PBDB Taxon

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Stenopelix

Reptilia - Chaoyangsauridae

Taxonomy

Stenopelix was named by Meyer (1857). Its type is Stenopelix valdensis. It is the type genus of Stenopelyxidae.

It was assigned to Iguanodontidae by Huxley (1870); to Scelidosauridae by Cope (1869), Zittel (1890); to Ornithopoda by Mansel-Pleydell (1902); to Ceratopsidae by Huene (1909); to Stegosauridae by Nopcsa (1901), von Zittel (1911); to Hypsilophodontinae by Nopcsa (1928); to Hypsilophodontidae by Tatarinov (1964), Romer (1966), Swinton (1970); to Psittacosauridae by Romer (1956), Kuhn (1964), Charig (1967), Schmidt (1969), Galton (1972), Thulborn (1974); to Pachycephalosauridae by Maryańska and Osmólska (1974), Wall and Galton (1979), Molnar (1980); to Ceratopsia by Lull (1924), Sues and Galton (1982), Carroll (1988); to Stenopelicidae by Olshevsky and Ford (1994); to Ornithischia by Sullivan (2006); to Pachycephalosauria by Sereno (1997), Sereno (1998), Sereno (1999), Williamson and Carr (2003), Maryanska et al. (2004), Williamson and Carr (2006), Pereda Suberbiola et al. (2006), Butler et al. (2007); to Pachycephalosauria by Sereno (2000), Butler et al. (2008); to Marginocephalia by Dodson (1990), Norman (1997), Buffetaut (1997), Butler and Sullivan (2009); to Ceratopsia by Han et al. (2012); to Neoceratopsia by Morschhauser et al. (2019); and to Chaoyangsauridae by Yu et al. (2020).

Species

S. valdensis (type species)

Synonymy list

Year	Name and author
1857	Stenopelix Meyer p. 533
1869	Stenopelix Cope p. 91
1870	Stenopelyx Huxley p. 35
1890	Stenopelix Zittel p. 743
1901	Stenoplyx Nopcsa p. 216
1902	Stenopelix Mansel-Pleydell p. lxxxvi
1909	Stenopelix Huene p. 17
1911	Stenopelix von Zittel p. 294
1924	Stenopelix Lull p. 266
1928	Stenopelix Nopcsa p. 184
1956	Stenopelix Romer p. 631
1964	Stenopelix Kuhn p. 30
1964	Stenopelix Tatarinov p. 555
1966	Stenopelix Romer p. 370
1967	Stenopelix Charig p. 717
1969	Stenopelix Schmidt p. 198
1970	Stenopelix Swinton p. 200
1972	Stenopelix Galton p. 466
1974	Stenopelix Maryańska and Osmólska p. 47
1974	Stenopelix Thulborn p. 172
1979	Stenopelix Wall and Galton p. 1184
1980	Stenopelix Molnar p. 137
1982	Stenopelix Sues and Galton pp. 188-189
1988	Stenopelix Carroll
1990	Stenopelix Dodson p. 563
1994	Stenopelix Olshevsky and Ford p. 91
1997	Stenopelix Buffetaut p. 214
1997	Stenopelix Norman p. 785
1997	Stenopelix Sereno p. 440 fig. 2
1998	Stenopelix Sereno p. 68
1999	Stenopelix Sereno p. 2138 fig. 2
2000	Stenopelix Sereno pp. 497-498 fig. 25.8
2003	Stenopelix Williamson and Carr fig. 11
2004	Stenopelix Maryanska et al. p. 465
2006	Stenopelix Pereda Suberbiola et al. p. 228
2006	Stenopelix Sullivan p. 349
2006	Stenopelix Williamson and Carr pp. 325-326 fig. 2
2007	Stenopelix Butler et al. p. S18
2008	Stenopelix Butler et al. pp. 22-23 figs. 2-4
2009	Stenopelix Butler and Sullivan p. 22
2012	Stenopelix Han et al. p. 1391 fig. 14
2019	Stenopelix Morschhauser et al. p. 129 fig. 10
2020	Stenopelix Yu et al. p. 5

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()

Rank	Name	Author
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Ornithischia	()
—	Genasauria
—	Cerapoda
—	Marginocephalia
—	Ceratopsia	()
infraorder	Neoceratopsia
family	Chaoyangsauridae	()
genus	Stenopelix

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.

G. †Stenopelix Meyer 1857

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†Stenopelix valdensis Meyer 1857

Diagnosis

Reference	Diagnosis
R. J. Butler and R. M. Sullivan 2009	As for type and only known species.

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, Kiessling 2004

Age range: Late/Upper Berriasian or 139.10000 to 137.05000 Ma

Collections: one only

Time interval	Ma	Country or state	Original ID and collection number
Late/Upper Berriasian	139.1 - 137.05	Germany (Niedersachsen)	S. valdensis (69694)