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Spiroxybeloceras
Taxonomy
Spiroxybeloceras was named by Kennedy and Cobban (1999). Its type is Ptychoceras meekanum.
It was assigned to Polyptychoceratinae by Kennedy et al. (2000); and to Ammonoidea by Jagt and Neumann (2006).
It was assigned to Polyptychoceratinae by Kennedy et al. (2000); and to Ammonoidea by Jagt and Neumann (2006).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1999 | Spiroxybeloceras Kennedy and Cobban |
| 2000 | Spiroxybeloceras Kennedy et al. p. 69 |
| 2006 | Spiroxybeloceras Jagt and Neumann p. 572 |
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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.
G. †Spiroxybeloceras Kennedy and Cobban 1999
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†Spiroxybeloceras meekanum Whitfield 1877
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Late/Upper Campanian or 83.50000 to 70.60000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian | Germany (Niedersachsen) | S. grande (31993) | |
| Late/Upper Campanian | USA (Colorado) | S. meekanum (88474) | |
| Late/Upper Campanian | USA (Delaware) | Oxybeloceras meekanum (83133) |