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Tropitoides
Taxonomy
Tropitoides was named by Spath (1925) [Sepkoski's age data: K Turo-l K Turo-u]. Its type is Ammonites obesus.
It was assigned to Forbesiceratinae by Wright (1952); to Haplocerataceae by Wright et al. (1996); and to Ammonoidea by Sepkoski (2002).
It was assigned to Forbesiceratinae by Wright (1952); to Haplocerataceae by Wright et al. (1996); and to Ammonoidea by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1925 | Tropitoides Spath p. 102 |
| 1952 | Tropitoides Wright |
| 1996 | Tropitoides Wright et al. p. 17 fig. 10,4a–c |
| 2002 | Tropitoides 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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Wright et al. 1996 | Involute, highwhorled, with slightly convex sides sloping towards rather narrow venter bearing prominent, slightly rounded keel; close, rather flat, falcoid ribs ending in feeble ventrolateral clavi. [Suture with second lateral saddle projecting beyond other elements and the minute umbilicus recall Aconeceratinae but other features and stratigraphical horizon render connection unlikely.] |