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Circothecidae ✝
| Description | Circothecidae are a family of Cambrian problematica, sometimes attributed to the Hyolitha, though some authors suggest (on the basis of no specified evidence) that they're definitely not. From Wikipedia article at https://en.wikipedia.org/wiki/Circothecidae, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | |||||||||||||||||||||||||||||||||||||||
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| Source Data |
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| Rank | family | |||||||||||||||||||||||||||||||||||||||
| Taxonomy (GBIF) | Life : Animalia : Circothecidae | |||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Hyolitha : Orthothecida : Circothecidae | |||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Circothecidae | |||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 45 | |||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 541 - 530 Ma Cambrian | |||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 513 - 501 Ma Cambrian | |||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Hyolitha) | |||||||||||||||||||||||||||||||||||||||
| Motility | stationary (based on Hyolitha) | |||||||||||||||||||||||||||||||||||||||
| Vision | blind (based on Hyolitha) | |||||||||||||||||||||||||||||||||||||||
| Diet | suspension feeder (based on Hyolitha) | |||||||||||||||||||||||||||||||||||||||
| Taphonomy | aragonite (based on Hyolitha) | |||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | A. Y. Rozanov, V. V. Missarzhevsky, and NA Volkova, LG Voronova, IN Krylov, BM Keller, IK Korolyuk, K. Lendzion, R. Mikhnyar, NG Pykhova, AD Sidorov. 1969. Tommotskiu jarus i problema nizhney granisty kembriya. Trudy Geoligske Institut Leningrad 206:1-379 | |||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Circothecidae |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
|---|---|---|---|---|---|
| Circotheca ✝ genus | accepted (GBIF) listed (PBDB) | 33 | 541 Ma Cambrian | 513 Ma Cambrian | |
| Conotheca ✝ genus | listed (PBDB) | 282 | 541 Ma Cambrian | 516 Ma Cambrian | |
| Guduguwan ✝ genus | accepted (GBIF) listed (PBDB) | 20 | 516 Ma Cambrian | 513 Ma Cambrian | |
| Kotuyitheca ✝ genus | accepted (GBIF) listed (PBDB) | 5 | 541 Ma Cambrian | 530 Ma Cambrian | |
| Laratheca ✝ genus | accepted (GBIF) listed (PBDB) | 4 | 541 Ma Cambrian | 530 Ma Cambrian | |
| Larawa ✝ genus | listed (PBDB) | 7 | 513 Ma Cambrian | 513 Ma Cambrian | |
| Paragloborilus ✝ genus | accepted (GBIF) listed (PBDB) | 37 | 541 Ma Cambrian | 520 Ma Cambrian | |
| Turcutheca ✝ genus | accepted (GBIF) listed (PBDB) | 100 | 541 Ma Cambrian | 520 Ma Cambrian |
Obsolete Names
| Name | Source | Taxon Rank | Taxonomy |
|---|---|---|---|
| Larawidae | GBIF | family | Animalia : Larawidae |
Synonymy List
| Year | Name and Author |
|---|---|
| 1969 | Circothecidae Rozanov et al. |
| 1983 | Circothecidae Azmi and Pancholi p. 367 |
| 1990 | Larawidae Kruse p. 42 |
| 2002 | Circothecidae Kruse p. 365 |
| 2010 | Circothecidae Parkhaev and Demidenko p. 931 |
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!
