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Cadoceras arcticum
Taxonomy
Cadoceras arcticum was named by Frebold (1964). Its type specimen is GSC 15127, a shell, and it is a 3D body fossil. Its type locality is GSC 25980, Cornwall Island, which is in a Callovian marine siliciclastic in the Hiccles Cove Formation of Canada.
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1964 | Cadoceras arcticum Frebold p. 12 figs. Pl 12, fig 1; pl 13, fig 1; pl 17, fig 2; pl 20, fig 2 |
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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.
†Cadoceras arcticum Frebold 1964
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Diagnosis
No diagnoses are available
Measurements
part | N | mean | |||||
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shell height | 1 | 54.0 | |||||
shell diameter | 1 | 119.0 | |||||
shell inflation | 1 | 25.0 |
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Source: o = order, c = class | |||||
References: Kiessling 2003, Kiessling 2004 |
Age range: Early/Lower Callovian or 164.70000 to 161.20000 Ma
Collections (2 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Early/Lower Callovian | Canada (Yukon) | Cadoceras arcticum (236667) | |
Early/Lower Callovian | Canada (Nunavut) | Cadoceras arcticum (type locality: 236666) |