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Zapsalis abradens

Reptilia - Avetheropoda - Dromaeosauridae

Taxonomy
Zapsalis abradens was named by Cope (1876). It is not extant. Its type specimen is AMNH 3953. It is the type species of Zapsalis.

It was synonymized subjectively with Paronychodon lacustris by Estes (1964); it was considered a nomen dubium by Makovicky and Norell (2004).

Synonymy list
YearName and author
1876Zapsalis abradens Cope p. 345
1877Zapsalis abradens Cope p. 572
1902Zapsalis abradens Hay p. 490
1922Zapsalis abradens Matthew and Brown p. 376
1970Zapsalis abradens Steel p. 45
2013Zapsalis abradens Larson and Currie p. 9
2014Zapsalis abradens Williamson and Brusatte p. 12

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
RankNameAuthor
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
orderAvetheropoda
suborderCoelurosauria
Maniraptora
Paraves
infraorderDeinonychosauria
familyDromaeosauridae
subfamilyDromaeosaurinae
genusZapsalisCope 1876
speciesabradens

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.

Diagnosis
ReferenceDiagnosis
D. W. Larson and P. J. Currie 2013Dromaeosaurid with large rounded denticles (usually only on the posterior carina) on the teeth, with crown morphology characterized by a long FABL relative to CH and a straight posterior margin in lateral view relative to other dromaeosaurs and one flattened (presumably lingual) side, forming a semicircle in cross-section. There are also prominent longitudinal Paronychodon-like ridges on both medial and lateral sides.