Hitta hit:
T-bana: Universitetet
Frescativägen 40

Ordinarie öppettider:
Tisdag–fredag 11–17
Lördag–söndag 10–18

  • Huvudmeny

Publications Timothy Topper

Electronic versions of all these publications can be downloaded from http://www.academia.edu/external link

2023

Goñi, I., Skovsted, C.B., Li, L., Li, G., Betts, M.J., Dorjnamjaa, D., Altanshagai, G., Enkhbaatar, B. and Topper, T.P., 2023. New palaeoscolecid plates from the Cambrian Stage 3 of northern Mongolia. Acta Palaeontologica Polonica 68, xxx-xxx. doi:https://doi.org/10.4202/app.01030.2022external link

Liang, Y., Strotz, L.C., Topper, T.P., Holmer, L.E., Budd, G.E., Chen, Y., Fang, R., Hu, Y. and Zhang, Z., 2023. Evolutionary contingency in lingulid brachiopods across mass extinctions. Current Biology, 33 https://doi.org/10.1016/j.cub.2023.02.038external link

2022

Chen, F., Topper, T.P., Skovsted, C.B., Strotz, L.C., Shen, J. and Zhang, Z., 2022. Cambrian ecological complexities: perspectives from the earliest brachiopod-supported benthic communities in the early Cambrian Guanshan Lagerstätte. Gondwana Research 107: 30-41. https://doi.org/10.1016/j.gr.2022.02.008external link

Li, L., Skovsted, C.B. and Topper, T.P. 2022, Deep origin of the crossed-lamellar microstructure in early Cambrian molluscs. Palaeontology, 65: e12620. https://doi.org/10.1111/pala.12620external link

Li, L., Topper, T.P., Betts, M.J., Dorjnamjaa, D., Altanshagai, G., Enkhbaatar, B., Li, G., & Skovsted, C.B. 2022, Calcitic shells in the aragonite sea of the earliest Cambrian. Geology. doi: https://doi.org/10.1130/G50533.1external link

Liu, F. Skovsted, C. B., Topper, T. P. & Zhang, Z. 2022. Hyolithid-like hyoliths without helens from the early Cambrian of South China, and their implications for the evolution of hyoliths. BMC Ecology and Evolution 22:64. https://doi.org/10.1186/s12862-022-02022-9external link

Liu, F., Skovsted, C.B., Topper, T.P. & Zhang, Z., 2022. A fresh look at the Hyolithid Doliutheca from the Early Cambrian (Stage 4) Shipai Formation of the Three Gorges Area, Hubei, South China. Biology 11(6): 875. https://doi.org/10.3390/biology11060875external link

Topper, T. P., Betts, M. J., Dorjnamjaa, D., Li, G., Li, L., Altanshagai, G., Enkhbaatar, B. & Skovsted, C. B. 2022. Locating the BACE f the Cambrian: Bayan Gol in southwestern Mongolia and global correlation of the Ediacaran-Cambrian boundary. Earth-Science Reviews 229: 104017. https://doi.org/10.1016/j.earscirev.2022.104017external link

2021

Harper, D.A., Stouge, S., Christiansen, J.L., Topper, T.P., Alwmark, C., Richoz, S. and Ahlberg, P., 2021. Early Cambrian brachiopod-dominated shell concentrations from North-East Greenland: Environmental and taphonomic implications. Global and Planetary Change, 204, p.103560. doi.org/10.1016/j.gloplacha.2021.103560external link

Liu, F., Skovsted, C.B., Topper, T.P. & Zhang, Z.-F. 2021. Revision of Triplicatella (Orthothecida, Hyolitha) with preserved digestive tracts from the early Cambrian Chengjiang Lagerstätte, South China. Historical Biology. https://doi.org/10.1080/08912963.2020.1747059external link

Liu, F., Skovsted, C.B., Topper, T.P., & Zhang, Z.-F., 2021. Soft part preservation in hyolithids from the lower Cambrian (Stage 4) Guanshan Biota of South China and its implications. Palaeogeography, Palaeoclimatology, Palaeoecology 562: 110079. https://doi.org/10.1016/j.palaeo.2020.110079external link

McLoughlin, S., Vajda, V., Topper, T. P., Crowley , J. L., Liu, F., Johansson, O. & Skovsted, C. B., 2021. Trace fossils, algae, invertebrate remains and new U-Pb detrital zircon geochronology from the lower Cambrian Torneträsk Formation, northern Sweden. GFF, 143 (2-3): 103-133. https://doi.org/10.1080/11035897.2021.1939775external link

