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Tropidodiscidae ✝
| Description | Tropidodiscidae is an extinct family of Paleozoic fossil molluscs with isostrophically coiled shells. They are of uncertain position taxonomically, in other words it is not known whether they were (Gastropoda (snails) or Monoplacophora)s. From Wikipedia article at https://en.wikipedia.org/wiki/Tropidodiscidae, 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 : Mollusca : Tropidodiscidae | |||||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Mollusca : Gastropoda : Bellerophontida : Tropidodiscidae | |||||||||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Tropidodiscidae | |||||||||||||||||||||||||||||||||||||||||||||
| Name Published In | Knight, J. B. (1956). New families of Gastropoda. Journal of the Washington Academy of Sciences. 46(2): 41−42. | |||||||||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 145 | |||||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 501 - 485 Ma Cambrian | |||||||||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 254 - 252 Ma Permian | |||||||||||||||||||||||||||||||||||||||||||||
| Motility | slow-moving (based on Bellerophontida) | |||||||||||||||||||||||||||||||||||||||||||||
| Vision | limited (based on Gastropoda) | |||||||||||||||||||||||||||||||||||||||||||||
| Diet | detritivore (based on Bellerophontida) | |||||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | aragonite, low Mg calcite (based on Bellerophontida) | |||||||||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | J. B. Knight. 1956. New families of Gastropoda. Journal of the Washington Academy of Sciences 46(2):41-42 | |||||||||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Tropidodiscidae |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Temnodiscinae ✝ subfamily | listed (PBDB) | 130 | 501 Ma Cambrian | 411 Ma Early/Lower Devonian | |
| Alaskodiscus genus | accepted (GBIF) | No associated record in PBDB | |||
| Eobucania genus | accepted (GBIF) | No associated record in PBDB | |||
| Groomodiscus ✝ genus | accepted (GBIF) listed (PBDB) | 8 | 485 Ma Cambrian | 458 Ma Late/Upper Ordovician | |
| Kosorodiscus ✝ genus | accepted (GBIF) listed (PBDB) | 1 | 419 Ma Early/Lower Devonian | 419 Ma Early/Lower Devonian | |
| Neimongolidiscus ✝ genus | accepted (GBIF) listed (PBDB) | 1 | 408 Ma Early/Lower Devonian | 408 Ma Early/Lower Devonian | |
| Nylanderina ✝ genus | accepted (GBIF) listed (PBDB) | 5 | 412 Ma Early/Lower Devonian | 372 Ma Late/Upper Devonian | |
| Peelerophon genus | accepted (GBIF) | No associated record in PBDB | |||
| Pharetrolites genus | accepted (GBIF) | No associated record in PBDB | |||
| Sinuitina ✝ genus | accepted (GBIF) listed (PBDB) | 42 | 456 Ma Late/Upper Ordovician | 254 Ma Permian | |
| Spirilira ✝ genus | listed (PBDB) | 3 | 323 Ma Carboniferous | 290 Ma Permian | |
| Strepsodiscus genus | accepted (GBIF) | No associated record in PBDB | |||
| Tropidodiscus ✝ genus | accepted (GBIF) listed (PBDB) | 124 | 485 Ma Cambrian | 254 Ma Permian | |
| Vorticina ✝ genus | accepted (GBIF) listed (PBDB) | 19 | 365 Ma Late/Upper Devonian | 279 Ma Permian | |
| Westraliadiscus ✝ genus | accepted (GBIF) listed (PBDB) | 2 | 383 Ma Late/Upper Devonian | 383 Ma Late/Upper Devonian | |
| Zonidiscus genus | accepted (GBIF) | No associated record in PBDB | |||
| Zonidiscus ✝ genus | doubtful (GBIF) listed (PBDB) | 8 | 461 Ma Middle Ordovician | 426 Ma Silurian | |
Synonymy List
| Year | Name and Author |
|---|---|
| 1956 | Tropidodiscinae Knight |
| 1960 | Tropidodiscinae Knight et al. p. 179 |
| 1963 | Tropidodiscinae Horný |
| 1975 | Tropidodiscidae Golikov and Starobogatov p. 207 |
| 1992 | Tropidodiscidae Wahlman p. 63 |
| 1998 | Tropidodiscinae Cook |
| 2000 | Tropidodiscidae Ebbestad and Yochelson |
| 2003 | Tropidodiscidae Rohr et al. |
| 2005 | Tropidodiscidae Bouchet et al. pp. 177, 241 |
| 2020 | Tropidodiscidae Wagner |
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!
