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Phylloceras (Geyeroceras)
Taxonomy
Geyeroceras was named by Hyatt (1900) [Sepkoski's age data: J Sine-l J Plie].
It was reranked as Phylloceras (Geyeroceras) by Kennedy and Klinger (1977).
It was assigned to Phylloceras by Kennedy and Klinger (1977); and to Phylloceratitida by Sepkoski (2002).
It was reranked as Phylloceras (Geyeroceras) by Kennedy and Klinger (1977).
It was assigned to Phylloceras by Kennedy and Klinger (1977); and to Phylloceratitida by Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1900 | Geyeroceras Hyatt |
| 1977 | Phylloceras (Geyeroceras) Kennedy and Klinger p. 352 |
| 2002 | Geyeroceras 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. †Phylloceras (Geyeroceras) Hyatt 1900
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†Geyeroceras cylindricum Sowerby 1833
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Invalid names: Phylloceras bielzii Herbich 1878 [synonym], Phylloceras szadeczkyi Vadász 1908 [synonym]
†Geyeroceras leptophyllum Hauer 1866
†Geyeroceras subcylindricum Neumayr 1879
Diagnosis
No diagnoses are available