Skovsted, C.B., Topper, T.P., McLoughlin, S., Johansson, O., Liu, F. & Vajda, V. 2021. First discovery of Small Shelly Fossils and new occurrences of brachiopods and trilobites from the early Cambrian (Stage 4) of the Swedish Caledonides, Lappland. GFF. https://doi.org/10.1080/11035897.2021.1895303external link

Zhang, Z., Topper, T.P., Chen, Y., Strotz, L.C., Chen, F., Holmer, L.E., Brock, G.A. and Zhang, Z., 2021. Go large or go conical: allometric trajectory of an early Cambrian acrotretide brachiopod. Palaeontology, 64(5): 727-741. https://doi.org/10.1111/pala.12568external link

2020

Claybourn, T.M., Skovsted, C.B., Holmer, L.E., Pan, B., Myrow, P.M., Topper, T.P., & Brock, G.A. 2020. Brachiopods from the Byrd Group (Cambrian Series 2, Stage 4), Central Transantarctic Mountains, East Antarctica. Papers in Palaeontology. doi: 10.1002/spp2.1295external link

Liu, F., Skovsted, C.B., Topper, T.P., Zhang, Z.-F. & Shu, D., 2020. Are hyoliths Palaeozoic lophophorates? National Science Review, 7(2): 453-469. https://academic.oup.com/nsr/advance-article/doi/10.1093/nsr/nwz161/5606729?searchresult=1external link

Pan, B., Skovsted, C.B., Brock, G.A. Topper, T.P., Holmer, L.E., Li, L. & Li, G., 2020. Early Cambrian organophosphatic brachiopods from the Xinji Formation, Shuiyu section, North China. Palaeoworld 29: 512-533. https://doi.org/10.1016/j.palwor.2019.07.001external link

Topper, T.P., Guo, J., Clausen, S., Skovsted, C. & Zhang, Z., 2020. Reply to ‘Re-evaluating the phylogenetic position of the enigmatic early Cambrian deuterostome Yanjiahella’. Nature Communications 11, 1287. https://doi.org/10.1038/s41467-020-14922-9external link

Zhang, Z., Strotz, L.C., Topper, T.P., Chen, F., Chen, Y., Liang, Y., Zhang, Z., Skovsted, C.B. and Brock, G.A., 2020. An encrusting kleptoparasite-host interaction from the early Cambrian. Nature Communications, 11(1): 1-7. https://doi.org/10.1038/s41467-020-16332-3external link

2019

Claybourn, T. M., Jacquet, S. M., Skovsted, C. B., Topper, T. P., Holmer, L. E. & Brock, G. A., 2019. Mollusks from the upper Shackleton Limestone (Cambrian Series 2), Central Transantarctic Mountains, East Antarctica. Journal of Paleontology 93: 437-459. https://doi.org/10.1017/jpa.2018.84external link

Topper, T. P., Guo, J., Clausen, S., Skovsted, C. B. & Zhang, Z. 2019. A stem group echinoderm from the basal Cambrian of China and the origins of Ambulacraria. Nature communications 10: 1366. https://www.nature.com/articles/s41467-019-09059-3external link

2018

Topper, T.P., Greco, F., Hofmann, A., Beeby, A. & Harper, D.A.T. 2018. Characterization of kerogenous films and taphonomic pathways of the Sirius Passet Lagerstätte, Greenland. Geology 46: 359-362.

Pan, B., Topper, T.P., Skovsted, C.B., Miao, L. & Li, G. 2018. Occurrence of Microdictyon from the lower Cambrian Xinji Formaiton along the southern margin of the North China Platform. Journal of Paleontology 92: 59-70.

Pan, B., Brock, G.A., Skovsted, C.B., Betts, M.J., Topper, T.P. & Li, G.-X. Paterimitra pyramidalis Laurie, 1986, the first tommotiid discovered from the early Cambrian of North China. Gondwana Research 63: 179–185.

Holmer, L.E., Zhang, Z., Topper, T.P., Popov, L.E. & Claybourn, T. 2018. The attachment strategies of Cambrian kutorginate brachiopods – the curious case of two pedicle openings and their phylogenetic significance. Journal of Paleontology 92: 33-39.

Skovsted, C.B. & Topper, T.P. 2018. Mobergellans from the early Cambrian of Greenland and Labrador – new morphological details and implications for the functional morphology of mobergellans. Journal of Paleontology 92: 71-79.

Betts, M.J., Paterson, J.R., Jacquet, S.M., Andrew A.S., Hall, P.A., Jago, J.B., Jagodzinski, E.A., Preiss, W.V., Crowley, J.L., Brougham, T., Mathewson, C.P., Garcia-Bellido, D.C., Topper, T.P., Skovsted, C.B. & Brock, G.A. 2018. Early Cambrian chronostratigraphy and geochronolgy of South Australia. Earth Science Reviews 185: 498-543. doi: 10.1016/j.earscirev.2018.06.005external link

2017

Topper, T.P., Strotz, L., Skovsted, C. & Holmer, L. 2017. Do brachiopods show substrate-related phenotypic variation? A case study from the Burgess Shale. Palaeontology 2: 269-279.

