PBDB Taxon

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Lepospondyli

Amphibia

Taxonomy

Lepospondyli was named by von Zittel (1887) [Whether the taxon is extinct or not depends on exclusion (temnospondyl hypothesis) or inclusion (lepospondyl hypothesis, diphyly hypothesis) of extant amphibian groups.]. It was considered paraphyletic by Laurin et al. (2000).

It was reranked as the order Lepospondyli by Gadow (1898), Kuhn (1946); it was synonymized subjectively with Microsauria by Hay (1902); it was synonymized subjectively with Microsauria by Jaekel (1911); it was reranked as the subclass Lepospondyli by Daly (1973), Carroll (1988); it was reranked as the subclass Lepospondylia by Haubold (1974); it was misspelled as Lepospondylia by Moodie (1916), Swinton (1934); it was reranked as the unranked clade Lepospondyli by Gardiner (1982), Laurin et al. (2000), Huttenlocker et al. (2013).

It was assigned to Stegocephali by Gadow (1898); to Stegocephali by von Zittel (1887), Swinton (1934); to Stegocephalia by Kuhn (1946); to Amphibia by Moodie (1916), Daly (1973), Haubold (1974), Carroll (1988); to Amphibia by Gardiner (1982), Laurin et al. (2000); and to Tetrapoda by Huttenlocker et al. (2013).

Subtaxa

Acherontiscidae, Microsauria, Nectridea, Orthocosta, Seelya

Synonymy list

Year	Name and author
1887	Lepospondyli von Zittel pp. 369, 370
1898	Lepospondyli Gadow p. 12
1916	Lepospondylia Moodie p. 47
1934	Lepospondyli Swinton p. 81
1946	Lepospondyli Kuhn p. 53
1973	Lepospondyli Daly p. 570
1974	Lepospondylia Haubold p. 24
1982	Lepospondyli Gardiner
1988	Lepospondyli Carroll
2000	Lepospondyli Laurin et al. p. 120 fig. 2b
2013	Lepospondyli Huttenlocker et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()

Rank	Name	Author
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
class	Amphibia
—	Lepospondyli	()
—	Lepospondyli	()

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.

Unr. †Lepospondyli von Zittel 1887

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Fm. †Acherontiscidae Carroll 1967

G. †Acherontiscus Carroll 1969

†Acherontiscus caledoniae Carroll 1969

Unr. †Microsauria Dawson 1863

G. †Altenglanerpeton Glienke 2012

†Altenglanerpeton schroederi Glienke 2012

G. †Amblyodon Dawson 1882

G. †Archerpeton Carroll 1964

Invalid names: Archerpeton anthracos Carroll 1964 [nomen dubium]

G. †Barillopus Matthew 1903

†Barillopus arctus Matthew 1904

†Barillopus confusus Matthew 1904

†Barillopus unguifer Matthew 1903

G. †Cymatorhiza Olson and Barghusen 1962

†Cymatorhiza kittsi Olson and Barghusen 1962

G. †Dromillopus Matthew 1904

†Dromillopus celer Matthew 1903

†Dromillopus obtusus Matthew 1904

†Dromillopus quadrifidus Matthew 1904

G. †Eurythorax Cope 1871

†Eurythorax sublaevis Cope 1871

Fm. †Hylonomidae Fritsch 1883

G. †Smilerpeton Dawson 1882

G. †Hyphasma Cope 1875

†Hyphasma laevis Cope 1875

Fm. †Microbrachidae Fritsch 1883

G. †Microbrachis Fric 1875

†Microbrachis mollis Fritsch 1883

†Microbrachis pelikani Fritsch 1875

Invalid names: Microbrachis branchiophorus Fritsch 1883 [synonym]

Subor. †Microbrachomorpha Carroll and Gaskill 1978

Fm. †Hyloplesiontidae Carroll and Gaskill 1978

G. †Hyloplesion Fritsch 1883

†Hyloplesion longicostatum Fritsch 1875

Fm. †Odonterpetontidae Carroll and Gaskill 1978

G. †Odonterpeton Moodie 1909

†Odonterpeton triangulare Moodie 1909

G. †Novascoticus Carroll 1966

†Novascoticus multidens Dawson 1882

G. †Ornithoides Matthew 1903

†Ornithoides adamsi Matthew 1904

†Ornithoides trifidus Dawson 1895

G. †Paramicrobrachis Kuhn 1959

†Paramicrobrachis fritschi Kuhn 1959

G. †Pariostegus Cope 1868

†Pariostegus myops Cope 1868

Fm. †Ptyoniidae Cope 1875

G. †Lepterpeton Wright and Huxley 1866

†Lepterpeton dobbsii Wright and Huxley 1866

G. †Puertollanopus Soler-Gijón and Moratalla 2001

†Puertollanopus omicrodactylus Soler-Gijón and Moratalla 2001

G. †Saxonerpeton Carroll and Gaskill 1978

†Saxonerpeton geinitzi Credner 1890

G. †Stenichnus Gilmore 1927

†Stenichnus yakiensis Gilmore 1927

G. †Thyrsidium Cope 1875

†Thyrsidium fasciculare Cope 1875

Subor. †Tuditanomorpha Carroll and Gaskill 1978

Fm. †Goniorhynchidae Carroll and Gaskill 1978

G. †Rhynchonkos Schulze and Foreman 1981

†Rhynchonkos stovalli Olson 1970

Fm. †Hapsidopareiidae Marjanović and Laurin 2019

Invalid names: Hapsidopareiontidae Daly 1973 [replaced]

