Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections


Synonymy list
YearName and author
1880Cotylosauria Cope p. 304
1903Cotylosauria Osborn p. 276
1904Cotylosauria Osborn p. 99
1913Cotylosauria Broom
1934Cotylosauria Swinton p. 52
1937Cotylosauria Roxo p. 42
1946Cotylosauria Kuhn p. 55
1950Cotylosauria Stovall p. 46
1954Cotylosauria Haughton and Brink p. 3
1956Cotylosauria Romer p. 476
1965Cotylosauria Lewis and Vaughn p. C12
1966Cotylosauria Kuhn p. 12
1967Cotylosauria Carroll p. 1256
1969Cotylosauria Carroll p. 152
1973Cotylosauria Daly p. 584
1975Cotylosauria Colbert and Kitching p. 3
1977Cotylosauria Gow p. 110
1979Cotylosauria Heaton p. 11
1983Cotylosauria Lavina p. 53
1988Cotylosauria Gauthier et al. p. 139 fig. 4.4
1995Cotylosauria Laurin and Reisz p. 173 fig. 2

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phylumChordataHaeckel 1847
subclassDipnotetrapodomorpha(Nelson 2006)

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.

No diagnoses are available
No measurements are available
Composition: phosphaticsubp
Maximum body mass: 100000 kgg
Minimum body mass: 3 gg
Environment: brackish, freshwater, terrestrialsubp
Locomotion: actively mobilec
Created: 2017-04-17 15:15:19
Modified: 2017-04-17 15:15:19
Source: g = genus, c = class, subp = subphylum
References: Holman 2000, Legendre 1988, Kiessling 2004, Peczkis 1995, Hopson 1973, Carroll 1988, Hendy et al. 2009

Age range

Maximum range based only on fossils: base of the Mississippian to the top of the Holocene or 358.90000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 323.2 Ma

Collections (36683 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Mississippian358.9 - 323.2USA (Virginia) Dromopus aduncus (104796)
Pennsylvanian323.2 - 298.9USA (Massachusetts) Dromopus woodworthi (34780)
Pennsylvanian323.2 - 298.9USA (Georgia) Cincosaurus cobbi (150407)
Westphalian A318.1 - 314.6Canada (Nova Scotia) Hylonomus latidens, Protoclepsydrops haplous, Hylonomus lyelli, Hylerpeton curtidentatum, Hylonomus wymani (28069) Hylonomus lyelli (86946)
Westphalian318.1 - 306.95USA (Alabama) Cincosaurus cobbi, Cincosaurus jaggerensis, Cincosaurus jonesii, Cincosaurus fisheri (84135) Notalacerta missouriensis, Cincosaurus cobbi (81525)
Westphalian C - Westphalian D314.6 - 306.95Canada (Nova Scotia) Clepsydrops sp., Limnostygis relictus, Archaeothyris florensis, Echinerpeton intermedium, Paleothyris acadiana (80111)
Westphalian D311.45 - 306.95USA (Ohio) Archaeothyris sp., Sauropleura longipes, Pelycosauria indet. (85292)
Westphalian D311.45 - 306.95USA (Illinois) Cephalerpeton ventriarmatum (79598)
Westphalian D311.45 - 306.95Czech Republic (Pilsen) Archaeothyris sp., Amniota indet., Brouffia orientalis, Coelostegus prothales, Hylonomus acuminatus (84835)
Stephanian306.95 - 298.9France (Bourgogne) Stereorhachis dominans (80716)
Missourian305.9 - 303.4USA (Colorado) Ianthasaurus sp., Limnoscelis dynatis, Desmatodon hesperis (180938) Limnoscelis dynatis (77786)
Missourian305.9 - 303.4USA (Illinois) Reptilia indet., Clepsydrops sp., Archaeobelus vellicatus, Clepsydrops collettii, Clepsydrops vinslovii, Clepsydrops pedunculatus, Captorhinus illinoisensis (80714)
Missourian305.9 - 303.4USA (Kansas) Amniota indet., Haptodus garnettensis, Ianthasaurus hardestii, Edaphosaurus ecordi, Xyrospondylus ecordi, Petrolacosaurus kansensis, Podargosaurus hibbardi, Ianthodon schultzei, Kenomagnathus scotti, Tenuacaptor reiszi (80784)
Missourian305.9 - 303.4USA (Pennsylvania) Desmatodon hollandi, Edaphosaurus raymondi (180937) Edaphosaurus raymondi (80775)
Missourian - Virgilian305.9 - 298.9USA (Pennsylvania) Clepsydrops magnus (173987)
Stephanian B304.8 - 303.4Czech Republic Macromerion schwarzenbergii, Macromerion schwartzenbergii, Naosaurus mirabilis (154179)
Gzhelian303.7 - 298.9Germany (Rhineland-Palatinate) Cryptovenator hirschbergeri (109702)
Gzhelian303.7 - 298.9Canada (Prince Edward Island) Erpetonyx arsenaultorum (171344)
Gzhelian - Asselian303.7 - 295.5Germany (Thuringia) Haptodus sp. (180761)
Gzhelian - Asselian303.7 - 295.5France (Burgundy) Belebey augustodunensis (164623)