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Pelycosauria (pelycosaur)


Pelycosauria was named by Cope (1878).

It was synonymized subjectively with Theriodontia by Zittel (1890); it was synonymized subjectively with Theriodontia by Gadow (1898) and Perrier (1928); it was synonymized subjectively with Naosauri by Jaekel (1911); it was reranked as the superorder Pelycosauria by Nopcsa (1928); it was replaced with Sphenacodontiformes by Hay (1930); it was reranked as the suborder Pelycosauria by Swinton (1934) and Kuhn (1946); it was reranked as the subclass Pelycosauria by Langston (1965).

It was assigned to Diaptosauria by Osborn (1903) and Osborn (1904); to Rhynchocephalia by Cope (1878), Osborn (1903) and Case (1907); to Monozygocrotapha by Nopcsa (1928); to Theromorpha by Baur (1887) and Roxo (1937); to Theromorpha by Swinton (1934) and Kuhn (1946); to Theromorphoidea by Huene (1954); to Captorhina by Olson and Barghusen (1962); to Synapsida by Olson and Beerbower (1953) and Olson (1962); to Theromorpha by Kuhn (1966); to Reptilia by Hay (1902), Nopcsa (1923), Langston (1965), Berman (1977) and Eberth and Brinkman (1983); and to Synapsida by Romer and Price (1940), Haughton and Brink (1954), Lewis and Vaughn (1965), Olson (1966), Haubold (1971), Daly (1973), Haubold (1974), Currie (1977), Langston and Reisz (1981) and Carroll (1988).

Synonymy list
YearName and author
1878Pelycosauria Cope p. 528
1887Pelycosauria Baur p. 102
1902Pelycosauria Hay p. 430
1903Pelycosauria Osborn p. 276
1904Pelycosauria Osborn p. 110
1907Pelycosauria Case p. 17
1923Pelycosauria Nopcsa
1928Pelycosauria Nopcsa p. 171
1934Pelycosauria Swinton p. 52
1937Pelycosauria Roxo p. 43
1940Pelycosauria Romer and Price p. 14
1946Pelycosauria Kuhn p. 56
1953Pelycosauria Olson and Beerbower p. 399
1954Pelycosauria Haughton and Brink p. 5
1954Pelycosauria Huene p. 27
1962Pelycosauria Olson p. 95
1962Pelycosauria Olson and Barghusen p. 21
1965Pelycosauria Langston p. 6
1965Pelycosauria Lewis and Vaughn p. C26
1966Pelycosauria Kuhn p. 118
1966Pelycosauria Olson p. 301
1971Pelycosauria Haubold p. 32
1973Pelycosauria Daly p. 587
1974Pelycosauria Haubold p. 34
1977Pelycosauria Berman p. 108
1977Pelycosauria Currie p. 929
1981Pelycosauria Langston and Reisz p. 74
1983Pelycosauria Eberth and Brinkman p. 2
1988Pelycosauria Carroll

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EubilateriaAx 1987
phylumChordataHaeckel 1874
subclassDipnotetrapodomorpha(Nelson 2006)
subclassAmphibiosauriaKuhn 1967

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.

Or. †Pelycosauria Cope 1878 [pelycosaur]
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G. †Echinerpeton Reisz 1972
Subor. †Edaphosauria Cope 1882
Invalid names: Glaucosauridae Huene 1925 [empty], Lupeosauridae Romer and Price 1940 [empty], Nitosauridae Romer and Price 1940 [empty]
G. †Lupeosaurus Romer 1936
Lupeosaurus kayi Romer 1937
G. †Milosaurus DeMar 1970
Milosaurus mccordi DeMar 1970
G. †Nitosaurus Romer 1937
Nitosaurus jacksonorum Romer 1937
Subor. †Ophiacodontia Romer and Price 1940
Invalid names: Tetraceratopsidae Kuhn 1964 [empty], Varanopoidea Romer and Price 1940 [empty]
G. †Protoclepsydrops Carroll 1964
Protoclepsydrops haplous Carroll 1964
G. †Xyrospondylus Reisz et al. 1982
Xyrospondylus ecordi Peabody 1957
Invalid names: Caseamorpha Kemp 1982 [empty]
H. F. Osborn 1903Raptorial, carnivorous ambulatory Diaptosauria. Skull progressively compressed, dorsal spines elongated, rail abbreviated. Vertebrae perforated by notochord, amphicoelous. Ribs two-headed; capitula
mainly hypocentral in attachment. Interclavicle T-shaped. Coracoid and procoracoid (in certain forms) separated by suture. A puboischiadic fenestra between pubis and ischium (Case). Humerus with entepicondylar (ulnocondylar) foramen.
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialuc
Locomotion: actively mobilec
Created: 2017-04-17 15:15:35
Modified: 2017-04-17 15:15:35
Source: c = class, subp = subphylum, uc = unranked clade
References: Carroll 1988, Hendy et al. 2009

Age range: base of the Westphalian A to the top of the Kungurian or 318.70000 to 272.30000 Ma

Collections (13 total)

Time interval Ma Country or state Original ID and collection number
Westphalian A318.7 - 316.9Canada (Nova Scotia) Protoclepsydrops haplous (28069)
Westphalian C - Westphalian D314.6 - 307.5Canada (Nova Scotia) Echinerpeton intermedium (80111)
Westphalian D309.8 - 307.5USA (Ohio) Pelycosauria indet. (85292)
Stephanian - Virgilian307.5 - 298.9USA (Illinois) Milosaurus mccordi (81114)
Missourian306.0 - 303.7USA (Kansas) Edaphosaurus ecordi, Xyrospondylus ecordi (80784)
Virgilian303.7 - 298.9USA (New Mexico) Nitosaurus jacksonorum (34761)
Asselian298.9 - 295.5USA (Texas) Lupeosaurus kayi (79163)
Wolfcampian298.9 - 286.0USA (Colorado) Pelycosauria indet. (85476) Pelycosauria indet., Ophiacodontia indet. (85482) Pelycosauria sp. (85477 85479 85480)
Kungurian279.3 - 272.3USA (Texas) Pelycosauria indet. (207420)