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Aristoceras appressum
Taxonomy
Aristoceras appressum was named by Ruzhentsev (1950). Its type specimen is PIN 320/1170, a shell, and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1950 | Aristoceras appressum Ruzhentsev p. 102 figs. Pl 5, figs 8-12; text-fig 35b, 36 |
| 2002 | Aristoceras appressum Leonova |
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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.
†Aristoceras appressum Ruzhentsev 1950
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 7.72 | 5.00 | 10.0 | 9.20 | 2.69 | |
| shell diameter | 3 | 12.5 | 8.20 | 16.0 | 14.8 | 4.20 | |
| shell inflation | 3 | 0.001 | 0.001 | 0.001 | 0.001 | - |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gzhelian | Russian Federation | Aristoceras appressum (172256 172261 172264 172265 172270) | |
| Gzhelian | Kazakhstan | Aristoceras appressum (172278 172279 172281) | |
| Sakmarian | USA (Texas) | Aristoceras appressum (106156) |