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Exostinus lancensis

Reptilia - Xenosauridae

Taxonomy
Exostinus lancensis was named by Gilmore (1928). Its type specimen is USNM 10689, a maxilla, and it is a 3D body fossil. Its type locality is Lance Creek area (non-specific), which is in a Maastrichtian terrestrial horizon in the Lance Formation of Wyoming.

Synonyms
Synonymy list
YearName and author
1928Harpagosaurus parvus Gilmore
1928Exostinus lancensis Gilmore p. 23 figs. Pl. 26:2, Pl. 27:2, 2a
1928Prionosaurus regularis Gilmore p. 159 figs. 103; Pl. 26:1
1930Exostinus lancensis Hay p. 246
1930Harpagosaurus parvus Hay p. 256
1930Prionosaurus regularis Hay p. 257
1964Exostinus lancensis Estes p. 125
1970Exostinus lancensis Estes and Berberian p. 5
1976Exostinus lancensis Estes p. 509
1983Exostinus lancensis Estes p. 130 figs. 33c-e
1989Exostinus lancensis Bryant p. 46
1996Exostinus lancensis Gao and Fox pp. 62-64 figs. 26-27
2012Exostinus lancensis Longrich et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
RankNameAuthor
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Squamata()
—Anguimorpha(Fürbringer 1900)
familyXenosauridaeCope 1866
genusExostinus
specieslancensis

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.

†Exostinus lancensis Gilmore 1928
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Invalid names: Harpagosaurus parvus Gilmore 1928 [synonym], Prionosaurus regularis Gilmore 1928 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialf
Locomotion: actively mobilec
Diet: carnivoref
Created: 2005-09-19 07:13:08
Modified: 2005-09-19 09:13:08
Source: f = family, c = class, subp = subphylum
References: Pianka and Vitt 2003, Carroll 1988, Hendy et al. 2009

Age range: base of the Middle Campanian to the top of the Torrejonian or 83.50000 to 60.90000 Ma

Collections (14 total)


Time interval Ma Country or state Original ID and collection number
Middle Campanian - Late/Upper Campanian83.5 - 70.6USA (Montana) Exostinus lancensis (14446)
Lancian70.6 - 66.0USA (Wyoming) Exostinus lancensis (14514 14519 14566) Exostinus lancensis, Harpagosaurus parvus (14606)
Lancian70.6 - 66.0USA (Montana) Exostinus lancensis (14535 14549)
Lancian70.6 - 66.0USA (South Dakota) Exostinus lancensis (14537)
Late/Upper Maastrichtian70.6 - 66.0USA (Montana) Exostinus lancensis (13142)
Late/Upper Maastrichtian70.6 - 66.0USA (Wyoming) Exostinus lancensis (14585 type locality: 118461) Prionosaurus regularis (180016)
Torrejonian63.8 - 60.9USA (Wyoming) Exostinus lancensis (14886)
Torrejonian63.8 - 60.9USA (Montana) Exostinus lancensis (14874)