Biology:Vicetiametra
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Vicetiametra is an extinct genus of crinoids in the family Conometridae.
Description
Members of Vicetiametra have a hemispherical or truncated subconical centrodorsal, with rounded, cirrus-free dorsal sides. Members of the genus have large cirrus sockets without a distinct ridge that are irregularly arranged.[1]
Taxonomy
The genus was first described by Roberto Malaroda in 1950.[2] Vicetiametra is a fossil taxa, dating from the Late Oligocene onwards. The 2008 description of the species Vicetiametra otiakeensis extended the stratigraphic range back further from the Late Eocene to the Late Oligocene, and was the first member of the genus to be discovered in the Southern Hemisphere.[3]
Species
References
- ↑ Rasmussen, H. Wienberg (1978). "Articulata". Treatise on Invertebrate Paleontology, Part T, Echinodermata 2(1). Lawrence KS: University of Kansas. pp. 311–312. ISBN 081373021X. https://journals.ku.edu/InvertebratePaleo/article/view/5649/5123.
- ↑ Malaroda, R. (1950). "Segnalazione di un nuovo crinoid comatulid nel Paleogene Veneto" (in Italian). Rivista Italiana di Paleontologia e Stratigrafia 56: 6–11.
- ↑ 3.0 3.1 , Wikidata Q58623364
- ↑ 4.0 4.1 "Vicetiametra Malarodo, 1950". https://www.gbif.org/species/4874101.
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