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Marshosaurus bicentesimus

Reptilia - Piatnitzkysauridae

Taxonomy
Marshosaurus bicentesimus was named by Madsen (1976). Its type specimen is UMNH VP 6373/UUVP 2826, a set of postcrania (left ilium), and it is a 3D body fossil. Its type locality is Cleveland-Lloyd Dinosaur Quarry, which is in a Tithonian pond mudstone/lime mudstone in the Morrison Formation of Utah.

Synonymy list
YearName and author
1976Marshosaurus bicentesimus Anonymous p. 359
1976Marshosaurus bicentesimus Madsen, Jr. pp. 51-52
1977Marshosaurus bicentesimus Sues p. 180
1978Marshosaurus bicentesimus Madsen Jr. and Stokes p. 69
1982Marshosaurus bicentesimus Anonymous p. 12
1984Marshosaurus bicentesimus Jensen p. 375
1984Marshosaurus bicentesimus Welles pp. 171-172
1988Marshosaurus bicentesimus Paul p. 289
1989Marshosaurus bicentesimus Hutt et al. p. 141
1997Marshosaurus bicentesimus Chure et al. p. 38A
1997Marshosaurus bicentesimus Smith p. 126
2000Marshosaurus bicentesimus Chure p. 2
2000Marshosaurus bicentesimus Foster and Chure p. 8 fig. 3
2004Marshosaurus bicentesimus Holtz, Jr. et al. p. 77
2005Marshosaurus bicentesimus Carpenter et al. p. 24
2006Marshosaurus bicentesimus Chure et al. p. 236
2006Marshosaurus bicentesimus Hunt and Lucas p. 116
2006Marshosaurus bicentesimus Mateus p. 231
2007Marshosaurus bicentesimus Sampson and Witmer p. 38
2007Marshosaurus bicentesimus Turner et al. p. 6
2012Marshosaurus bicentesimus Carrano et al. p. 235
2013Marshosaurus bicentesimus Hanson and Makovicky p. 780

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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
—Sauropsida
classReptilia
subclassEureptilia()
RankNameAuthor
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
superfamilyMegalosauroidea()
familyPiatnitzkysauridae
genusMarshosaurus
speciesbicentesimus

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.

†Marshosaurus bicentesimus Madsen, Jr. 1976
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Diagnosis
ReferenceDiagnosis
M. T. Carrano et al. 2012Megalosauroid theropod with: (1) no prominent ventral keels on posterior cervical and anterior dorsal vertebrae; and (2) articular surface of pubic peduncle divided into anterior bulge and posterior concavity (modified from Madsen 1976b).
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yesg
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: solitaryo
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: carnivoreo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2005-08-24 13:28:51
Modified: 2005-08-24 15:28:51
Source: g = genus, o = order
References: Marsh 1875, Peczkis 1995

Age range: Tithonian or 149.20000 to 143.10000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Kimmeridgian - Tithonian154.8 - 143.1USA (Utah) Megalosauridae indet. (55350)
Tithonian149.2 - 143.1USA (Utah) Marshosaurus bicentesimus (type locality: 46439)