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Helcionopsis ✝
Source Data |
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Rank | genus (PBDB) | ||||||||||||||||||||||||||||||||||||||||||||||||
Taxonomy (PBDB) | Life : Animalia : Mollusca : Tergomya : Tryblidiida : Tryblidiidae : Helcionopsis | ||||||||||||||||||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
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Opinions (PBDB) |
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Status (PBDB) | extinct | ||||||||||||||||||||||||||||||||||||||||||||||||
Taxon Size (PBDB) | 7 | ||||||||||||||||||||||||||||||||||||||||||||||||
First Recorded Appearance | 479 - 468 Ma Ordovician | ||||||||||||||||||||||||||||||||||||||||||||||||
Last Recorded Appearance | 450 - 444 Ma Paleozoic | ||||||||||||||||||||||||||||||||||||||||||||||||
Motility | actively mobile (based on Tryblidiida) | ||||||||||||||||||||||||||||||||||||||||||||||||
Vision | blind (based on Tergomya) | ||||||||||||||||||||||||||||||||||||||||||||||||
Diet | grazer (based on Tryblidiida) | ||||||||||||||||||||||||||||||||||||||||||||||||
Primary Reference (PBDB) | E. O. Ulrich and W. H. Scofield. 1897. The Lower Silurian Gastropoda of Minnesota. The Paleontology of Minnesota 39(2):813-1081 |
Fossil Distribution
Subtaxa
Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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Helcionopsis depressum ✝ species | listed (PBDB) | 10 | 461 Ma Middle Ordovician | 461 Ma Middle Ordovician | |
Helcionopsis radiatum ✝ species | listed (PBDB) | ||||
Helcionopsis reticulatus ✝ species | listed (PBDB) | ||||
Helcionopsis striata ✝ species | listed (PBDB) | 1 | 452 Ma Late/Upper Ordovician | 452 Ma Late/Upper Ordovician | |
Helcionopsis subcarinata ✝ species | listed (PBDB) | ||||
Helcionopsis wisconsinensis ✝ species | listed (PBDB) | 5 | 461 Ma Middle Ordovician | 461 Ma Middle Ordovician |
Synonymy List
Year | Name and Author |
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1897 | Helcionopsis Ulrich and Scofield |
1960 | Helcionopsis Knight and Yochelson p. 79 |
1970 | Helcionopsis Starobogatov p. 301 |
1976 | Helcionopsis Runnegar and Jell p. 119 |
1992 | Helcionopsis Wahlman |
2002 | Helcionopsis 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!