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Circothecida ✝
| Source Data |
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| Rank | order (PBDB) | |||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Hyolitha : Orthothecimorpha : Circothecida | |||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Opinions (PBDB) |
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| Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 23 | |||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 541 - 530 Ma Cambrian | |||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 125 - 113 Ma Early/Lower Cretaceous | |||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Hyolitha) | |||||||||||||||||||||||||||||||||||||||
| Motility | stationary (based on Orthothecimorpha) | |||||||||||||||||||||||||||||||||||||||
| Vision | blind (based on Orthothecimorpha) | |||||||||||||||||||||||||||||||||||||||
| Diet | suspension feeder (based on Orthothecimorpha) | |||||||||||||||||||||||||||||||||||||||
| Taphonomy | aragonite (based on Hyolitha) | |||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560 | |||||||||||||||||||||||||||||||||||||||
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Turcuthecidae ✝ family | listed (PBDB) | 26 | 541 Ma Cambrian | 507 Ma Cambrian | |
| Arathecus ✝ genus | listed (PBDB) | ||||
| Asijatheca ✝ genus | listed (PBDB) | 13 | 520 Ma Cambrian | 520 Ma Cambrian | |
| Costatheca ✝ genus | listed (PBDB) | 3 | 520 Ma Cambrian | 125 Ma Early/Lower Cretaceous | |
| Crossbitheca ✝ genus | listed (PBDB) | 3 | 541 Ma Cambrian | 530 Ma Cambrian | |
| Extentitheca ✝ genus | listed (PBDB) | 1 | 530 Ma Cambrian | 530 Ma Cambrian | |
| Khetatheca ✝ genus | listed (PBDB) | 1 | 541 Ma Cambrian | 541 Ma Cambrian | |
| Kunyangotheca ✝ genus | listed (PBDB) | ||||
| Ladatheca ✝ genus | listed (PBDB) | 72 | 541 Ma Cambrian | 520 Ma Cambrian | |
| Leibotheca ✝ genus | listed (PBDB) | ||||
| Mojczatheca ✝ genus | listed (PBDB) | ||||
| Spinulitheca ✝ genus | listed (PBDB) | 8 | 541 Ma Cambrian | 516 Ma Cambrian | |
| Uniformitheca ✝ genus | listed (PBDB) | 22 | 530 Ma Cambrian | 520 Ma Cambrian |
Synonymy List
| Year | Name and Author |
|---|---|
| 1968 | Circothecida Sysoev |
| 2002 | Circothecida Sepkoski, Jr. |
References
| Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560 |
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!
