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Trinodus ✝
| Description | Trinodus is a very small to small (about 1 centimetre or 0.39 inches) blind trilobite, a well known group of extinct marine arthropods, which lived during the Ordovician (Tremadocian to early Hirnantian), in what are now the Yukon Territories, Virginia, Italy, Czech Republic, Poland, Denmark, Sweden, Svalbard, Ireland, Scotland, Wales, Iran, Kazakhstan and China. It is one of the last of the Agnostida order to survive. From Wikipedia article at https://en.wikipedia.org/wiki/Trinodus, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | |||||||||||||||||||||||||||||||||||||||||||||
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| Rank | genus | |||||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (GBIF,PBDB) | Life : Animalia : Arthropoda : Trilobita : Agnostida : Metagnostidae : Trinodus | |||||||||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Trinodus M'Coy, 1846 | |||||||||||||||||||||||||||||||||||||||||||||
| Name Published In | in Griffith, Syn. Silurian Foss. Ireland | |||||||||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 7 | |||||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 485 - 485 Ma Paleozoic | |||||||||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 450 - 444 Ma Paleozoic | |||||||||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||
| Motility | slow-moving (based on Agnostida) | |||||||||||||||||||||||||||||||||||||||||||||
| Vision | blind (based on Metagnostidae) | |||||||||||||||||||||||||||||||||||||||||||||
| Diet | detritivore (based on Agnostida) | |||||||||||||||||||||||||||||||||||||||||||||
| Ontogeny | molting,addition of parts (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||
| Ecospace Comments | BODY SIZE: Data from Whittington et al. (1997). | |||||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | low Mg calcite, chitin (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560 | |||||||||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Trinodus |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Trinodus agnostiformis ✝ species | accepted (GBIF) listed (PBDB) | 5 | 461 Ma Middle Ordovician | 458 Ma Late/Upper Ordovician | |
| Trinodus cylindricus ✝ species | accepted (GBIF) listed (PBDB) | 1 | 453 Ma Late/Upper Ordovician | 453 Ma Late/Upper Ordovician | |
| Trinodus elspethi ✝ species | accepted (GBIF) listed (PBDB) | 8 | 461 Ma Middle Ordovician | 458 Ma Middle Ordovician | |
| Trinodus girvanensis species | accepted (GBIF) | No associated record in PBDB | |||
| Trinodus jujuyensis ✝ species | accepted (GBIF) listed (PBDB) | 4 | 485 Ma Cambrian | 485 Ma Cambrian | |
| Trinodus saltaensis ✝ species | accepted (GBIF) listed (PBDB) | 1 | 485 Ma Cambrian | 485 Ma Cambrian | |
| Trinodus tardus ✝ species | accepted (GBIF) listed (PBDB) | 8 | 458 Ma Late/Upper Ordovician | 450 Ma Late/Upper Ordovician | |
| Trinodus valmyensis species | accepted (GBIF) | No associated record in PBDB | |||
Synonymy List
| Year | Name and Author |
|---|---|
| 1846 | Trinodus M'Coy |
| 1957 | Trinodus Harrington and Leanza |
| 1980 | Trinodus Owen and Bruton |
| 1997 | Trinodus Whittington et al. p. 377 |
| 2002 | Trinodus Jell and Adrain p. 455 |
| 2002 | Trinodus Sepkoski, Jr. |
| 2009 | Trinodus Owens and Fortey |
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!
