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


Synonymy list
YearName and author
1758Amphibia Linnaeus p. 12
1880Amphibia Huxley p. 661
1898Amphibia Gadow p. 12
1981Amphibia Thurmond and Jones p. 109
1982Amphibia Gardiner p. 228
1985Amphibia Benton p. 153
1988Amphibia Gauthier et al. p. 139 fig. 4.3
1989Amphibia Gauthier et al. p. 339
1989Amphibia Shoshani et al. p. 436
2000Amphibia Laurin et al. p. 119 fig. 2b
2002Amphibia Sepkoski, Jr.
2003Amphibia Meyer and Zardoya

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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
Environment: brackish, freshwater, terrestrialsubp
Locomotion: actively mobilec
Dispersal: waterc
Created: 2005-03-06 14:47:58
Modified: 2005-03-06 16:47:58
Source: c = class, subp = subphylum
References: Uhen 2004, Carroll 1988, Hendy et al. 2009

Age range

Maximum range based only on fossils: base of the Holkerian to the top of the Holocene or 342.80000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 336.0 Ma

Collections (311 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Mississippian358.9 - 323.2USA (Pennsylvania) Batrachichnus sp. (197984)
Holkerian - Asbian342.8 - 336.0United Kingdom (Scotland) Lethiscus stocki (140937)
Brigantian336.0 - 326.4United Kingdom (Scotland) Ophiderpeton kirktonense (22725)
Arnsbergian326.4 - 318.1USA (Illinois) Microsauria indet. (68319)
Pendleian326.4 - 318.1United Kingdom (England) Lepospondyli indet. (22726)
Pendleian326.4 - 318.1United Kingdom (Scotland) Acherontiscus caledoniae (174421)
Bashkirian323.2 - 315.2United Kingdom (England) Batrachiderpeton lineatum (132670) Keraterpeton longtoni (176262) Urocordylidae indet., Lysorophus sp., Urocordylus reticulatus, Ophiderpeton nanum (177139)
Bashkirian323.2 - 315.2USA (Utah) Utaherpeton franklini (117869)
Westphalian A318.1 - 314.6Canada (Nova Scotia) Lepospondyli indet., Leiocephalikon eutheton, Amblyodon problematicum, Hylerpeton dawsoni, Novascoticus multidens (28069) Ricnodon sp., Leiocephalikon problematicum, Archerpeton anthracos, Trachystegos megalodon, Asaphestera intermedia (86946)
Westphalian A318.1 - 314.6United Kingdom (England) Lysorophus sp. (175174) Palaeogyrinus decorus (176254)
Westphalian A318.1 - 314.6Ireland (Lenister) Ophiderpeton sp., Lepterpeton dobbsii, Urocordylus wandesfordii, Keraterpeton galvani, Ophiderpeton brownriggi, Dolichosoma emersoni (175806)
Westphalian A - Westphalian B318.1 - 314.6USA (Arizona) Lepospondyli indet., Elfridia bulbidens, Ophiderpeton swisshelmense, Phlegethontia phanerhapha, Ptyonius olisthmonaias, Arizonerpeton wellsi (92271)
Westphalian318.1 - 306.95USA (Alabama) Ctenerpeton primum (84135)
Westphalian318.1 - 306.95USA (Pennsylvania) Ctenerpeton alveolatum (165526)
Moscovian315.2 - 307.0USA (Colorado) Trihecaton howardinus, Coloraderpeton brilli (176968)
Moscovian315.2 - 307.0USA (Illinois) Diabloroter bolti (201784)
Middle Pennsylvanian314.6 - 306.95USA (West Virginia) Amphibia indet. (125959)
Kashirian313.8 - 311.45United Kingdom (Scotland) Palaeogyrinus decorus (157227)
Desmoinesian313.8 - 305.9USA (Ohio) Oestocephalus amphiuminus, Diceratosaurus brevirostris (176092)
Westphalian D311.45 - 306.95USA (Ohio) Molgophis macrurus (178682 178696 178697 178698) Phlegethontia linearis, Phlegethontia serpens, Phlegethontia longissima, Tuditanus brevirostris, Odonterpeton triangulare, Tuditanus punctulatus, Colosteus marshii, Sauropleura pectinata, Oestocephalus amphiuminum, Cercariomorphus parvisquamis, Sauropleura remex, Molgophis macrurus, Ophiderpeton amphiuminum (85292)