PBDB Taxon

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Triaenopus

Amphibia

Taxonomy

Triaenopus was named by Hitchcock (1845). It is considered to be a form taxon.

It was assigned to Tetradactylidae by Hitchcock (1845); to Lacertilia by Hitchcock (1848); to Reptilia by Lull (1904), Lull (1917), Lull (1953); to Amphibia by Kuhn (1958); to Labyrinthodontia by Kuhn (1963); and to Saurischia by Haubold (1974).

Species

T. emmonsii (syn. Sauroidichnites baileyi), T. leptodactylus, T. lulli

Synonymy list

Year	Name and author
1845	Triaenopus Hitchcock p. 24
1848	Triaenopus Hitchcock p. 202
1904	Triaenopus Lull p. 539
1917	Triaenopus Lull p. 126
1953	Triaenopus Lull p. 275
1958	Triaenopus Kuhn p. 17
1963	Triaenopus Kuhn p. 52
1974	Triaenopus Haubold p. 46

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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
subclass	Apsidospondyli
superorder	Labyrinthodontia	()
genus	Triaenopus

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. †Triaenopus Hitchcock 1845

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†Triaenopus emmonsii Hitchcock 1841

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Invalid names: Sauroidichnites baileyi Hitchcock 1841 [synonym]

†Triaenopus leptodactylus Hitchcock 1858

†Triaenopus lulli Thorpe 1929

Diagnosis

Reference	Diagnosis
E. Hitchcock 1848	Feet tridactyle in front, plantigrade; divarication small: toes very slender; hind toe proceeding from the extremity, or near the extremity, of the heel. Heel very slender. Gregarious.

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

brackish, freshwater, terrestrialuc

Locomotion:

actively mobilec

Dispersal:

waterc

Created:

2005-03-06 14:47:58

Modified:

2005-03-06 16:47:58

Source: c = class, subp = subphylum, uc = unranked clade

References: Uhen 2004, Hendy et al. 2009, Carroll 1988

Age range: Hettangian or 201.40000 to 199.50000 Ma

Collections (5 total)

Time interval	Ma	Country or state	Original ID and collection number
Hettangian	201.4 - 199.5	USA (Connecticut)	T. lulli (51258)
Hettangian	201.4 - 199.5	USA (Massachusetts)	T. sp. (52986)
Hettangian - Sinemurian	201.4 - 192.9	USA (Massachusetts)	T. leptodactylus (52996)
Hettangian - Sinemurian	201.4 - 192.9	USA (Connecticut)	Sauroidichnites baileyi, Sauroidichnites emmonsii (53023) T. baileyanus, T. emmonsianus (53000)