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Stenopelix valdensis

Reptilia - Chaoyangsauridae

Taxonomy
Stenopelix valdensis was named by Meyer (1857). Its type specimen is GZG 741/2 (formerly GPI 741-1, 2), a partial skeleton, and it is a 3D body fossil. Its type locality is Harrl quarry, Bückeburg, which is in a Berriasian terrestrial sandstone in the Bückeberg Formation of Germany. It is the type species of Stenopelix.

Synonymy list
YearName and author
1857Stenopelix valdensis Meyer p. 533
1870Stenopelyx valdensis Huxley
1871Stenopelix valdensis Bunzel p. 7
1884Stenopelyx valdensis Dames p. 186–187
1887Stenopelix valdensis Koken p. 10
1890Stenopelix valdensis Zittel p. 744
1900Stenopelix valdensis Van Den Broeck p. 86
1901Stenoplyx valdensis Nopcsa p. 216
1936Stenopelix valdensis Swinton p. 572
1964Stenopelix valdensis Kuhn p. 30
1964Stenopelix valdensis Tatarinov p. 555
1967Stenopelix valdensis Charig p. 717
1969Stenopelix valdensis Schmidt p. 194
1970Stenopelix valdensis Swinton p. 200
1974Stenopelix valdensis Maryańska and Osmólska p. 47ff
1982Stenopelix valdensis Sues and Galton p. 184
1990Stenopelix valdensis Dodson p. 563
1994Stenopelix valdensis Olshevsky and Ford p. 91
1998Stenopelix valdensis Windolf p. 3
2000Stenopelix valdensis Sereno pp. 497-498 fig. 25.8
2003Stenopelix valdensis Williamson and Carr fig. 11
2004Stenopelix valdensis Maryanska et al. p. 465
2006Stenopelix valdensis Pereda Suberbiola et al. p. 228
2006Stenopelix valdensis Sullivan p. 349
2007Stenopelix valdensis Hornung and Reich p. 34
2008Stenopelix valdensis Butler et al. p. 11
2009Stenopelix valdensis Butler and Sullivan pp. 22-23 figs. 1-6
2012Stenopelix valdensis Han et al. p. 1391 fig. 14
2016Stenopelix valdensis Becerra et al. p. 564
2016Stenopelix valdensis Hübner p. 325
2018Stenopelix valdensis Bell et al. p. 29
2019Stenopelix valdensis Morschhauser et al. p. 135
2020Stenopelix valdensis Dieudonné et al.
2020Stenopelix valdensis Yang et al. p. 4

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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()
Ornithischia()
Genasauria
Cerapoda
Marginocephalia
Ceratopsia()
infraorderNeoceratopsia
familyChaoyangsauridae()
genusStenopelix
speciesvaldensis

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.

Stenopelix valdensis Meyer 1857
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Diagnosis
ReferenceDiagnosis
R. J. Butler et al. 2008The ischium of Stenopelix has the following autapomorphies: distinct bend at mid-shaft; broadest at mid-shaft and tapers anteriorly and posteriorly; blade is transversely arched distally, being ventrally convex and dorsally concave.
R. J. Butler and R. M. Sullivan 2009Small ornithischian dinosaur with the following autapomorphies: postacetabular process of ilium tapers uniformly to a rounded point; ischial blade with distinct bend at mid shaft; ischial blade is broadest at mid shaft, tapers proximally and distally; prominent proximodistally extending ridge present on the medial surface of the proximal 50% of the schaft of the ischium; distal end of ischial blade is arched dorsoventrally, with a convex lateral surface and a concave medial surface (modified from Sereno 1987).
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: gregariouso
Environment: terrestrialsubo
Locomotion: actively mobileo
Life habit: ground dwellingsubo
Diet: herbivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2005-09-15 11:08:09
Modified: 2005-09-15 13:08:09
Source: subo = suborder, o = order
References: Marsh 1875, Norman and Weishampel 1991

Age range: Late/Upper Berriasian or 145.00000 to 140.20000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Berriasian145.0 - 140.2Germany (Niedersachsen) Stenopelix valdensis (type locality: 69694)