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Gerrhonotus (alligator lizard)

Reptilia - Anguidae

Taxonomy
Gerrhonotus was named by Wiegmann (1828). It is extant.

It was synonymized subjectively with Abronia by Kuhn (1966).

It was assigned to Gerrhonotinae by McDowell and Bogert (1954); to Anguinae by Estes (1976); to Gerrhonotidae by Cope (1875), Estes (1964) and Estes (1983); and to Anguidae by Estes and Tihen (1964), Yatkola (1976), Carroll (1988) and Frank and Ramus (1996).

Species
G. imbricatus, G. liocephalus, G. lugoi
Species lacking formal opinion data
G. mungerorum

Synonymy list
YearName and author
1828Gerrhonotus Wiegmann
1875Gerrhonotus Cope p. 46
1954Gerrhonotus McDowell and Bogert p. 130
1964Gerrhonotus Estes p. 122
1964Gerrhonotus Estes and Tihen p. 468
1976Gerrhonotus Estes p. 510
1976Gerrhonotus Yatkola p. 652
1983Gerrhonotus Estes
1988Gerrhonotus Carroll
1996Gerrhonotus Frank and Ramus

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
RankNameAuthor
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Squamata()
—Anguimorpha(Fürbringer 1900)
—Anguiformes(Bonaparte 1831)
superfamilyAnguioideaFitzinger 1826
familyAnguidaeGray 1825
subfamilyGerrhonotinae(Cope 1864)
genusGerrhonotusWiegmann 1828

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. Gerrhonotus Wiegmann 1828 [alligator lizard]
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Gerrhonotus imbricatus Wiegmann 1828 [Rain alligator lizard]
Gerrhonotus liocephalus Wiegmann 1828 [Texas alligator lizard]
Gerrhonotus liocephalus infernalis Baird 1858 [Texas alligator lizard]
Gerrhonotus lugoi McCoy 1970 [Lugo's alligator lizard]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialuc
Locomotion: actively mobilec
Diet: insectivoref
Diet 2: carnivoref
Created: 2005-09-05 19:41:37
Modified: 2005-09-23 16:25:38
Source: f = family, c = class, subp = subphylum, uc = unranked clade
References: Carroll 1988, Behler and King 1979, Hendy et al. 2009

Age range

Maximum range based only on fossils: base of the Late/Upper Maastrichtian to the top of the Rancholabrean or 70.60000 to 0.01200 Ma
Minimum age of oldest fossil (stem group age): 66.0 Ma

Collections (22 total)


Time interval Ma Country or state Original ID and collection number
Lancian70.6 - 66.0USA (Wyoming) Gerrhonotus sp. (14514)
Late/Upper Maastrichtian70.6 - 66.0USA (Wyoming) Gerrhonotus sp. (14585)
Torrejonian63.8 - 60.9USA (Montana) Gerrhonotus sp. (14874)
Clarkforkian56.2 - 54.9USA (Wyoming) Gerrhonotus sp. (15151)
Lostcabinian55.8 - 50.3USA (Wyoming) Gerrhonotus sp. (15917)
Wasatchian55.8 - 50.3USA (Wyoming) Gerrhonotus sp. (15793)
Early/Lower Hemingfordian20.43 - 15.97USA (Nebraska) Gerrhonotus sp. (17963)
Hemingfordian20.43 - 15.97USA (Wyoming) Gerrhonotus sp. (19074 19075 19076 19077 19078 19079)
Barstovian16.3 - 12.5USA (Nebraska) Gerrhonotus indet. (18102) Gerrhonotus mungerorum (18141) Gerrhonotus sp. (18165 18284)
Clarendonian12.5 - 9.4USA (Kansas) Gerrhonotus mungerorum (18450)
Irvingtonian1.8 - 0.3USA (California) Gerrhonotus sp. (20178)
Rancholabrean0.3 - 0.012USA (California) Gerrhonotus coeruleus (84880) Gerrhonotus sp. (84885)
Rancholabrean - Holocene0.3 - 0.0USA (California) Gerrhonotus multicarinatus (84904)