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Showing results for tags 'pteridosperms'.
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Carboniferous Pennsylvanian seed fern specimens (pteridosperms)
ntloux posted a topic in Member Collections
I am attaching images of Pennsylvanian seed ferns that were identified by the collectors. The fossils from Kentucky were generally found in the shale around closed down coal mines on family farms. Hopefully these images may assist others in identifying their specimens. Comments/suggestions/corrections are welcome and I also would appreciate specimen identification beyond the genus level for many of the specimens. The first image is of a Pennsylvanian alethopteris specimen from eastern Kentucky: Pennsylvanian alethopteris from eastern Kentucky. Pennsylvanian cyclopteris (upper right) and macroneuropteris specimens from eastern Kentucky. Pennsylvanian eusphenopteris specimen from eastern Kentucky. Pennsylvanian mariopteris specimen from eastern Kentucky. Pennsylvanian Pecopteris plumosa specimen from Upper Silesia in Poland. Pennsylvanian pecopteris specimen from eastern Kentucky. Pennsylvanian sphenopteris specimen from eastern Kentucky. Pennsylvanian crenulopteris specimen from Mazon Creek, Illinois. A helpful Forum member suggested this could be crenulopteris acadica. This last Pennsylvanian specimen is from Mazon Creek, Illinois identified by one individual as Lobatopteris lamuriana and in addition a helpful Forum member suggested that it is possibly a diplazites unita.- 12 replies
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- 3
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- alethopteris
- carboniferous
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Veggie-exchange: Plant fossils from Piesberg quarry (Germany)
paleoflor posted a topic in Member-to-Member Fossil Trades
L.S., To liberate storage space, I would like to offer the following plant fossils for trade. All specimens below come from the Late Carboniferous of the Piesberg quarry near Osnabrück (Germany). Scale on photographs in centimetres (1 inch = 2.54 cm). Specimens B, C, F and G show neuropterid fronds of various sizes (most likely Laveineopteris rarinervis). Note specimens B and G were recovered broken and have been glued/repaired. Specimen E is a large plate and shows reproductive structures of Calamites (E-1), a Laveineopteris frond (E-2), a strap-like Cordaites leaf, and some Annularia-like leaf whorls. If interested, I could also offer the counterpart of E. If preferable, I can cut specimen F to size (currently large slab of rock for the actual imprint). In general, please note that these specimens are rather large and heavy (I will cover the shipping costs, but you will need space to display these pieces). In return, I would be mainly interested in plant fossils from the Devonian to Cretaceous (but feel free to offer younger material also). Kind regards, Tim Specimen B: Specimen C: Specimen E: Specimen F: Specimen G:- 5 replies
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- 3
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- annularia
- carboniferous
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Scale on photograph. The following classification scheme was adopted: Anderson, J.M., Anderson, H.M., and Cleal, C.J. (2007), Brief history of the gymnosperms: classification, biodiversity, phytogeography and ecology, Strelitzia 20, South African National Biodiversity Institute, Pretoria (LINK).
- 2 comments
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- 1
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- carboniferous
- diplotmema
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The following classification scheme was adopted: Anderson, J.M., Anderson, H.M., and Cleal, C.J. (2007), Brief history of the gymnosperms: classification, biodiversity, phytogeography and ecology, Strelitzia 20, South African National Biodiversity Institute, Pretoria (LINK).
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The following classification scheme was adopted: Anderson, J.M., Anderson, H.M., and Cleal, C.J. (2007), Brief history of the gymnosperms: classification, biodiversity, phytogeography and ecology, Strelitzia 20, South African National Biodiversity Institute, Pretoria (LINK). For identification see: Holmes, W.B.K., and Anderson, H.M. (2005) The Middle Triassic megafossil flora of the Basin Creek Formation, Nymboida Coal Measures, New South Wales, Australia. Part 5. The genera Lepidopteris, Kurtziana, Rochipteris and Walkomopteris. Proceedings of the Linnean Society of New South Wales 126, 39-79.
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The following classification scheme was adopted: Anderson, J.M., Anderson, H.M., and Cleal, C.J. (2007), Brief history of the gymnosperms: classification, biodiversity, phytogeography and ecology, Strelitzia 20, South African National Biodiversity Institute, Pretoria (LINK).
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- australia
- dicroidium
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