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Tsunyidiscus ✝
| Description | Tsunyidiscus is a genus of eodiscinid agnostid trilobites. Tsunyidiscus occurs near the end of the Lower Cambrian, during the late Atdabanian stage period and some collections suggest it may have survived into the Botomian. They are very small (up to 7mm), have eyes, and equal sized head and tail shields, with a narrow dome-shaped glabella and a narrow bullet-shape pygidial axis. It has a thorax of three segments. Tsunyidiscus is the only genus currently attributed to the family Tsunyidiscidae. From Wikipedia article at https://en.wikipedia.org/wiki/Tsunyidiscus, 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 : Arthropoda : Trilobita : Agnostida : Tsunyidiscidae : Tsunyidiscus | |||||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Arthropoda : Trilobita : Eodiscida : Tsunyidiscidae : Tsunyidiscus | |||||||||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Tsunyidiscus Chang, 1966 | |||||||||||||||||||||||||||||||||||||||||||||
| Name Published In | Acta Palaeont. Sin. 14 (2) | |||||||||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 9 | |||||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 520 - 516 Ma Cambrian | |||||||||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 516 - 513 Ma Cambrian | |||||||||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||
| Motility | fast-moving (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||
| Vision | well-developed (based on Tsunyidiscidae) | |||||||||||||||||||||||||||||||||||||||||||||
| Diet | carnivore (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||
| Ontogeny | molting,addition of parts (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||
| 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/Tsunyidiscus |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Hupeidiscus fengdongensis ✝ species | accepted (GBIF) listed (PBDB) | 1 | 516 Ma Cambrian | 516 Ma Cambrian | |
| Hupeidiscus kunshanensis ✝ species | accepted (GBIF) listed (PBDB) | 1 | 516 Ma Cambrian | 516 Ma Cambrian | |
| Tsunyidiscus aclis ✝ species | accepted (GBIF) listed (PBDB) | 11 | 520 Ma Cambrian | 516 Ma Cambrian | |
| Tsunyidiscus chintingshanensis ✝ species | accepted (GBIF) listed (PBDB) | 1 | 516 Ma Cambrian | 516 Ma Cambrian | |
| Tsunyidiscus fengdongensis species | accepted (GBIF) | No associated record in PBDB | |||
| Tsunyidiscus kunshanensis species | accepted (GBIF) | No associated record in PBDB | |||
| Tsunyidiscus niutitangensis ✝ species | accepted (GBIF) listed (PBDB) | 15 | 520 Ma Cambrian | 516 Ma Cambrian | |
| Tsunyidiscus orientalis species | accepted (GBIF) | No associated record in PBDB | |||
| Tsunyidiscus pertenus ✝ species | accepted (GBIF) listed (PBDB) | 14 | 520 Ma Cambrian | 516 Ma Cambrian | |
| Tsunyidiscus tingi ✝ species | accepted (GBIF) listed (PBDB) | 2 | 516 Ma Cambrian | 516 Ma Cambrian | |
| Tsunyidiscus yanjiazhaiensis ✝ species | accepted (GBIF) listed (PBDB) | 3 | 516 Ma Cambrian | 516 Ma Cambrian | |
Synonymy List
| Year | Name and Author |
|---|---|
| 1966 | Tsunyidiscus Chang |
| 1974 | Hupeidiscus Zhang |
| 1980 | Emeidiscus Li |
| 1980 | Guizhoudiscus Zhang et al. |
| 1980 | Mianxiandiscus Zhang et al. |
| 1980 | Shizhudiscus Zhang et al. |
| 1997 | Tsunyidiscus Whittington et al. p. 387 |
| 2002 | Tsunyidiscus 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!
