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Rhamphidoceras
Taxonomy
Rhamphidoceras was named by Kennedy and Cobban (1990) [Sepkoski's age data: K Turo-l]. Its type is Rhamphidoceras saxatilis.
It was assigned to Mammitidae by Kennedy and Cobban (1990); and to Mammitinae by Wright et al. (1996) and Wright (1996).
It was assigned to Mammitidae by Kennedy and Cobban (1990); and to Mammitinae by Wright et al. (1996) and Wright (1996).
Species
R. saxatilis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Rhamphidoceras Kennedy and Cobban p. 667 |
| 1996 | Rhamphidoceras Wright |
| 1996 | Rhamphidoceras Wright et al. p. 175 |
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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. †Rhamphidoceras Kennedy and Cobban 1990
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†Rhamphidoceras saxatilis Kennedy and Cobban 1990
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Wright et al. 1996 | Progenetic dwarf offshoot, probably of Mammites. Differs from Mitonia by larger ribs and absence of ventral tubercles |