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Smilosuchus gregorii

Reptilia - Parasuchidae

Taxonomy
Machaeroprosopus gregorii was named by Camp (1930). Its type specimen is UCMP A272/27200, a skull (Complete skull, eight vertebrae, femur and three dermal scutes), and it is a 3D body fossil. Its type locality is Round Rock 2 (UCMP A272), which is in a Norian terrestrial horizon in the Chinle Formation of Arizona.

It was recombined as Phytosaurus gregorii by Gregory (1962); it was recombined as Nicrosaurus gregorii by Westphal (1976); it was recombined as Rutiodon gregorii by Parrish and Carpenter (1986) and Parrish (1993); it was recombined as Leptosuchus gregorii by Irmis (2005); it was recombined as Smilosuchus gregorii by Long and Murry (1995), Lucas et al. (1997), Lucas et al. (2002), Spielmann et al. (2006), Stocker (2010), Nesbitt (2011), Spielmann and Lucas (2012), Hungerbühler et al. (2013), Stocker and Butler (2013) and Parker et al. (2013).

Synonymy list
YearName and author
1930Machaeroprosopus gregorii Camp
1962Phytosaurus gregorii Gregory p. 21
1976Nicrosaurus gregorii Westphal
1986Rutiodon gregorii Parrish and Carpenter p. 152
1993Rutiodon gregorii Parrish pp. 291-292 fig. 4
1995Smilosuchus gregorii Long and Murry
1997Smilosuchus gregorii Lucas et al. pp. 53-54
2002Smilosuchus gregorii Lucas et al. p. 191
2005Leptosuchus gregorii Irmis pp. 72-73
2006Smilosuchus gregorii Spielmann et al. p. 508
2010Smilosuchus gregorii Stocker p. supplement
2011Smilosuchus gregorii Nesbitt p. 18
2012Smilosuchus gregorii Spielmann and Lucas
2013Smilosuchus gregorii Hungerbühler et al.
2013Smilosuchus gregorii Parker et al.
2013Smilosuchus gregorii Stocker and Butler

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
RankNameAuthor
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
Pseudosuchia(Zittel 1890)
Phytosauria(Jaeger 1828)
familyParasuchidaeLydekker 1885
subfamilyMystriosuchinaevon Huene 1915
Leptosuchomorpha
genusSmilosuchus
speciesgregorii()

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.

Smilosuchus gregorii Camp 1930
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Diet: carnivoresubo
Created: 2009-01-03 20:38:18
Modified: 2009-01-03 22:38:18
Source: subo = suborder, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Hendy et al. 2009, Benton 1983

Age range: base of the Carnian to the top of the Norian or 237.00000 to 208.50000 Ma

Collections (6 total)


Time interval Ma Country or state Original ID and collection number
Carnian237.0 - 228.0USA (Texas) Smilosuchus gregorii (84271)
Carnian - Norian237.0 - 208.5USA (Texas) Smilosuchus gregorii (71982)
Norian228.0 - 208.5USA (Arizona) Machaeroprosopus gregorii (type locality: 93362 93547) Smilosuchus gregorii (93358 93363)