Platyceras
{{Short description|Extinct genus of gastropods}}
{{italic title}}
{{Automatic taxobox
| fossil_range = Silurian-Middle Triassic
~{{fossil range|439|221}}
| image = PlatycerasLoganOhio.jpg
| image_caption = Platyceras pulcherrimum from the Logan Formation (Mississippian) of Wooster, Ohio)
| taxon = Platyceras
| authority = Conrad, 1840
| synonyms=
- Acroculia Phillips 1841
- Actita Fahrenkohl 1844
| subdivision_ranks = Species
| subdivision =
| type_species =
}}
File:Platyceras Floresta.JPG, Boyacá, Colombia]]
Platyceras is a genus of extinct Paleozoic sea snails, marine gastropod mollusks in the family Platyceratidae. This genus is known from the Silurian to the Middle Triassic periods and especially abundant in the Devonian and Carboniferous.Paleobiology Database. [https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=9117 Platyceras] at Fossilworks.org It is the type genus of the family Platyceratidae.
Description
Platyceras has a distinctive, curved conical shape that is easily recognized. The cap-like shell is high and broad anteriorly. The posterior portion of the shell, at the apex, is usually slightly coiled in an asymmetrical fashion. Frequently, the front portions of the shells are broken, though the posterior sections are relatively well preserved. Platyceras is particularly abundant in Devonian deposits (416 million to 359 million years old). Platyceras and other platyceratid gastropods are known for the complex symbiotic relationships they had with crinoids.Baumiller T. K. (2003). "Evaluating the interaction between platyceratid gastropods and crinoids; a cost-benefit approach". Palaeogeography, Palaeoclimatology, Palaeoecology 201(3-4): 199-209. {{doi|10.1016/S0031-0182(03)00625-4}}.
Distribution
References
{{portal|Paleontology}}
{{Reflist}}
- T. A. Conrad. 1840. Third annual report on the palaeontological department of the survey. New York Geological Survey, Annual Report 4(1):199-207
= Bibliography =
- {{citation |last=Mojica |first=Jairo |last2=Villarroel A |first2=Carlos |year=1984 |title=Contribución al conocimiento de las unidades paleozoicas del área de Floresta (Cordillera Oriental Colombiana; Departamento de Boyacá) y en especial al de la Formación Cuche |url=http://www.bdigital.unal.edu.co/31307/1/30462-110259-1-PB.pdf |journal=Geología Colombiana |volume=13 |pages=55–80 |accessdate=2017-03-31}}
{{Taxonbar|from=Q2689745}}
Category:Silurian first appearances
Category:Prehistoric molluscs of North America
Category:Devonian animals of South America
Category:Paleozoic life of Ontario
Category:Paleozoic life of Manitoba
Category:Paleozoic life of New Brunswick
Category:Paleozoic life of the Northwest Territories
Category:Paleozoic life of Nova Scotia
Category:Paleozoic life of Nunavut