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Borissiakoceras inconstans
Taxonomy
Borissiakoceras inconstans was named by Cobban and Gryc (1961). Its type specimen is USNM 130798, a shell, and it is a 3D body fossil. Its type locality is USGS Mesozoic 26545, Nanushuk River, which is in a Turonian coastal shale in the Seabee Formation of Alaska.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1961 | Borissiakoceras inconstans Cobban and Gryc p. 187 figs. Pl 38, figs 30-37; text-figs 2i,l |
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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.
†Borissiakoceras inconstans Cobban and Gryc 1961
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Turonian or 93.90000 to 89.80000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Turonian | USA (Alaska) | Borissiakoceras inconstans (type locality: 226970) | |
| Turonian | Russian Federation | Borissiakoceras inconstans (215821) |