Betts, Marissa J., Paterson, J.R. Jago, J.B., Jacquet, S.M., Skovsted, C.B., Topper, T.P. & Brock, G.A., 2017. Global correlation of the early Cambrian of South Australia. Shelly fauna of the Dailyatia odyssei Zone. Gondwana Research 46: 240-279.

Topper, T.P., Zhang, Z., Gutiérrez-Marco, J.C. & Harper, D.A.T. 2017. The dawn of a dynasty: life strategies of Cambrian and Ordovician brachiopods. Lethaia.

Mao, Y-Q, Zhao, Y-L, Wang, C-W. & Topper, T.P. 2017. A fresh look at Nisusia Walcott, 1905 from the Cambrian Kaili Formation in Guizhou. Palaeoworld 26: 12-24.

Jacquet, S.M., Brougham, T., Skovsted, C.B., Jago, J.B., Laurie, J. R., Betts, M. J., Topper, T.P. & Brock, G. A. 2017. Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia. Geological Magazine 154:1088-1104. DOI: https://doi.org/10.1017/S0016756816000704external link

2016

Betts, M. J., Paterson, J.R. Jago, J.B., Jacquet, S.M., Skovsted, C.B., Topper, T.P. & Brock, G.A., 2016. A new lower Cambrian shelly fossil biostratigraphy for South Australia. Reply. Gondwana Research 44: 262-264.

Betts, M. J., Paterson, J.R. Jago, J.B., Jacquet, S.M., Skovsted, C.B., Topper, T.P. & Brock, G.A., 2016. A new lower Cambrian shelly fossil biostratigraphy for South Australia. Gondwana Research 36: 176-208.

Skovsted, C.B., Pan, B., Topper, T.P., Betts, M.J., Li, G. & Brock, G.A., 2016. The operculum and mode of life of the lower Cambrian hyolith Cupitheca from South Australia and North China. Palaeogeography, Palaeoclimatology, Palaeoecology 443: 123-130.

2015

Topper, T.P., Strotz, L., Holmer, L.E. & Caron, J.-B. 2015. Survival on a soft seafloor: life strategies of brachiopods from the Cambrian Burgess Shale. Earth Science Reviews 151: 266-287

Skovsted, C., Betts, M., Topper, T.P. & Brock, G., 2015. The early Cambrian tommotiid genus Dailyatia from South Australia. Memoir of the Association of Australasian Palaeontologists, 48, pp.1-117

Topper, T.P., Strotz, L., Holmer, L.E., Tait, N.N., Zhang, Z. & Caron, J.-B. 2015. Competition and mimicry: the curious case of chaetae in brachiopods from the middle Cambrian Burgess Shale. BMC Evolutionary Biology 15:42. doi:10.1186/s12862-015-0314-4

Skovsted, C.B., Holmer, L.E., Brock, G.A., Holmer, L.E., Topper, T.P. & Larsson, C.M. 2015. The early Cambrian tommotiid Kulparina rostrata from South Australia. Journal of Paleontology 89(6): 920-932.

2014

Topper, T.P., Holmer, L.E. & Caron, J.-B. 2014. Brachiopods hitching a ride: an early case of commensalism in the middle Cambrian Burgess Shale. Scientific Reports 4, doi: 10.1038/srep06704.

Topper, T.P. & Skovsted, C.B. 2014. A new name for a classic Swedish brachiopod, Tallatella undosa (Moberg).GFF14(3), 429-435.

Larsson, C. M., Skovsted, C.B., Brock, G.A., Balthasar, W., Topper, T.P. & Holmer, L.E. 2014. Paterimitra pyramidalis from South Australia: Scleritome, shell structure and evolution of a lower Cambrian stem group brachiopod. Palaeontology  57(2):417-446.

Betts, M. J., Topper, T.P., Valentine, J.L., Skovsted, C.B., Paterson, J.R. & Brock, G.A. 2014. A new early Cambrian bradoriid (Arthropoda) assemblage from the northern Flinders Ranges, South Australia. Gondwana Research 25(1), 420-437. doi: 10.1016/j.gr.2013.05.007

Jakobsen, K.G., Brock, G.A., Nielsen, A.T., Topper, T.P. & Harper, D.A.T. 2014. Middle Ordovician brachiopods from the Stairway Sandstone, Amadeus Basin, central Australia. Alcheringa 38 (2): 190-208.

