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Anagymnotoceras varium
Taxonomy
Gymnotoceras varium was named by McLearn (1948). Its type specimen is GSC 9595 and is a 3D body fossil. Its type locality is GSC 10696, Alaska Highway, which is in a Bithynian marine siliciclastic in the Toad Formation of Canada.
It was recombined as Anagymnotoceras varium by McLearn (1969), Tozer (1994).
It was recombined as Anagymnotoceras varium by McLearn (1969), Tozer (1994).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1948 | Gymnotoceras helle McLearn p. 32 figs. Pl 10, fig 7 |
| 1948 | Gymnotoceras varium McLearn p. 33 figs. Pl 11, figs 5,6 |
| 1969 | Anagymnotoceras varium McLearn p. 18 figs. Pl 3, figs 7a-c; text-fig 6 |
| 1969 | Anagymnotoceras helle McLearn p. 21 figs. Pl 3, figs 4a-c,5; text-fig 7 |
| 1991 | Anagymnotoceras helle Konstantinov p. 44 figs. Pl 9, fig 1; text-fig 21 |
| 1994 | Anagymnotoceras varium Tozer p. 114 figs. Pl 53, figs 1,2; pl 54, figs 7a,b |
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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.
†Anagymnotoceras varium McLearn 1948
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Invalid names: Gymnotoceras helle McLearn 1948 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 4 | 19.8 | 14.4 | 30.1 | 17.8 | 8.26 | |
| shell diameter | 4 | 41.2 | 27.0 | 70.0 | 39.5 | 18.8 | |
| shell inflation | 4 | 15.9 | 11.6 | 22.4 | 15.6 | 5.46 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bithynian | Canada (British Columbia) | Anagymnotoceras varium (137096 139031 139051 139059 141640 141649) Gymnotoceras helle (137068) Gymnotoceras varium, Gymnotoceras helle (type locality: 137067) | |
| Bithynian - Pelsonian | Svalbard and Jan Mayen | Anagymnotoceras varium (97306) | |
| Pelsonian | Svalbard and Jan Mayen (Spitsbergen) | Anagymnotoceras varium (211376) | |
| Pelsonian | Russian Federation | Anagymnotoceras helle (151176) |