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Atrociraptor marshalli

Reptilia - Dromaeosauridae

Taxonomy
Atrociraptor marshalli was named by Currie and Varricchio (2004). Its type specimen is TMP 95.166.1, a partial skull, and it is a 3D body fossil. Its type locality is 5 km west of Royal Tyrrell Museum, which is in a Maastrichtian terrestrial sandstone/sandstone in the Horseshoe Canyon Formation of Canada.

Synonymy list
YearName and author
2004Atrociraptor marshalli Currie and Varricchio p. 15
2008Atrociraptor marshalli Godefroit et al. p. 436
2008Atrociraptor marshalli Longrich p. 137
2009Atrociraptor marshalli Longrich and Currie
2013Atrociraptor marshalli Larson and Currie p. 8
2014Atrociraptor marshalli Williamson and Brusatte p. 16
2015Atrociraptor marshalli Currie and Koppelhus p. 626
2015Atrociraptor marshalli DePalma et al. p. 1
2016Atrociraptor marshalli Bell and Currie p. 8

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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()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
RankNameAuthor
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
—Coelurosauria()
—Maniraptora
—Paraves
infraorderDeinonychosauria
familyDromaeosauridae
—Eudromaeosauria
subfamilySaurornitholestinae
genusAtrociraptor
speciesmarshalli

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.

†Atrociraptor marshalli Currie and Varricchio 2004
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Diagnosis
ReferenceDiagnosis
P. J. Currie and D. J. Varricchio 2004Small velociraptorine, dromaeosaurid theropod that differs from Saurornitholestes and Velociraptor in having a shorter, deeper face. Subnarial body of premaxilla is taller than its anteroposterior length as in Deinonychus and possibly Dromaeosaurus. Internarial and maxillary processes of premaxilla subparallel and oriented more dorsally than posteriorly. Larger maxillary fenestra than in any other velociraptorines. Maxillary fenestra is directly above the promaxillary fenestra, rather than well behind it as in all other dromaeosaurids. Maxillary teeth more strongly inclined toward the throat than in all other dromaeosaurids except Bambiraptor and Deinonychus. Maxillary dentition is essentially isodont.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
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: terrestrialf
Locomotion: actively mobileo
Life habit: ground dwellingf
Diet: carnivoref
Reproduction: oviparousf
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2005-09-11 17:04:18
Modified: 2005-09-11 19:04:18
Source: f = family, o = order
References: Marsh 1875, Holtz et al. 2000

Age range: Early/Lower Maastrichtian or 70.60000 to 66.00000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0Canada (Alberta) Atrociraptor marshalli (152268 152270 152271)
Early/Lower Maastrichtian70.6 - 66.0Canada (Alberta) Atrociraptor marshalli (type locality: 92963) Dromaeosauridae indet. (55363)