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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Choristoceras crickmayi
Taxonomy
Choristoceras crickmayi was named by Tozer (1979). Its type specimen is GSC 18912 and is a 3D body fossil. Its type locality is GSC 56395, Tyaughton Creek, which is in a Rhaetian marine sandstone/conglomerate in Canada.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Choristoceras crickmayi Tozer p. 134 figs. Pl 16.1, figs 4-6 |
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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.
†Choristoceras crickmayi Tozer 1979
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell diameter | 3 | 23.3 | 18.8 | 33.4 | 20.2 | 8.06 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Rhaetian or 205.70000 to 201.40000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rhaetian | Canada (British Columbia) | Choristoceras crickmayi (137062 type locality: 137962 137967) | |
| Rhaetian | USA (Nevada) | Choristoceras crickmayi (76608 76610) |