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Simbirskites (Speetoniceras)
Taxonomy
Speetoniceras was named by Spath (1924) [Sepkoski's age data: K Haut-l].
It was reranked as Simbirskites (Speetoniceras) by Wright et al. (1996).
It was assigned to Simbirskites by Wright et al. (1996); and to Ammonoidea by Imlay (1960) and Sepkoski (2002).
It was reranked as Simbirskites (Speetoniceras) by Wright et al. (1996).
It was assigned to Simbirskites by Wright et al. (1996); and to Ammonoidea by Imlay (1960) and Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1924 | Speetoniceras Spath |
1960 | Speetoniceras Imlay p. 213 |
1996 | Simbirskites (Speetoniceras) Wright et al. p. 38 |
2002 | Speetoniceras Sepkoski |
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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.
Subg. †Simbirskites (Speetoniceras) Spath 1924
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†Speetoniceras agnessense Imlay 1960
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class | |||||
References: Kiessling 2003, Kiessling 2004 |
Age range: base of the Hauterivian to the top of the Late/Upper Hauterivian or 132.90000 to 130.00000 Ma
Collections (4 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Early/Lower Hauterivian | Greenland | Simbirskites sp. (83688) | |
Late/Upper Hauterivian | Russian Federation (Ulyanovsk) | Speetoniceras sp. (214819) | |
Hauterivian | Russian Federation | Speetoniceras sp. (2521) | |
Hauterivian | Georgia | Speetoniceras versicolor, Speetoniceras inversum (2114) |