Fm. †Trihecatontidae Vaughn 1972

G. †Trihecaton Vaughn 1972

†Trihecaton howardinus Vaughn 1972

Fm. †Tuditanidae Cope 1875

G. †Boii Carroll 1966

†Boii crassidens Fritsch 1876

G. †Crinodon Carroll and Gaskill 1978

†Crinodon limnophyes Steen 1938

G. †Tuditanus Cope 1871

†Tuditanus punctulatus Cope 1875

G. †Utaherpeton Carroll et al. 1991

†Utaherpeton franklini Carroll et al. 1991

Invalid names: Haplosauri Jaekel 1911 [empty], Protritonidae Nicholson and Lydekker 1889 [empty], Sauropleuridae Hay 1902 [empty], Urosauri Jaekel 1911 [empty]

Unr. †Nectridea Miall 1875

G. †Arizonerpeton Thayer 1985

†Arizonerpeton wellsi Thayer 1985

Fm. †Diplocaulidae Cope 1881

G. †Batrachiderpeton Hancock and Atthey 1871

†Batrachiderpeton lineatum Hancock and Atthey 1869

†Batrachiderpeton reticulatum Hancock and Atthey 1869

G. †Diceratosaurus Jaekel 1903

†Diceratosaurus brevirostris Cope 1875

G. †Diploceraspis

†Diploceraspis burkei Romer 1952

Invalid names: Diploceraspis conemaughensis Romer 1952 [synonym]

G. †Hermundurichnus Walter and Werneburg 1988

G. †Keraterpeton Wright and Huxley 1866

†Keraterpeton galvani Huxley 1867

†Keraterpeton gigas Fritsch 1889

†Keraterpeton longtoni Carroll et al. 1998

†Keraterpeton punctolineatum Cope 1875

Invalid names: Keraterpetontidae Jaekel 1903 [synonym]

Fm. †Scincosauridae Jaeckel 1909

G. †Sauravus Thevenin 1906

†Sauravus cambrayi Carroll et al. 1998

†Sauravus costei Thevenin 1906

G. †Scincosaurus Fric 1876

†Scincosaurus crassus Fritsch 1875

†Scincosaurus spinosus Civet 1982

Fm. †Urocordylidae Lydekker 1889

G. †Ctenerpeton Cope 1897

†Ctenerpeton primum Aldrich and Jones 1930

†Ctenerpeton remex Cope 1868

Invalid names: Ctenerpeton alveolatum Cope 1897 [synonym]

Subfm. †Sauropleurinae Carroll et al. 1998

G. †Crossotelos Case 1902

†Crossotelos annulatus Case 1902

G. †Montcellia Dutuit and Heyler 1994

†Montcellia longidentata Moodie 1909

G. †Sauropleura Cope 1868

†Sauropleura bairdi Carroll et al. 1998

†Sauropleura longicaudata Langiaux et al. 1974

†Sauropleura pauciradiata Cope 1874

†Sauropleura scalaris Fritsch 1883

Invalid names: Ptyonius bendai Fritsch 1901 [synonym], Ptyonius distinctus Fritsch 1901 [synonym]

Subfm. †Urocordylinae Carroll et al. 1998

G. †Ptyonius Cope 1875

†Ptyonius marshi Cope 1869

†Ptyonius marshii Cope 1869

†Ptyonius nummifer Cope 1875

†Ptyonius olisthmonaias Thayer 1985

†Ptyonius serrula Cope 1871

†Ptyonius vinchellianus Cope 1871

G. †Urocordylus Wright and Huxley 1866

†Urocordylus angustatus Fritsch 1883

†Urocordylus wandesfordii Huxley 1867

G. †Orthocosta Fritsch 1883

†Orthocosta microscopa Fritsch 1883

G. †Seelya Fritsch 1883

†Seelya pusilla Fritsch 1883

Diagnosis

Reference	Diagnosis
K. A. von Zittel 1887	Wirbelkörper aus einheitlichen Knochenhülsen bestehend, welche Reste der Chorda umschliessen. Hinterhaupt knorpelig oder verknöchert. Zähne einfach, mit grosser Pulpa.