: E.M. Friis, W.G. Chaloner & P.R. Crane (eds) The origins of angiosperms and their biological consequences, 145-179.Cambridge : Cambridge University Press.

Friis, E. M., Chaloner, W. G. & Crane, P. R., 1987. Introduction to angiosperms. In: eds. E.M. Friis, W.G. Chaloner & P.R. Crane (eds) The origins of angiosperms and their biological consequences, 1-15.Cambridge : Cambridge University Press.

Friis, E. M., Chaloner, W. G. & Crane, P. R. (eds), 1987. The origins of angiosperms and their biological consequences. Cambridge : Cambridg eUniversity Press. 358 pp.

Crepet W. L. & Friis, E. M., 1987. The evolution of insect pollination in angiosperms. In: E.M. Friis, W.G. Chaloner & P.R. Crane (eds) The origins of angiosperms and their biological consequences, 181-201,.Cambridge : Cambridg eUniversity Press.

1986

Pedersen, K. R. & Friis, E. M., 1986. Caytonanthus pollen from the Lower and Middle Jurassic. Geoskrifter 24: 255-267 (in Möller, J.T. (ed): Twenty-five years of geology inAarhus ).

Crane, P. R., Friis, E. M., & Pedersen, K. R., 1986. Angiosperm flowers from the Lower Cretaceous: Fossil evidence on the early radiation of the dicotyledons. Science 232: 852-854.

Friis, E. M. Crane, P. R. & Pedersen, K. R., 1986. Floral evidence for Cretaceous chloranthoid angiosperms. Nature 320: 163-164.

1985

Friis, E. M., 1985. Actinocalyx gen. nov., sympetalous angiosperm flowers from the Upper Cretaceous of Sweden. Review of Palaeobotany and Palynology 45: 171-183.

Friis, E. M., 1985. Structure and function in late Cretaceous angiosperm flowers. Niels Bohr Volume, Biologiske Skrifter, Det Kongelige Danske Videnskabernes Selskab 25: 1-37.

Friis, E. M., 1985. Angiosperm fruits and seeds from the Middle Miocene og Jutland (Denmark). Biologiske Skrifter, Det Kongelige Danske Videnskabernes Selskab 24: 1-165.

1984

Friis, E. M., 1984. Preliminary report of upper Cretaceous angiosperm reproductive organs from Sweden and their level of organization. Annals of the Missouri Botanical Garden 71: 403-418.

1983

Friis, E. M., 1983. Upper Cretaceous (Senonian) floral structures of Juglandalean affinity containing Normapolles pollen. Review of Palaeobotany and Palynology 39: 161-188.

1982

Friis, E. M. & Skarby, A., 1982. Scandianthus gen.nov. angiosperm flowers of Saxifragalean affinity from the Upper Cretaceous of southern Sweden. Annals of Botany 50: 569-583.

1981

Friis, E.M. & Skarby, A., 1981. Structural preserved angiosperm flowers from the Upper Cretaceous of Sweden. Nature 291 (5851): 485-486.

1980

Friis, E. M., 1980. Microcarpological studies of Middle Miocene floras of Western Denmark . Unpubl. thesis, 336pp., 47 plates. University of Aarhus.

Friis, H., Nielsen, O. B., Friis, E. M. & Balme, B. E., 1980. Sedimentological and palaeobotanical investigations of a Miocene sequence at Lavsbjerg, Central Jutland, Denmark. Danmarks geologiske Undersøgelse, Årbog 1979: 51-67.

1979

Friis, E. M., 1979. The Damgaard flora: A new Middle Miocene flora from Denmark. Bulletin of the Geological Society of Denmark 27: 117-142.

1977

Friis, E. M., 1977. EM-studies on Salviniaceae megaspores from the Miocene Fasterholt flora, Denmark. Grana 16: 113-128.

Friis, E. M., 1977. Leaf whorls of Cupressaceae from the Miocene Fasterholt flora, Denmark. Bulletin of the Geological Society of Denmark 26: 103-113.

Friis, E. M., 1977. Planter og klima i Tertiärtiden. Varv 1, 22–31.

1976

Friis, E. M. 1976. Ascomycete svampe fra den Miocaene Fas- terholt flora. Dansk Geol. Foren., Arsskrift for 1975, 5-9.

1975

Friis, E.M., 1975. Climatic implications of microcarpological analyses of the Middle Miocene Fasterholt flora. Bulletin of the Geological Society of Denmark 24: 179-192.

1974

Friis, E. M., 1974. En karpologisk undersøgelse af mindre plante fossiler fra den miocæne Odderup formation i Fasterholt, Jylland. Unpubl. Masters thesis, 206 pp.

Friis, E. M., 1974. Taxonomy of the Tertiary fossil fruits Carpolithes oestrupii from the Pleistocene of Denmark. Bulletin of the Geological Society of Denmark 23: 265-268.