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Cadoceras septentrionale
Taxonomy
Cadoceras septentrionale was named by Frebold (1964). Its type specimen is GSC 17651, a shell, and it is a 3D body fossil. Its type locality is GSC 43619, Strand Fiord, Axel Heiberg Island, which is in a Callovian marine siliciclastic in the McConnell Island Formation of Canada.
Subspecies
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1964 | Cadoceras septentrionale Frebold p. 6 figs. Pl 4, fig 3; pl 5, figs 1a-2b; pl 6, figs 1a-3b |
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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 septentrionale Frebold 1964
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†Cadoceras septentrionale latidorsata Frebold 1964
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Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 7 | 32.6 | 8.00 | 66.0 | 39.0 | 18.2 | |
shell diameter | 7 | 71.9 | 19.0 | 136.0 | 82.0 | 38.2 | |
shell inflation | 7 | 17.6 | 4.00 | 43.0 | 21.0 | 13.1 |
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Source: o = order, c = class | |||||
References: Kiessling 2004, Kiessling 2003 |
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 |
---|---|---|---|
Early/Lower Callovian | Canada (Nunavut) | Cadoceras septentrionale, Cadoceras septentrionale (type locality: 236662) | |
Early/Lower Callovian | Canada (Northwest Territories) | Cadoceras septentrionale (236663) |