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Acanthothyropsis
Taxonomy
Acanthothyropsis was named by Kamyshan (1973) [Sepkoski's age data: J Aale J Bajo Sepkoski's reference number: 1091]. Its type is Rhynchonella crossi.
It was assigned to Rhynchonellida by Sepkoski (2002); and to Acanthorhynchiinae by Williams et al. (2002).
It was assigned to Rhynchonellida by Sepkoski (2002); and to Acanthorhynchiinae by Williams et al. (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1973 | Acanthothyropsis Kamyshan p. 64 |
| 2002 | Acanthothyropsis Sepkoski |
| 2002 | Acanthothyropsis Williams et al. p. 1308 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Acanthothyropsis Kamyshan 1973
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†Acanthothyropsis costulata Kamyshan 1973
†Acanthothyropsis crossi Walker 1869
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 8.00 | 6.20 | 9.70 | 8.50 | 1.78 |
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Concavum to the top of the Early/Lower Bajocian or 175.60000 to 168.40000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Concavum | Georgia | A. costulata (162835) | |
| Concavum | Russian Federation | A. costulata (162839 162870 162871 162872) | |
| Early/Lower Bajocian | Russian Federation | A. crossi (162860) | |
| Discites | Russian Federation | A. crossi (162845 162873 162874 162875) |