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Taxon:
Family †"
Chaoyoungosauridae
"
Zhao, 1983, nom. inval.
(dinosaur)
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Hierarchy
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Entity:
†Marginocephalia (Clade)
..†Ceratopsia (Infraorder)
..[†Ceratopsia] (Clade)
..†Pachycephalosauria (Infraorder)
..[†Pachycephalosauria] (Clade)
..[†Chaoyoungosauridae] (Family)
....[†Chaoyoungosaurus] (Genus)
....[†Xuanhuasaurus] (Genus)
Attributes
Unavailable family-group name: not based upon an available/valid generic name (nom. inval.) [ICZN, 1999: Art. 11.7.1.1]
Ref:
S.J. Brands (comp.), 1989-present.
Syst. Nat. 2000
: 6 Jun 2025.
Types
Type
:
†
Chaoyoungosaurus
(Genus)
Zhao & Cheng, 1983, nom. nud.
Variants
Available name
:
†
Chaoyangsauridae
(Family)
Zhao, Cheng, & Xu, 1999
Ref:
Wikimedia
: Chaoyangsauridae, 5 May 2025; 6 Jun 2025.
[inferred]
©2004-2025 Universal Taxonomic Services
Last updated:
21 Sep 2025