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Helcionelloida
Source Data |
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Rank | class (PBDB) | |||||||||||||||||||||||||||||||||
Taxonomy (PBDB) | Life : Animalia : Mollusca : Helcionelloida | |||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
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Opinions (PBDB) |
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Taxon Size (PBDB) | 442 | |||||||||||||||||||||||||||||||||
First Recorded Appearance | 541 - 530 Ma Cambrian | |||||||||||||||||||||||||||||||||
Motility | slow-moving (based on Helcionelloida) | |||||||||||||||||||||||||||||||||
Vision | blind (based on Helcionelloida) | |||||||||||||||||||||||||||||||||
Diet | detritivore (based on Helcionelloida) | |||||||||||||||||||||||||||||||||
Ecospace Comments | 322; LIFE HISTORY; Data from personal opinion (Lin, pers. comm.) | |||||||||||||||||||||||||||||||||
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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Helcionellida ✝ order | listed (PBDB) | 1,277 | 541 Ma Cambrian | 485 Ma Cambrian | |
Helcionelliformes ✝ order | listed (PBDB) | ||||
Pelagiellida ✝ order | listed (PBDB) | 366 | 541 Ma Cambrian | 485 Ma Cambrian | |
Ceratoconidae family | accepted (GBIF) listed (PBDB) | 7 | 541 Ma Cambrian | 530 Ma Cambrian | |
Beshtashella ✝ genus | listed (PBDB) | 9 | 520 Ma Cambrian | 516 Ma Cambrian | |
Emargimantus ✝ genus | listed (PBDB) | 2 | 520 Ma Cambrian | 520 Ma Cambrian | |
Michniakia ✝ genus | listed (PBDB) | 1 | 520 Ma Cambrian | 520 Ma Cambrian | |
Rostroconus ✝ genus | listed (PBDB) | 5 | 541 Ma Cambrian | 541 Ma Cambrian |
Synonymy List
Year | Name and Author |
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1991 | Helcionelloida Peel p. 29 |
2002 | Helcionelloida Sepkoski, Jr. |
2006 | Helcionelloida Wotte p. 149 |
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!