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Alzadites
Taxonomy
Alzadites was named by Kennedy and Cobban (1990). Its type is Alzadites alzadensis.
It was assigned to Acanthoceratinae by Kennedy and Cobban (1990) and Wright et al. (1996).
It was assigned to Acanthoceratinae by Kennedy and Cobban (1990) and Wright et al. (1996).
Species
Synonymy list
Year | Name and author |
---|---|
1990 | Alzadites Kennedy and Cobban p. 396 |
1996 | Alzadites Wright et al. p. 159 |
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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. †Alzadites Kennedy and Cobban 1990
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†Alzadites alzadensis Kennedy and Cobban 1990
†Alzadites incomptus Kennedy and Cobban 1990
†Alzadites westonensis Kennedy and Cobban 1990
Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 4 | 7.91 | 6.70 | 9.50 | 7.85 | 1.21 | |
shell diameter | 4 | 15.4 | 13.4 | 16.6 | 15.8 | 1.40 | |
shell inflation | 4 | 2.23 | 1.70 | 2.90 | 2.25 | 0.506 |
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Source: o = order, c = class | |||||
References: Kiessling 2004, Kiessling 2003 |
Age range: Late/Upper Cenomanian or 99.60000 to 93.50000 Ma
Collections (8 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Late/Upper Cenomanian | USA (New Mexico) | A. incomptus (175425) A. sp. (230784) A. sp. A (175429) | |
Late/Upper Cenomanian | USA (Utah) | A. incomptus (175427 175428) | |
Late/Upper Cenomanian | USA (Arizona) | A. incomptus (54165) | |
Late/Upper Cenomanian | USA (Wyoming) | A. sp., A. westonensis (167809) | |
Middle Cenomanian | USA (Montana) | A. alzadensis (175422) |