Smith, P.M., Brock, G.A., Paterson, J.R. & Topper, T.P. 2014. New bradoriid arthropods from the Giles Creek Dolostone (Cambrian Series 3, Stage 5; Templetonian), Amadeus Basin, central Australia. Memoirs of the Association of Australasian Palaeontologists 45: 233-248.

Skovsted, C.B., Topper, T.P. Betts, M.J. & Brock, G.A. 2014. Associated conchs and opercula of Triplicatelladisdoma from the early Cambrian of South Australia. Alcheringa 38 (1): 148-153.

2013

Topper, T.P., Holmer, L.E., Skovsted, C.B., Brock, G.A., Balthasar, U., Larsson, C.M., Petterson Stolk, S. & Harper, D.A.T. 2013. The oldest paterinid brachiopods from the lower Cambrian of South Australia and the tommotiid- brachiopod transition. Acta Palaeontologica Polonica 58: 93-109.

Topper, T.P., Harper, D.A.T. & Brock, G.A. 2013. Ancestral billingsellides and the evolution and phylogenetic relationships of early rhynchonelliform brachiopods. Journal of Systematic Palaeontology 11 (7), 821-833.

Topper, T.P., Skovsted, C.B., Harper, D.A.T. & Ahlberg, P. 2013. A Bradoriid and Brachiopod Dominated Shelly Fauna from the Furongian (Cambrian) of Västergötland, Sweden. Journal of Paleontology 87 (1): 69-83.

Topper, T.P. Skovsted, C.B., Peel, J.S. & Harper, D.A.T. 2013. Moulting in the lobopodian Onychodictyon from the lower Cambrian of Greenland. Lethaia 46(4), 490-495.

Topper, T. P., Harper, D.A.T. & Ahlberg, P. 2013. Reappraisal of the brachiopod, Acrotreta socialis von Seebach, 1865: Clarifying 150 years of confusion. GFF 135, 191-203.

2011

Skovsted, C.B., Brock, G.A. & Topper, T.P. 2011. Sclerite fusion in the problematic early Cambrian spine-like fossil Stoibostrombus from South Australia. Bulletin of Geosciences86 (3), 651-658.

Skovsted, C.B., Brock, G.A. & Topper, T.P. 2012. First occurrence of a new Ocruranus-like helcionelloid mollusc from the lower Cambrian of East Gondwana. Gondwana Research 22, 256-261.

Topper, T.P., Skovsted, C.B., Brock, G.A. & Paterson, J.R 2011. The oldest bivalved arthropods from the early Cambrian of East Gondwana: systematics, biostratigraphy and biogeography. Gondwana Research19 (1), 310-326.

Skovsted, C.B., Brock, G.A., Topper, T.P., Paterson, J.R. & Holmer, L.E. 2011. Scleritome construction, biofacies, biostratigraphy and systematics of the tommotiid Eccentrotheca helenia sp. nov. from the early Cambrian of South Australia. Palaeontology 54 (2), 253-286.

Topper, T.P., Brock, G.A., Skovsted, C.B. & Paterson, J.R. 2011. Microdictyon plates from the lower Cambrian Ajax Limestone of South Australia: Implications for species taxonomy and diversity. Alcheringa35, 427-443.

2010

Topper, T.P., Brock, G.A., Skovsted, C.B. & Paterson, J.R. 2010. Palaeoscolecid scleritome fragments with Hadimopanella plates from the early Cambrian of South Australia. Geological Magazine147 (1), 86-97.

Strotz, L., Mamo, B., Topper, TP & Bagnato, C.2010. The highest  southern latitude record of a living Tridacna gigas. Malacologia 53 (1), 155-160.

2009

Skovsted, C.B., Holmer, L.E., Larsson, C.M., Högström, A.E.S., Brock, G.A., Topper, T.P., Balthasar, U, Petterson Stolk, S. & Paterson, J.P. 2009. The scleritome of Paterimitra: an Early Cambrian stem group brachiopod from South Australia. Proceedings of the Royal Society of London B 276 (1662), 1651-1656.

Topper, T.P., Brock, G.A., Skovsted, C.B., & Paterson, J.P. 2009. Shelly fossils from the lower Cambrian Pararaia bunyerooensis Zone, Flinders Ranges, South Australia. Memoirs of the Association of Australasian Palaeontologists 37, 199-246.

​2007

Topper, T.P., Skovsted, C.B., Brock, G.A. & Paterson, J.R. 2007. New bradoriids from the lower Cambrian Mernmerna Formation, South Australia: systematics, biostratigraphy and biogeography. Memoirs of the Association of Australasian Palaeontologists 33, 67-100.