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Anzu wyliei (chicken from hell)
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
Year | Name and author |
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2014 | Anzu wyliei Lamanna et al. p. 3 fig. 2–5 |
2015 | Anzu wyliei Funston et al. p. 182 |
2015 | Anzu wyliei Tsuihiji et al. p. 60 |
2015 | Anzu wyliei Yao et al. p. 296 |
2016 | Anzu wyliei Funston and Currie p. 1 |
2016 | Anzu wyliei Smith et al. p. 3 |
2018 | Anzu wyliei Norell et al. p. 10 |
2020 | Anzu wyliei Funston p. 106 |
2020 | Anzu wyliei Rhodes et al. p. 1 |
2021 | Anzu wyliei Funston et al. p. 6 |
2022 | Anzu wyliei Krumenacker et al. p. 1342 |
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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
Reference | Diagnosis | |
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M. C. Lamanna et al. 2014 | Caenagnathid 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
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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 |
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Lancian | USA (South Dakota) | Anzu wyliei, Caenagnathidae indet. (type locality: 48235) | |
Late/Upper Maastrichtian | USA (Montana) | Anzu wyliei (152397) | |
Late/Upper Maastrichtian | USA (North Dakota) | Anzu wyliei (154928) | |
Late/Upper Maastrichtian | USA (South Dakota) | Anzu wyliei (224484) |