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

Brachychampsa montana

Reptilia

Taxonomy
Brachychampsa montana was named by Gilmore (1911). Its type specimen is AMNH-DP 5032, a partial skull (anterior two-thirds of the skull with fragments of the posterior portion), and it is a 3D body fossil. Its type locality is Southeast of Lismas, which is in a Maastrichtian terrestrial horizon in the Hell Creek Formation of Montana.

Synonymy list
YearName and author
1911Brachychampsa montana Gilmore p. 298
1930Brachychampsa montana Hay p. 158
1964Brachychampsa montana Estes p. 142
1970Brachychampsa montana Estes and Berberian p. 6
1980Brachychampsa montana Carpenter and Lindsey p. 1213
1989Brachychampsa montana Bryant p. 54
1994Brachychampsa montana Norell et al. p. 4 figs. 1-6
1996Brachychampsa montana Williamson p. 422
2011Brachychampsa montana Puértolas et al.
2014Brachychampsa montana Carbot-Chanona p. 118

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

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
RankNameAuthor
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
—Pseudosuchia(Zittel 1890)
—SuchiaKrebs 1974
—Paracrocodylomorpha
—Loricata(Merrem 1820)
—Crocodylomorpha()
—Solidocrania
suborderCrocodyliformes
—MesoeucrocodyliaWhetstone and Whybrow 1983
—NeosuchiaClark 1988
suborderEusuchiaHuxley 1875
—Crocodylia(Owen 1842)
—Alligatoroidea(Gray 1844)
—Globidonta
—Alligatoridae(Gray 1844)
—Caimaninae
—Brachychampsini
genusBrachychampsa
speciesmontana

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.

†Brachychampsa montana Gilmore 1911
show all | hide all
Diagnosis
ReferenceDiagnosis
M. A. Norell et al. 1994Anterior end of rostrum very broad and blunt, narial aperture more than half as wide as rostrum, incisive foramen nearly half as wide as rostrum, suborbital fenestra smaller than in other alligatoroids, divided choana large, nearly excluding pterygoids from the ventral midline. Infratemporal fenestra large, nearly as large as orbit. Fifth maxillary tooth largest in the tooth row (reversal to the primitive condition for Crocodylia).
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: freshwaterg
Locomotion: actively mobilec
Life habit: amphibiousg
Diet: carnivoreg
Created: 2005-09-23 11:51:52
Modified: 2010-11-29 02:51:36
Source: g = genus, c = class, subp = subphylum
References: Hendy et al. 2009, Carroll 1988, Sullivan and Lucas 2003

Age range: base of the Maastrichtian to the top of the Lancian or 72.10000 to 66.00000 Ma

Collections (81 total)


Time interval Ma Country or state Original ID and collection number
Judithian83.5 - 70.6USA (Wyoming) Brachychampsa montana (14458)
Late/Upper Campanian83.5 - 70.6USA (New Mexico) Brachychampsa montana (36269 47818)
Maastrichtian72.1 - 66.0USA (North Dakota) Brachychampsa montana (45313)
Lancian70.6 - 66.0USA (Wyoming) Brachychampsa montana (14505 14514 14519 14524 14527 14538 14557 14566 14578 14579 14596 14601 14625 14643 14644)
Lancian70.6 - 66.0USA (Montana) Brachychampsa montana (14512 14515 14533 14534 14535 14536 14546 14548 14549 14552 14559 14574 14582 14615 14616 14639 14654)
Lancian70.6 - 66.0USA (South Dakota) Brachychampsa montana (14537 192251)
Lancian70.6 - 66.0USA (North Dakota) Brachychampsa montana (14610 14620 14621 137601 137710 137711 137722 137724 137727)
Lancian70.6 - 66.0USA (Colorado) Brachychampsa montana (14640)
Late/Upper Maastrichtian70.6 - 66.0USA (North Dakota) Brachychampsa montana (45098 45099 45102 45109 45110 45111 45112 45114 45118 45119 45120 45122 45128 45134 45136 45143 45144 45145 45299 45309 45381 45382 137718)
Late/Upper Maastrichtian70.6 - 66.0USA (Wyoming) Brachychampsa montana (14585 57158 57163 57166 57168)
Late/Upper Maastrichtian70.6 - 66.0USA (South Dakota) Brachychampsa montana (45390 47034 47628)
Late/Upper Maastrichtian70.6 - 66.0USA (Montana) Brachychampsa montana (13142 type locality: 100110)