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Pseudoskirroceras
Taxonomy
Pseudoskirroceras was named by Wiedenmayer (1980).
It was assigned to Eoderoceratidae by Smith and Tipper (1996); and to Coeloceratidae by Hillebrandt (2006), Sarih et al. (2007) and Howarth (2013).
It was assigned to Eoderoceratidae by Smith and Tipper (1996); and to Coeloceratidae by Hillebrandt (2006), Sarih et al. (2007) and Howarth (2013).
Synonymy list
| Year | Name and author |
|---|---|
| 1980 | Pseudoskirroceras Wiedenmayer |
| 1996 | Pseudoskirroceras Smith and Tipper |
| 2006 | Pseudoskirroceras Hillebrandt p. 75 |
| 2007 | Pseudoskirroceras Sarih et al. p. 96 |
| 2013 | Pseudoskirroceras Howarth p. 45 |
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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. †Pseudoskirroceras Wiedenmayer 1980
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†Pseudoskirroceras imlayi Smith and Tipper 1988
†Pseudoskirroceras laticostatum Hillebrandt 2006
†Pseudoskirroceras mastodon Fucini 1935
†Pseudoskirroceras stephaniforme Hillebrandt 2006
†Pseudoskirroceras varisculptum Hillebrandt 2006
†Pseudoskirroceras wiedenmayeri Hillebrandt 1981
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 4 | 25.7 | 20.0 | 29.0 | 27.5 | 4.07 | |
| shell diameter | 4 | 76.1 | 67.0 | 88.0 | 75.4 | 8.80 | |
| shell inflation | 4 | 31.9 | 26.7 | 39.5 | 31.4 | 5.32 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Imlayi or 189.60000 to 186.70000 Ma
Collections (32 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Jurassic | Canada (British Columbia) | P. sp. (199611) | |
| Pliensbachian | Canada (British Columbia) | P. imlayi (33131 33189 33214) | |
| Imlayi | Canada (British Columbia) | P. imlayi (32800 32804 32828 33126 33128 33168 33169 33170 33171 33181 33185 33190) | |
| Early/Lower Pliensbachian | Canada (British Columbia) | P. sp. (198419) | |
| Early/Lower Pliensbachian | Mexico (Sonora) | P. imlayi (208279 208281) | |
| Early/Lower Pliensbachian | Morocco | P. sp. (206634) | |
| Jamesoni | Morocco | P. mastodon (197655 197690 197993 197997) | |
| Jamesoni | Chile | P. laticostatum (181816 181862) P. wiedenmayeri (181861) | |
| Jamesoni | Canada (British Columbia) | P. imlayi (32802) | |
| Jamesoni - Ibex | Chile | P. stephaniforme (181815 181818) P. varisculptum (181820 181863) |