| Acer sp. | Acer spitsbergense Schloem.-Jäg. |
| Acer thulense Heer | Acer arcticum Heer |
| Acorus brachystachys Heer | Nordenskioeldia borealis Heer |
| Aesculus longipedunculus Schloem.-Jäg. | "Aesculus" longipedunculus Schloem.-Jäg. |
| Aesculus longipetiolatus Schloem.-Jäg. | |
| Alisma macrophyllum Heer | Haemanthophyllum nordenskioeldii (Heer) Boult. & Kvac. |
| Alnus keferstenii Goepp. | Corylites hebridicus Sew. & Holtt. |
| Craspedodromophyllum sp. div. | |
| Ushia olafsenii (Heer) Boult. & Kvac. | |
| Betula macrophylla Goepp. | Corylites hebridicus Sew. & Holtt. |
| Betula prisca Ett. | Corylites hebridicus Sew. & Holtt. |
| Ushia olafsenii (Heer) Boult. & Kvac. | |
| Carpinus grandis Bud. | Craspedodromophyllum sp. div. |
| Cercidiphyllum arcticum (Heer) Brown | Zizyphoides flabellum (Newb.) Crane, Manch. & Dilch. |
| Cercidiphyllum crenatum (Ung.) Br. p.p. | Trochodendroides richardsonii (Heer) Krysht. |
| Cercidiphyllum elegans Bud. | Trochodendroides crenulata (Heer) Boult. & Kvac. |
| Cercidiphyllum Heerii Bud. | Trochodendroides richardsonii (Heer) Krysht. |
| Cercidiphyllum lyellii Bud. | Trochodendroides crenulata (Heer) Boult. & Kvac. |
| Cercidiphyllum nathorstii Bud. | Trochodendroides richardsonii (Heer) Krysht. |
| Cornus hyperborea Heer | "Cornus" hyperborea Heer |
| Corylopsiphyllum spitsbergianum Bud. | Ushia olafsenii (Heer) Boult. & Kvac. |
| Corylus carpinifolia Bud. | Corylites hebridicus Sew. & Holtt. |
| Corylus macquarrii Forbes | |
| Corylus macquarrii var. microdonta Heer | |
| Corylus scotii Heer | |
| Crataegus antiqua Heer | Ushia olafsenii (Heer) Boult. & Kvac. |
| Crataegus glacialis Heer | Acer arcticum Heer |
| Credneria spectabilis (Heer) Koch | Ushia olafsenii (Heer) Boult. & Kvac. |
| Dennstaedtia blomstrandii (Heer) Holl. | Coniopteris blomstrandii (Heer) Kvac. & Man. |
| Elatocladus (Taxites?) olriki (Heer) Bell | Metasequoia occidentalis (Newb.) Chan. |
| Ephedrites sotzkianus Ung. p.p. | Pseudolarix septentrionalis Schloem.-Jäg. |
| Equisetites nordenskioeldii Nath. nom. nud. | Equisetum arcticum Heer complex |
| Fagus deucaulionis Ung. | Corylites hebridicus Sew. & Holtt. |
| Glyptostrobus ungeri Heer | Glyptostrobus nordenskioeldii (Heer) Br. |
| Grewia crenata Heer p.p. | Trochodendroides crenulata (Heer) Boult. & Kvac. |
| Grewia crenulata Heer | |
| Grewia obovata Heer | |
| Grewiopsis lindstroemianus Bud. | Ushia olafsenii (Heer) Boult. & Kvac. |
| Haemanthophyllum macrophyllum (Heer) Golovn. | Haemanthophyllum nordenskioeldii (Heer) Boult. & Kvac. |
| Haemanthophyllum nordenskioeldii (Heer) Boult. & Kvac. | |
| Hamamelis clarus Holl. | Ushia olafsenii (Heer) Boult. & Kvac. |
| Hamamelis scleronervis Bud. | |
| Hedera macclurii Heer | Zizyphoides flabellum (Newb.) Crane, Manch. & Dilch. |
| Hedera macclurii Heer p.p. | Acer arcticum Heer |
| Trochodendroides crenulata (Heer) Boult. & Kvac. | |
| Trochodendroides richardsonii (Heer) Krysht. | |
| Koelreuteria borealis Heer | "Koelreuteria" borealis Heer |
| Libocedrus gracilis Heer | Cupressinocladus interruptus (Newb.) Schweit. |
| Libocedrus sabiniana Heer | |
| Macclintockia lyellii Heer | Macclintockia dentata Heer |
| Macclintockia tenera Heer | "Macclintockia" tenera Heer |
| Majanthemophyllum boreale Heer | "Majanthemophyllum" boreale Heer |
| Menispermites septentrionalis Holl. | Zizyphoides flabellum (Newb.) Crane, Manch. & Dilch. |
| Nymphaea arctica Heer | Nordenskioeldia borealis Heer |
| Zizyphoides flabellum (Newb.) Crane, Manch. & Dilch. | |
| Nyssa arctica Heer | Nyssidium arcticum (Heer) Ilj. |
