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

Albanerpeton nexuosus

Amphibia - Temnospondyli - Albanerpetontidae


Ref 42765 (Estes 1981) credits another Estes 1981 (National Geographic Research Report vol. 14) as the source of the name, but that report was not published until 1982. This reference contains the holotype indications and figures, both of which are lacking in the report, and so should be the proper naming reference for this taxon.

Send comments to me

Albanerpeton nexuosus was named by Estes (1981). Its type specimen is UCMP 49547, a mandible (left dentary), and it is a 3D body fossil. Its type locality is Lull 2 Quarry (UCMP V-5620), which is in a Maastrichtian terrestrial sandstone in the Lance Formation of Wyoming.

It was corrected as Albanerpeton nexuosum by Gardner and Böhme (2008).

Synonymy list
YearName and author
1981Albanerpeton nexuosus Estes p. 24
1989Albanerpeton nexuosus Bryant p. 31
1999Albanerpeton nexuosus Gardner p. 531
2000Albanerpeton nexuosus Gardner p. 66
2003Albanerpeton nexuosus Gardner et al. p. 315
2005Albanerpeton nexuosus Venczel and Gardner
2008Albanerpeton nexuosum Gardner and Böhme p. 179

Is something missing? Join the Paleobiology Database and enter the data

EubilateriaAx 1987
phylumChordataHaeckel 1874
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.

Albanerpeton nexuosus Estes 1981
show all | hide all
J. D. Gardner 2000Large-bodied species of Albanerpeton differing from congeners in the following autapomorphies: boss on premaxilla covers about dorsal one-half of pars dorsalis; premaxillary ornament consists of polygonal pits enclosed by ridges arranged in a reticulate pattern; dorsal flange on lingual edge of maxillary process on premaxilla prominently expanded dorsally and continuous labially with base of lateral internal strut; teeth on maxilla and dentary strongly heterodont in size anteriorly; and occlusal margins of pars dentalis on maxilla and dental parapet on dentary sinuous in labial outline, with apex adjacent to longest teeth. Most closely resembles A. inexpectatum and unnamed Paleocene species, but differs from other congeners, in the following synapomorphies: premaxilla robustly constructed, variably fused medially, with pars dorsalis short and strongly sutured dorsally with nasal; maxilla with relatively short premaxillary lateral process; and frontals with internasal process relatively narrow and acuminate or spike-like in dorsal or ventral outline. Primitively differs from A. inexpectatum in having maxilla and dentary unornamented labially, dentary lacking dorsal process behind tooth row, and fused frontals relatively narrower in dorsal outline, with ventrolateral crest relatively narrower and ventral face less concave dorsally; from unnamed Paleocene species in having premaxilla with prominent palatine process and inferred larger body size; and from both species in having premaxilla with boss present and ornament limited dorsally on pars dorsalis and in having maxilla with anterior end of tooth row in front of leading edge of nasal process.
No measurements are available
Composition: phosphaticsubp
Environment: freshwaters
Locomotion: actively mobilesubo
Life habit: aquatics
Diet: carnivoresubo
Dispersal: waterc
Created: 2005-09-14 13:35:26
Modified: 2005-09-14 15:35:26
Source: s = species, subo = suborder, c = class, subp = subphylum
References: Bryant 1989, Uhen 2004, Hendy et al. 2009, Carroll 1988

Age range: base of the Middle Cenomanian to the top of the Late/Upper Maastrichtian or 99.60000 to 66.00000 Ma

Collections (28 total)

Time interval Ma Country or state Original ID and collection number
Early/Lower Cenomanian99.6 - 93.5USA (Utah) Albanerpeton nexuosus (14396 14399)
Middle Cenomanian - Late/Upper Cenomanian99.6 - 93.5USA (Utah) Albanerpeton nexuosum (14385)
Late/Upper Santonian85.8 - 83.5USA (Utah) Albanerpeton nexuosum (181388)
Late/Upper Santonian85.8 - 83.5Canada (Alberta) Albanerpeton nexuosus (14422 14423 14425 14426 14427 14428 146190)
Early/Lower Campanian83.5 - 70.6USA (Texas) Albanerpeton nexuosum (200385)
Judithian83.5 - 70.6USA (Texas) Albanerpeton nexuosus, Albanerpeton nexuosum (14489)
Late/Upper Campanian83.5 - 70.6USA (New Mexico) Albanerpeton nexuosus (56627)
Late/Upper Campanian83.5 - 70.6USA (Utah) Albanerpeton nexuosus (14466 75846)
Middle Campanian83.5 - 70.6Canada (Alberta) Albanerpeton nexuosus (45566 47794)
Lancian70.6 - 66.0USA (Colorado) Albanerpeton sp. (14640)
Lancian70.6 - 66.0USA (Wyoming) Albanerpeton nexuosus (14514 14519)
Lancian70.6 - 66.0USA (Montana) Albanerpeton nexuosum (144499 144505 144506)
Late/Upper Maastrichtian70.6 - 66.0USA (Montana) Albanerpeton nexuosus (13142 183109)
Late/Upper Maastrichtian70.6 - 66.0Spain (Aragón) Albanerpeton nexuosum (45437)
Late/Upper Maastrichtian70.6 - 66.0USA (Wyoming) Albanerpeton nexuosus (type locality: 14585)