PBDB Taxon

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

Monocloniinae (disused)

Osteichthyes - Ceratopsidae

Taxonomy

Monocloniinae was named by Nopcsa (1923). Its type is Monoclonius.

It was assigned to Ceratopsidae by Nopcsa (1923), Nopcsa (1928), Nopcsa (1929), Huene (1948), Huene (1950), Tatarinov (1964), Kuhn (1966).

Synonymy list

Year	Name and author
1923	Monocloniinae Nopcsa p. 126
1928	Monocloniinae Nopcsa p. 185
1929	Monocloninae Nopcsa p. 69ff
1948	Monocloniinae Huene p. 95
1950	Monocloniinae Huene p. 351
1964	Monocloniinae Tatarinov p. 582
1966	Monocloniinae Kuhn p. 106

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
class	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	()
family	Ceratopsidae
subfamily	Monocloniinae
subfamily	Monocloniinae

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.

Subfm. †Monocloniinae Nopcsa 1923

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Diagnosis

Reference	Diagnosis
B. F. Nopcsa 1928	nasal horn larger than frontal horns
F. v. Huene 1948	Nasal horn longer than prefrontal horns.