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Ptychophylloceras
Taxonomy
Ptychophylloceras was named by Spath (1927) [Sepkoski's age data: J Toar-u J Tith]. Its type is Phylloceras feddeni.
It was assigned to Phylloceratidae by Avram and Gradinaru (1993) and Zeiss et al. (1994); to Calliphylloceratinae by Wright et al. (1996) and Arkadiev et al. (2000); to Phylloceratitida by Sepkoski (2002); to Ptychophylloceratinae by Reboulet (1996), Lukeneder (2004), Murphy and Rodda (2006), Grigore (2011), Grigore (2013) and Sato and Yamada (2014); and to Phylloceratinae by Pallini et al. (2004) and Majidifard (2015).
It was assigned to Phylloceratidae by Avram and Gradinaru (1993) and Zeiss et al. (1994); to Calliphylloceratinae by Wright et al. (1996) and Arkadiev et al. (2000); to Phylloceratitida by Sepkoski (2002); to Ptychophylloceratinae by Reboulet (1996), Lukeneder (2004), Murphy and Rodda (2006), Grigore (2011), Grigore (2013) and Sato and Yamada (2014); and to Phylloceratinae by Pallini et al. (2004) and Majidifard (2015).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1927 | Ptychophylloceras Spath |
| 1993 | Ptychophylloceras Avram and Gradinaru p. 671 |
| 1994 | Ptychophylloceras Zeiss et al. p. 370 |
| 1996 | Ptychophylloceras Reboulet p. 188 |
| 1996 | Ptychophylloceras Wright et al. p. 2 |
| 2000 | Ptychophylloceras Arkadiev et al. p. 97 |
| 2002 | Ptychophylloceras Sepkoski |
| 2004 | Ptychophylloceras Lukeneder p. 49 |
| 2004 | Ptychophylloceras Pallini et al. p. 5 |
| 2006 | Ptychophylloceras Murphy and Rodda p. 45 |
| 2011 | Ptychophylloceras Grigore p. 198 |
| 2013 | Ptychophylloceras Grigore p. 90 |
| 2014 | Ptychophylloceras Sato and Yamada p. 28 |
| 2015 | Ptychophylloceras Majidifard p. 27 |
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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. †Ptychophylloceras Spath 1927
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†Ptychophylloceras chonomphalum Vacek 1886
†Ptychophylloceras diphyllum d'Orbigny 1841
†Ptychophylloceras euphyllum Neumayr 1871
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Invalid names: Ammonites hommairei d'Orbigny 1848 [replaced]
†Ptychophylloceras feddeni Waagen 1875
†Ptychophylloceras flabellatum Neumayr 1871
†Ptychophylloceras lardyi Oooster 1860
†Ptychophylloceras plasticum Burckhardt 1927
†Ptychophylloceras popenoei Murphy and Rodda 2006
†Ptychophylloceras ptychoicum Quenstedt 1845
†Ptychophylloceras saintoursi Collignon 1958
†Ptychophylloceras tatricum Pusch 1837
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. A. Murphy and P. U. Rodda 2006 | As for the subfamily. [A subfamily of Phylloceratidae with smooth or faintly ribbed, moderately inflated shells with periodic partial collars on the periphery of the shell and periodic periumbilical constrictions; suture with diphyllic main saddles.] |