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Avimimus portentosus

Reptilia

Taxonomy
Avimimus portentosus was named by Kurzanov (1981). Its type specimen is PIN 3907/1, a partial skeleton, and it is a 3D body fossil. Its type locality is Udan-Sayr (PIN Loc. 3907) [MPE/SMPE], which is in a Campanian terrestrial sandstone/sandstone in the Djadokhta Formation of Mongolia. It was considered monophyletic by Currie (2000).

Synonymy list
YearName and author
1981Avimimus portentosus Kurzanov
1982Avimimus portentosus Kurzanov p. 108
1983Avimimus portentosus Kurzanov p. 110
1983Avimimus portentosus Kurzanov and Bannikov p. 91
1985Avimimus portentosus Kurzanov p. 92
1988Avimimus portentosus Paul p. 401
1991Avimimus portentosus Chatterjee p. 327
1992Avimimus portentosus Molnar p. 262
1994Avimimus portentosus Mikhailov p. 115
1996Avimimus portentosus Osmólska p. 31
1997Avimimus portentosus Barsbold p. 448
1997Avimimus portentosus Osmólska p. 41
2000Avimimus portentosus Currie p. 443
2002Avimimus portentosus Maryanska et al. pp. 101-104 fig. 1
2002Avimimus portentosus Vickers-Rich et al. p. 65
2003Avimimus portentosus Rauhut p. 31
2004Avimimus portentosus Lü et al. p. 109 fig. 8
2004Avimimus portentosus Osmólska et al. p. 166
2007Avimimus portentosus Averianov p. 542
2007Avimimus portentosus Turner et al. p. 24
2009Avimimus portentosus Balanoff et al. p. 2
2009Avimimus portentosus Turner et al. p. 11
2010Avimimus portentosus Longrich et al. p. 955
2012Avimimus portentosus Fanti et al. p. 10
2013Avimimus portentosus Fernandes de Azevedo et al. p. 138
2013Avimimus portentosus Longrich et al. p. 37
2014Avimimus portentosus Lamanna et al. p. 10 fig. 6
2015Avimimus portentosus Sues and Averianov p. 58
2015Avimimus portentosus Yao et al. p. 292
2016Avimimus portentosus Funston and Currie p. 6
2016Avimimus portentosus Wang et al. p. 12
2017Avimimus portentosus Chinzorig et al. p. 10
2017Avimimus portentosus Tsuihiji et al. p. 2
2018Avimimus portentosus Funston et al. p. 103
2018Avimimus portentosus Norell et al. p. 10
2019Avimimus portentosus Funston et al. p. 1
2020Avimimus portentosus Czepiński p. 490
2020Avimimus portentosus Rhodes et al. p. 9

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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
RankNameAuthor
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
—Coelurosauria()
—Maniraptora
infraorderOviraptorosauria
genusAvimimus
speciesportentosus

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.

†Avimimus portentosus Kurzanov 1981
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Diagnosis
ReferenceDiagnosis
T. Tsuihiji et al. 2017(Cranial Characters) Avimimus portentosus is distinguished from other oviraptorosaurians on the basis of the following autapomorphies: five denticulations along occlusal margin of premaxilla (as proposed by Kurzanov, 1987); posterior margin of fused nasals strongly concave, surrounding large fossae posteriorly bounded by frontals; quadratojugal thin and long, reaching anterior one-third of orbit; and bones of braincase, squamosal, quadrate, quadratojugal, postorbital, and pterygoid co-ossified.
G. F. Funston et al. 2018Small oviraptorosaurian theropod diagnosed by the following features (autapomorphies indicated by asterisk, plesiomorphies indicated by dagger): premaxilla invaded by antorbital fenestra*; fused neuro- cranium*; low mandible with poorly developed symphyseal shelf†; dorsal vertebrae without lateral pleurocoels*; fused carpometacarpus*; fused tibiotarsus incorporating distal end of fibula*; fused tarsometatarsus lacking first digit and with proximally absent third metatarsal*.