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Polyptychoceras (Subptychoceras)
Taxonomy
Subptychoceras was named by Shimizu (1935).
It was reranked as Polyptychoceras (Subptychoceras) by Wright et al. (1996).
It was assigned to Ammonoidea by Shimizu (1935); and to Polyptychoceras by Wright et al. (1996).
It was reranked as Polyptychoceras (Subptychoceras) by Wright et al. (1996).
It was assigned to Ammonoidea by Shimizu (1935); and to Polyptychoceras by Wright et al. (1996).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Subptychoceras Shimizu |
| 1996 | Polyptychoceras (Subptychoceras) Wright et al. p. 253 |
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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. †Polyptychoceras (Subptychoceras) Shimizu 1935
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Diagnosis
No diagnoses are available