PBDB Taxon

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Periptychus

Mammalia - Periptychidae

Taxonomy

Periptychus was named by Cope (1881). It is the type genus of Periptychidae, Periptychinae.

It was assigned to Amblyctonidae by Cope (1881) and Cope (1881); to Periptychidae by Carroll (1988); and to Periptychinae by Hay (1902), Archibald (1998), Eberle (2003) and Halliday et al. (2017).

Species

Carsioptychus hamaxitus, P. carinidens (syn. Eohyus robustus, P. superstes, P. gilmorei, Catathlaeus rhabdodon), P. coarctatus (syn. P. hamaxitus, Plagioptychus matthewi, P. matthewi, P. brabensis)

Synonyms

Plagioptychus was named by Matthew (1936) [preoccupied; in Simpson 1936b].

It was synonymized subjectively with Carsioptychus by Simpson (1936); it was synonymized subjectively with Periptychus by Matthew (1937), Van Valen (1978), Williamson and Lucas (1993) and Williamson (1996).

It was assigned to Hippuritoida by Matthew (1936) and Sepkoski (2002).
Carsioptychus was named by Simpson (1936). It is not extant.

It was synonymized subjectively with Periptychus by Van Valen (1978), Robison (1986), Williamson and Lucas (1993) and Williamson (1996).

It was assigned to Periptychinae by Archibald (1998); and to Periptychidae by Simpson (1936), Archibald et al. (1987), Carroll (1988) and Cifelli et al. (1999).
Catathlaeus was named by Cope (1881).

It was synonymized subjectively with Periptychus by Cope (1882), Cope (1884), Hay (1902), Simpson (1937), Matthew (1937), Simpson (1959), Lucas (1980), Rigby (1980), Taylor (1981), Tomida (1981), Williamson and Lucas (1993) and Williamson (1996).

It was assigned to Mammalia by Cope (1881).

Synonymy list

Year	Name and author
1881	Periptychus Cope p. 337
1881	Catathlaeus Cope p. 487
1902	Periptychus Hay p. 693
1936	Plagioptychus Matthew
1936	Carsioptychus Simpson
1987	Carsioptychus Archibald et al.
1988	Carsioptychus Carroll
1988	Periptychus Carroll
1998	Carsioptychus Archibald
1998	Periptychus Archibald p. 312
1999	Carsioptychus Cifelli et al.
2002	Plagioptychus Sepkoski
2003	Periptychus Eberle p. 159
2017	Periptychus Halliday et al. p. 525

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()

Rank	Name	Author
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Theriamorpha	(Rowe 1993)
—	Theriiformes	()
—	Trechnotheria
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Bulbulodentata
family	Periptychidae	Cope 1882
subfamily	Periptychinae	Osborn and Earle 1895
genus	Periptychus

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. †Periptychus Cope 1881

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†Periptychus carinidens Cope 1881

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Invalid names: Catathlaeus rhabdodon Cope 1881 [synonym], Eohyus robustus Marsh 1894 [synonym], Periptychus gilmorei Gazin 1938 [synonym], Periptychus superstes Matthew 1935 [synonym]

†Periptychus coarctatus Cope 1883

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Invalid names: Periptychus brabensis Cope 1888 [synonym], Periptychus hamaxitus Gazin 1941 [synonym], Periptychus matthewi Simpson 1936 [synonym], Plagioptychus matthewi Simpson 1936 [synonym]

Invalid names: Carsioptychus Simpson 1936 [synonym], Catathlaeus Cope 1881 [synonym], Plagioptychus Matthew 1936 [synonym]

Diagnosis

No diagnoses are available