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Sinclairoceras ✝
| Description | Sinclairoceras is a nautiloid cephalopod in the discosorid family Westonoceratidae from the Middle Ordovician Simard Limestone of Quebec. The shell is laterally compressed, upwardly curved, and short; an exogastric brevicone with the venter narrowly and dorsum broadly rounded. The dorsum, at the upper surface, is only slightly concave longitudinally. The venter, at the lower surface, is more strongly convex longitudinally, drawing away from the dorsum and forming a hump at the anterior end of the phragmocone where Sinclairoceras reaches its greatest width. From Wikipedia article at https://en.wikipedia.org/wiki/Sinclairoceras, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | ||||||||||||||||||||||||||||||||||||||||||
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| Source Data |
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| Rank | genus | ||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (GBIF) | Life : Animalia : Mollusca : Cephalopoda : Westonoceratidae : Sinclairoceras | ||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Mollusca : Cephalopoda : Discosorida : Westonoceratidae : Sinclairoceras | ||||||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Sinclairoceras Flower, 1952 | ||||||||||||||||||||||||||||||||||||||||||
| Name Published In | J. Paleont., 26 | ||||||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | ||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 2 | ||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 461 - 450 Ma Ordovician | ||||||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 461 - 450 Ma Ordovician | ||||||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Discosorida) | ||||||||||||||||||||||||||||||||||||||||||
| Motility | actively mobile (based on Discosorida) | ||||||||||||||||||||||||||||||||||||||||||
| Vision | well-developed (based on Cephalopoda) | ||||||||||||||||||||||||||||||||||||||||||
| Diet | carnivore (based on Cephalopoda) | ||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | aragonite (based on Discosorida) | ||||||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | R. H. Flower. 1952. New Ordovician Cephalopods from Eastern North America. Journal of Paleontology 26(1):24-59 | ||||||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Sinclairoceras |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Sinclairoceras haha ✝ species | accepted (GBIF) listed (PBDB) | 1 | 461 Ma Middle Ordovician | 461 Ma Middle Ordovician |
Synonymy List
| Year | Name and Author |
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| 1952 | Sinclairoceras Flower p. 47 |
| 1964 | Sinclairoceras Teichert et al. p. 334 |
| 2002 | Sinclairoceras Sepkoski, Jr. |
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
