| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Selwynoceras mexicanum
Taxonomy
Prionotropis mexicana was named by Bose (1927).
It was recombined as Selwynoceras mexicanum by Powell (1963).
It was recombined as Selwynoceras mexicanum by Powell (1963).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1927 | Prionotropis mexicana Bose p. 262 figs. Pl 11, figs 11,12 |
| 1931 | Pseudaspidoceras chispaense Adkins p. 51 figs. Pl 3, figs 1,2 |
| 1963 | Selwynoceras mexicanum Powell p. 1225 figs. Pl 166, figs 2-7; pl 167, fgs 1,3-8; pl 168, fig 4; text-figs 2a-e,3a-h,4a-g |
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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.
†Selwynoceras mexicanum Bose 1927
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Invalid names: Pseudaspidoceras chispaense Adkins 1931 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 30.0 | 16.7 | 53.8 | 35.2 | 26.2 | |
| shell diameter | 2 | 75.0 | 45.0 | 125.0 | 85.0 | 56.6 | |
| shell inflation | 2 | 26.5 | 17.6 | 40.0 | 28.8 | 15.8 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Middle Turonian or 93.90000 to 89.80000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Turonian | Mexico (Chihuahua) | Selwynoceras mexicanum (38965) |