File:Winneshiek Shale arthropod fragments.png
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[edit]DescriptionWinneshiek Shale arthropod fragments.png |
English: Eurypterid and other arthropods from the Winneshiek biota. (a–g) The megalograptid eurypterid Pentecopterus decorahensis. (a) The second prosomal appendage rotated and showing the array of spines projecting posteriorly (SUI 139941). (b) Dorsal view of the adult; reconstruction by James Lamsdell (West Virginia University). (c) Complete appendage. (SUI 102857). (d) Body segments 4 and 5 showing median rows of scales (SUI 139931, images of part and counterpart superimposed). (e) Appendage 5 isolated from the shale (SUI 139998). (f) Cuticle fragment of underside of prosoma showing setae (SUI 140011). (g) Prosomal appendages 2–4 of a juvenile (SUI 139965). (h, i) Small carbonaceous fossils. (h) Crustacean-type filter plate (SUI 143632-1, WS-9(1), O41/4). (i) Possible euchelicerate coxa (SUI 143607-1, WS-14(1), G49). (a–g) From Lamsdell et al. (2015b); (h, i) from Nowak et al. (2018). |
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Source | The Winneshiek biota: exceptionally well-preserved fossils in a Middle Ordovician impact crater. Journal of the Geological Society (2018) 175 (6): 865–874. https://doi.org/10.1144/jgs2018-101 |
Author | Derek E.G. Briggs; Huaibao P. Liu; Robert M. McKay; Brian J. Witzke |
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current | 23:11, 20 December 2020 | ![]() | 1,975 × 2,137 (7.39 MB) | NGPezz (talk | contribs) | Uploaded a work by Derek E.G. Briggs; Huaibao P. Liu; Robert M. McKay; Brian J. Witzke from The Winneshiek biota: exceptionally well-preserved fossils in a Middle Ordovician impact crater. ''Journal of the Geological Society'' (2018) '''175''' (6): 865–874. https://doi.org/10.1144/jgs2018-101 with UploadWizard |
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