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Stenopterygius quadriscissus

Reptilia

Taxonomy
Stenopterygius quadriscissus was named by Quenstedt (1858) [Lectotype specimen given]. It is not extant. Its type specimen is GPIT 43/0219-1. Its type locality is Holzmaden, Univ Löwen, epsilon II/3, which is in a Toarcian marine shale in the Posidonia Shale Formation of Germany.

Sister species lacking formal opinion data

Synonymy list
YearName and author
1858Stenopterygius quadriscissus Quenstedt
1922Stenopterygius quadriscissus von Huene p. 40
2000Stenopterygius quadriscissus Maisch and Matzke p. 75
2003Stenopterygius quadriscissus McGowan and Motani
2008Stenopterygius quadriscissus Maisch
2010Stenopterygius quadriscissus Maisch
2013Stenopterygius quadriscissus Fischer et al.
2014Stenopterygius quadriscissus Arkhangelsky and Zverkov
2016Stenopterygius quadriscissus Ji et al. p. 12

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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
RankNameAuthor
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Ichthyosauromorpha
Ichthyosauriformes
Ichthyopterygia(Owen 1840)
Eoichthyosauria
Ichthyosauria(de Blainville 1835)
Thunnosauria
genusStenopterygiusJaekel 1904
speciesquadriscissusQuenstedt 1858

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.

Stenopterygius quadriscissus Quenstedt 1858
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Diagnosis
ReferenceDiagnosis
M. W. Maisch and A. T. Matzke 2000"Juveniles with numerous small teeth, adults lack dentition largely or entirely, snout long and robust, always longer than 2/3 skull length, often longer than 2/3 lower jaw length, orbit moderately large, high-crowned skull profile, maxilla does not reach naris, postfrontal and frontal in contact, head smaller than 1/3 preflexural length, forefins moderately large, mostly about 2/3 lower jaw length, body in adults stout with very long ribs."