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Crassiceras
Taxonomy
Crassiceras is a genus. It is not extant.
It was assigned to Ammonoidea by Sepkoski (2002); and to Phymatoceratidae by Howarth (2013).
It was assigned to Ammonoidea by Sepkoski (2002); and to Phymatoceratidae by Howarth (2013).
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. †Crassiceras
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†Crassiceras canavarii Franceschi 1921
†Crassiceras dimorphum Merla 1932
†Crassiceras gradatum Merla 1932
†Crassiceras latum Merla 1932
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell diameter | 1 | 45.7 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Bifrons to the top of the Late/Upper Toarcian or 182.00000 to 175.60000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bifrons | Italy | C. sp. (147043) | |
| Middle Toarcian - Late/Upper Toarcian | Morocco (Taza-Al Hoceima-Taounate) | C. latum, C. gradatum (234054) | |
| Variabilis | Hungary | C. canavarii (108470) C. dimorphum (108082) C. dimorphum, C. canavarii (107911) C. latum (108081) |