Rizosceras Hyatt, 1884
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https://doi.org/10.5852/ejt.2025.978.2801 |
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lsid:zoobank.org:pub:422E6F06-B4C8-4840-854C-811145D88B32 |
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persistent identifier |
https://treatment.plazi.org/id/93268783-962D-707D-FD97-FC19FAB6FB13 |
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Plazi (2025-03-07 10:46:31, last updated 2025-03-07 11:32:00) |
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scientific name |
Rizosceras Hyatt, 1884 |
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Genus Rizosceras Hyatt, 1884
Type species
Orthoceras indocile Barrande, 1866 from Kocorc, Bohemia, Czech Republic, Middle Silurian; by original designation.
Diagnosis
Compressed, rapidly enlarging, straight to faintly curved brevicones with hyponomic sinus and distinct, faintly rugose transverse surficial ornament; siphuncle ventrally positioned near conch margin; septal necks cyrtochoanitic; siphuncular segments cardioid in dorsoventral section. (Adopted from Sweet 1964b.)
Barrande J. 1866. Systeme Silurien du centre de la Boheme, I. ere partie, Recherches Paleontologiques, vol. II, Classe de Mollusques, Ordre des Cephalopodes, ser. 7. Privately published, Praha. https://doi.org/10.5962/bhl.title.14776
Hyatt A. 1884. Genera of fossil cephalopods. Proceedings of the Boston Society of Natural History 22: 253-338. Available from https://www.biodiversitylibrary.org/page/42025344 [accessed 20 Jan. 2025].
Sweet W. C. 1964 b. Oncocerida. In: Moore R. C. (ed.) Treatise on Invertebrate Paleontology, Part K, Mollusca 3: K 277 - K 319. University of Kansas Press, Boulder, CO.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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