PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Huayangosauridae (disused)

Reptilia - Huayangosauridae

Taxonomy

Huayangosauridae was named by Dong et al. (1982). Its type is Huayangosaurus. It was considered monophyletic by Maidment et al. (2008).

It was assigned to Stegosauria by Olshevsky and Ford (1993) and Maidment et al. (2008); to Stegosauria by Ulansky (2014); and to Stegosauria by Galton (1990), Carpenter et al. (2001), Blows (2001), Galton and Upchurch (2004) and Tumanova and Alifanov (2018).

Synonymy list

Year	Name and author
1982	Huayangosauridae Dong et al.
1990	Huayangosauridae Galton
1993	Huayangosauridae Olshevsky and Ford
2001	Huayangosauridae Blows p. 137
2001	Huayangosauridae Carpenter et al. p. 73
2004	Huayangosauridae Galton and Upchurch p. 344
2008	Huayangosauridae Maidment et al. p. 390 fig. 11
2014	Huayangosauridae Ulansky p. 4
2018	Huayangosauridae Tumanova and Alifanov p. 1771

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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

Rank	Name	Author
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Ornithischia	()
—	Genasauria
—	Thyreophora	()
—	Stegosauria	()
family	Huayangosauridae	Dong et al. 1982
family	Huayangosauridae	Dong et al. 1982

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.

Fm. †Huayangosauridae Dong et al. 1982

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Diagnosis

Reference	Diagnosis
S. C. R. Maidment et al. 2008	All stegosaurs more closely related to Huayangosaurus than to Stegosaurus. Unambiguous synapomorphies: • Anterior iliac process projects at an angle roughly parallel to the parasagittal plane (autapomorphic reversal) • Anterior iliac process strongly angled ventrally in lateral view (convergent in clade B stegosaurs and Euoplocephalus)

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:

terrestrialo

Locomotion:

actively mobileo

Life habit:

ground dwellingo

Diet:

herbivoreo

Reproduction:

oviparouso

Dispersal:

direct/internalo

Dispersal 2:

mobileo

Created:

2004-12-14 12:50:52

Modified:

2004-12-14 14:50:52

Source: o = order

Reference: Marsh 1875

Collections

No collection or age range data are available