| Nyssidium crassum Heer | Nyssidium ekmanii Heer |
| Nyssidium fusiforme Heer | |
| Nyssidium lanceolatum Heer | |
| Nyssidium oblongum Heer | |
| Osmunda spetsbergensis Nath. nom. nud. | Osmunda macrophylla Penh. |
| Osmundites spetsbergensis (Nath.) Kids. & Gwyn.-Vaugh. | Osmunda nathorstii Mill. |
| Phyllites platania (Heer) Sew. & Holtt. | Ushia olafsenii (Heer) Boult. & Kvac. |
| Phyllites sp. | Acer spitsbergense Schloem.-Jäg. |
| Pinus abies (L.) Heer | Pseudolarix septentrionalis Schloem.-Jäg. |
| Pinus impressa Heer | |
| Pinus ungeri Endl. | |
| Planera ulmifolia Schloem.-Jäg. | Ulmites ulmifolius (Schloem.-Jäg.) Kvac., Man. & Boult. |
| Platanus aceroides Goepp. p.p. | Platanus sp. |
| Platanus quercifolia Bud. | Ushia olafsenii (Heer) Boult. & Kvac. |
| Populus arctica Heer | Zizyphoides flabellum (Newb.) Crane, Manch. & Dilch. |
| Populus flabellum Newb. | |
| Populus hookeri Heer | |
| Populus retusa Heer | |
| Populus richardsoni Heer | Dombeyopsis |
| Trochodendroides richardsonii (Heer) Krysht. | |
| Populus zaddachii Heer | Trochodendroides crenulata (Heer) Boult. & Kvac. |
| Potamogeton nordenskioeldii Heer | Haemanthophyllum nordenskioeldii (Heer) Boult. & Kvac. |
| Pteleaecarpum bronnii (Ung.) Weyl. | Craigia bronnii (Ung.) Kvac., Buz. & Manch. |
| Quercus groenlandica Heer | Fagopsis groenlandica (Heer) Wolfe |
| Quercus juglandina Heer | "Quercus" juglandina Heer |
| Quercus olafsenii Heer | Ushia olafsenii (Heer) Boult. & Kvac. |
| Quercus platania Heer | |
| Quercus spinulifera Heer | "Tilia" malmgrenii Heer |
| Quercus steenstrupiana Heer | Ushia olafsenii (Heer) Boult. & Kvac. |
| "Salix" | Celastrinites septentrionalis (Krysht.) Golovn. |
| Salix macrophylla Heer p.p. | Ulmites ulmifolius (Schloem.-Jäg.) Kvac., Man. & Boult. |
| Salix varians Goepp. | ? Juglandaceae gen. et sp. |
| Sequoia brevifolia Heer | Metasequoia occidentalis (Newb.) Chan. |
| Sequoia langsdorfii (Brgn.) Heer | |
| Sequoia disticha Heer | Metasequoia occidentalis (Newb.) Chan. |
| Sequoia langsdorfii (Brgn.) Heer | |
| Sequoia nordenskioeldii Heer | Glyptostrobus nordenskioeldii (Heer) Br. |
| Metasequoia occidentalis (Newb.) Chan. | |
| Sorbus grandifolia Heer | Craspedodromophyllum sp. div. |
| Sphenopteris blomstrandii Heer | Coniopteris blomstrandii (Heer) Kvac. & Man. |
| Taxites olriki Heer p.p. | Pseudolarix septentrionalis Schloem.-Jäg. |
| Taxites olriki Heer p.p. | Metasequoia occidentalis (Newb.) Chan. |
| Taxodium angustifolium Heer | Taxodium dubium (Sternb.) Heer |
| Taxodium distichum miocenum Heer | |
| Taxodium distichum miocenum Heer p.p. | Glyptostrobus nordenskioeldii (Heer) Br. |
| Metasequoia occidentalis (Newb.) Chan. | |
| Parataxodium wigginsii Arn. & Lowt. | |
| Taxodium dubium (Sternb.) Heer | Metasequoia occidentalis (Newb.) Chan. |
| Taxodium tinajorum Heer | |
| Tilia malmgrenii Heer | Corylites hebridicus Sew. & Holtt. |
| Tilia malmgrenii Heer p.p. | "Tilia" malmgrenii Heer |
| Trochodendrocarpus arcticus (Heer) Krysht. | Nyssidium arcticum (Heer) Ilj. |
| Nyssidium ekmanii Heer | |
| Trochodendroides arctica (Heer) Berry | Zizyphoides flabellum (Newb.) Crane, Manch. & Dilch. |
| Trochodendroides spitsbergiana Bud. | Trochodendroides crenulata (Heer) Boult. & Kvac. |
| Ulmus asperrima Nath. nom. nud. | Ulmites ulmifolius (Schloem.-Jäg.) Kvac., Man. & Boult. |
| Ulmus braunii Heer | Corylites hebridicus Sew. & Holtt. |
| Ulmus ulmifolia (Schloem.-Jäg.) Bud. | Ulmites ulmifolius (Schloem.-Jäg.) Kvac., Man. & Boult. |
| cf. Vitis olriki Heer | Acer spitsbergense Schloem.-Jäg. |
