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Anzu wyliei (chicken from hell)

Reptilia - Theropoda - Caenagnathidae

Taxonomy
Anzu wyliei was named by Lamanna et al. (2014). Its type specimen is CM 78000, a partial skeleton, and it is a 3D body fossil. Its type locality is Sandy Site, KJ9536 (DMNH 1492), which is in a Lancian fine channel fill sandstone in the Hell Creek Formation of South Dakota.

Synonymy list
YearName and author
2014Anzu wyliei Lamanna et al. p. 3 fig. 2–5
2015Anzu wyliei Funston et al. p. 182
2015Anzu wyliei Tsuihiji et al. p. 60
2015Anzu wyliei Yao et al. p. 296
2016Anzu wyliei Funston and Currie p. 1
2016Anzu wyliei Smith et al. p. 3
2018Anzu wyliei Norell et al. p. 10
2020Anzu wyliei Funston p. 106
2020Anzu wyliei Rhodes et al. p. 1
2021Anzu wyliei Funston et al. p. 6
2022Anzu wyliei Krumenacker et al. p. 1342

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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()
RankNameAuthor
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
orderTheropoda
Neotheropoda
AverostraPaul 2002
Tetanurae
Coelurosauria()
Maniraptora
infraorderOviraptorosauria
familyCaenagnathidae
subfamilyCaenagnathinae
genusAnzu
specieswyliei

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.

Anzu wyliei Lamanna et al. 2014 [chicken from hell]
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Diagnosis
ReferenceDiagnosis
M. C. Lamanna et al. 2014Caenagnathid oviraptorosaur diagnosed by the following autapomorphies (characters observable in multiple specimens are denoted with an asterisk; hypothesized reversals are denoted with a dagger): (1) tall, crescentic cranial crest formed by posterodorsal processes of premaxillae*; (2) body of maxilla lacking antorbital fossa; (3) maxillary ascending process elongate and shaped like an inverted ‘L’; (4) quadratojugal process of jugal dorsoventrally deep{; (5) quadratojugal process of jugal bifurcated posteriorly{; (6) occipital condyle transversely wider than foramen magnum*{; (7) prominent lateral flange on symphyseal region of dentary; (8) elongate retroarticular process of mandible (retroarticular process subequal in anteroposterior length to quadrate articulation)*; (9) distal end of radius divided into two rounded processes*; (10) sulcus on ventromedial aspect of manual phalanx II-1; (11) tubercle on anterior surface of astragalus near base of ascending process*. Differs from hypothesized sister taxon Caenagnathus collinsi in possessing the following mandibular features, in addition to autapomorphies (7) and (8): (1) considerably larger size*; (2) anterodorsal margin of dentary only shallowly concave in lateral view; (3) four or five, rather than six, ‘lateral occlusal grooves’ on dentary; (4) posterodorsal process of dentary not extending to anteroposterior level of coronoid process*; (5) anteroventral flange of surangular short (such that dentary forms anterodorsal border of external mandibular fenestra)*; (6) external mandibular fenestra much greater in dorsoventral diameter (due to ventral bowing of angular and posteroventral process of dentary); (7) medial and lateral facets of mandibular glenoid subequal in width*. Differs from comparably-sized but stratigraphically older caenagnathid Hagryphus giganteus in possessing autapomorphy (10) and in having more slender proximal phalanges of manual digits I and II (mediolateral shaft width approximately 10% of maximum proximodistal length versus approximately 15% in H. giganteus).
Measurements
No measurements are available
Composition: hydroxyapatiteinfrao
Entire body: yesinfrao
Adult length: 1.0 to < 10infrao
Adult width: 0.1 to < 1.0infrao
Adult height: 1.0 to < 10infrao
Thickness: intermediateinfrao
Architecture: compact or denseinfrao
Ontogeny: accretion, modification of partsinfrao
Grouping: solitaryo
Environment: terrestrialinfrao
Locomotion: actively mobileinfrao
Life habit: ground dwellinginfrao
Depth habitat: surfaceinfrao
Diet: omnivoreinfrao
Reproduction: oviparousinfrao
Dispersal: direct/internalinfrao
Dispersal 2: mobileinfrao
Created: 2005-03-06 14:07:56
Modified: 2005-03-06 16:07:56
Source: infrao = infraorder, o = order
References: Averianov and Yarkov 2004, Marsh 1875

Age range: Late/Upper Maastrichtian or 70.60000 to 66.00000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Lancian70.6 - 66.0USA (South Dakota) Anzu wyliei, Caenagnathidae indet. (type locality: 48235)
Late/Upper Maastrichtian70.6 - 66.0USA (North Dakota) Anzu wyliei (154928)
Late/Upper Maastrichtian70.6 - 66.0USA (Montana) Anzu wyliei (152397)
Late/Upper Maastrichtian70.6 - 66.0USA (South Dakota) Anzu wyliei (224484)