File:Winneshiek Shale vertebrates and bromalites.png
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English: Other fossils from the Winneshiek biota. (a, b) Bedding plane apparatuses of the conodont Archeognathus primus. (a) Dorso-ventral view (SUI 102853). (b) Oblique view (SUI 139882). (c) Complete, but slightly disturbed, apparatus of the conodont Iowagnathus grandis (SUI 139888). (d) Fragment, probably anterior left, of undescribed bilaterally symmetrical vertebrate plate with anterior to right in the figure (SUI 102856). (e–h) Bromalites. (e) Corrugated rod-like form (SUI 145155). (f) Smoother rod-like form (SUI 145164). (g) Variable form (SUI 145169). (h) Form with concentrated quartz sand (SUI 145166). (a–c) From Liu et al. (2017), reproduced with permission; (d) from Liu et al. (2006); (e–h) after Hawkins et al. (2018, fig. 4). |
| Date | |
| 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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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 23:11, 20 December 2020 | | 1,975 × 1,842 (9.47 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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