Biology:Liroceras
| Liroceras | |
|---|---|
Scientific classification 
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| Script error: No such module "Taxobox ranks".: | Animalia |
| Script error: No such module "Taxobox ranks".: | Mollusca |
| Script error: No such module "Taxobox ranks".: | Cephalopoda |
| Script error: No such module "Taxobox ranks".: | Nautiloidea |
| Script error: No such module "Taxobox ranks".: | Nautilida |
| Script error: No such module "Taxobox ranks".: | †Liroceratidae |
| Script error: No such module "Taxobox ranks".: | †Liroceras Teichert, 1940 |
Liroceras is a genus of nautiloid cephalopod. It is the type genus of the clydonautiliacean family, Liroceratidae, and is characterized by a rapidly expanding, subglobular, nautiliconic shell with a reniform whorl section, small umbilicus, essentially straight sutures, and a siphuncle with a variable but not marginal position.[1]
Liroceras has a temporal range from the Mississippian to the Permian period, the longest of the Liroceratidae. It has been found in North America, Europe, China and the East Indies. A similar genus, Condraoceras, differs in having a circular cross section and shallow ventral and lateral lobes. Another, Bistrialites, also has a reniform whorl section but differs in having a large funnel-shaped umbilicus.[1]
References
- ↑ 1.0 1.1 Bernhard Kummel, 1964. Nautiloidea-Nautilida; Treatise on Invertebrate Paleontology, Part K. Geol Soc of America and Univ of Kansas Press, R. C. Moore (ed) — Liroceratidae K444–K447.
Wikidata ☰ Q6557667 entry
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