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Triendoceras ✝
| Description | Triendoceras is a genus of fairly large endocerid named by Flower (1958), included in the Endoceratidae by Teichert (1964), characterized by a holochoanitic ventral siphuncle in which the cross section through the endocones has an opening in the shape of an isosceles triangle with a sharp apex (corner) pointing down. Triendoceras is found in the upper Lower Ordovician of Quebec and New York in North America and possibly in Ohio, and in eastern Europe. The type species is T. montrealense. From Wikipedia article at https://en.wikipedia.org/wiki/Triendoceras, 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 : Endoceratidae : Triendoceras | ||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Mollusca : Cephalopoda : Endocerida : Endoceratidae : Triendoceras | ||||||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Triendoceras Flower, 1958 | ||||||||||||||||||||||||||||||||||||||||||
| Name Published In | J. Paleont. 32 | ||||||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | ||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 4 | ||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 466 - 458 Ma Ordovician | ||||||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 461 - 450 Ma Ordovician | ||||||||||||||||||||||||||||||||||||||||||
| Motility | actively mobile (based on Endocerida) | ||||||||||||||||||||||||||||||||||||||||||
| Vision | well-developed (based on Cephalopoda) | ||||||||||||||||||||||||||||||||||||||||||
| Diet | carnivore (based on Endocerida) | ||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | aragonite (based on Endocerida) | ||||||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | R. H. Flower. 1958. Some Chazyan and Mohawkian Endoceratida. Journal of Paleontology 32(3):433-458 | ||||||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Triendoceras |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Triendoceras davisi ✝ species | accepted (GBIF) listed (PBDB) | 3 | 461 Ma Middle Ordovician | 461 Ma Middle Ordovician | |
| Triendoceras montrealense ✝ species | accepted (GBIF) listed (PBDB) | 1 | 466 Ma Middle Ordovician | 466 Ma Middle Ordovician | |
| Triendoceras orthoseptatum ✝ species | accepted (GBIF) listed (PBDB) | 1 | 466 Ma Middle Ordovician | 466 Ma Middle Ordovician |
Synonymy List
| Year | Name and Author |
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| 1958 | Triendoceras Flower p. 453 |
| 1964 | Triendoceras Teichert et al. p. 176 |
| 1995 | Triendoceras Frey p. P36 |
| 2002 | Triendoceras 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!
