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Alexornis antecedens

Reptilia - Alexornithiformes - Alexornithidae

Taxonomy
Alexornis antecedens was named by Brodkorb (1976). Its type specimen is LACM 33213, a limb element (distal 10 mm of right humerus), and it is a 3D body fossil. Its type locality is southwest of El Rosario, which is in a Santonian terrestrial horizon in the La Bocana Roja Formation of Mexico. It is the type species of Alexornis.

Synonymy list
YearName and author
1976Alexornis antecedens Brodkorb p. 68
1982Alexornis antecedens Morris pp. 487-488
1991Alexornis antecedens Chiappe
1994Alexornis antecedens Chiappe and Calvo p. 236
2014Alexornis antecedens Rivera-Sylva and Carpenter p. 151

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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)
—Crocopoda
RankNameAuthor
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
—Coelurosauria()
—Maniraptora
—Paraves
classAves
—PygostyliaChiappe 2002
—Ornithothoraces
subclassEnantiornithes
orderAlexornithiformes
familyAlexornithidae
genusAlexornis
speciesantecedens

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.

†Alexornis antecedens Brodkorb 1976
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Diagnosis
No diagnoses are available