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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Pseudocadoceras crassicostatum
Taxonomy
Pseudocadoceras crassicostatum was named by Imlay (1953). Its type specimen is USNM 108118, a shell, and it is a 3D body fossil. Its type locality is USGS Mesozoic 12387, Puale Bay, which is in a Callovian marine siliciclastic in the Shelikof Formation of Alaska.
Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Pseudocadoceras crassicostatum Imlay p. 94 figs. Pl 49, figs 19,20,22-24 |
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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.
†Pseudocadoceras crassicostatum Imlay 1953
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 16.4 | 15.0 | 18.0 | 16.5 | 2.12 | |
| shell diameter | 2 | 36.8 | 33.0 | 41.0 | 37.0 | 5.66 | |
| shell inflation | 2 | 10.3 | 8.50 | 12.5 | 10.5 | 2.83 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Callovian or 166.10000 to 163.50000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Callovian | USA (Alaska) | Pseudocadoceras crassicostatum (158923 158926 type locality: 158933) | |
| Callovian - Early/Lower Kimmeridgian | USA (California) | Pseudocadoceras crassicostatum (192818) |