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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Stehnocephalites
Taxonomy
Stehnocephalites is a genus. It is not extant. Its type is Indocephalites gerthi.
It was assigned to Eurycephalitinae by Parent (1998); and to Ammonoidea by Sepkoski (2002).
It was assigned to Eurycephalitinae by Parent (1998); and to Ammonoidea by Sepkoski (2002).
Species
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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. †Stehnocephalites
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†Stehnocephalites crassicostatus Riccardi and Westermann 1991
†Stehnocephalites gerthi Spath 1928
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 6 | 29.1 | 18.0 | 45.8 | 28.4 | 9.17 | |
| shell diameter | 6 | 69.4 | 40.0 | 106.9 | 72.1 | 22.7 | |
| shell inflation | 6 | 18.1 | 9.00 | 28.9 | 18.4 | 7.04 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Late/Upper Bathonian to the top of the Early/Lower Callovian or 167.70000 to 161.20000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Bathonian | Argentina (Neuquen) | S. gerthi (158971 158972 158975 158977 158978 158979 158981) S. gerthi, S. crassicostatus (158973 158976) | |
| Early/Lower Callovian | Argentina (Neuquen) | S. crassicostatus (158982) | |
| Early/Lower Callovian | Argentina (Nequen) | S. gerthi (4883) |