PBDB Taxon

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

Ceratosauridae

Reptilia - Ceratosauridae

Taxonomy

Ceratosauridae was named by Marsh (1884).

It was synonymized subjectively with Megalosauridae by Lydekker (1888) and Steel (1970).

It was assigned to Cerastosauria by Marsh (1884); to Saurischia by Arldt (1909) and Huene (1909); to Therophagi by Jaekel (1914); to Megalosauroidae by Hay (1930); to Coelurosauria by Kuhn (1946); to Coelurosauria by Huene (1926), Huene (1929), Stromer (1934) and Huene (1948); to Deinodontoidea by Tatarinov (1964); to Coeluria by Kuhn (1966); to Megalosauroidea by Maleev (1968); to Carnosauria by Barsbold (1983) and Russell (1984); to Neotheropoda by Bakker (1986); to Theropoda by Vetter (1884), Marsh (1884), Gilmore (1920) and Carroll (1988); to Ceratosauria by Marsh (1885), Marsh (1895), Marsh (1896) and Paul (1988); to Theropoda by Dollo (1884), Zittel (1890), Winkler (1893), Mansel-Pleydell (1902), Hay (1902) and Chure et al. (2006); to Ceratosauroidea by Bonaparte et al. (1990), Bonaparte (1991) and Mateus et al. (2006); to Ceratosauria by Rauhut (2004) and Hendrickx and Mateus (2014); and to Etrigansauria by Delcourt (2018).

Subtaxa

Ceratosaurus roechlingi, Fosterovenator

Synonyms

Labrosauridae was named by Marsh (1882). Its type is Labrosaurus.

It was reranked as the subfamily Labrosauridae by Nopcsa (1901); it was synonymized subjectively with Megalosauridae by Hay (1902); it was synonymized subjectively with Ceratosauridae by Kuhn (1946) and Kuhn (1966); it was synonymized subjectively with Megalosaurinidae by Lydekker (1888) and Steel (1970).

It was assigned to Theropoda by Dollo (1884); to Megalosauridae by Nopcsa (1901); to Theropoda by Sauvage (1882), Marsh (1882), Vetter (1884), Marsh (1884), Marsh (1884), Marsh (1885), Marsh (1895), Marsh (1896) and von Zittel (1911); to Megalosauroidea by Nopcsa (1928); and to Megalosauroidae by Hay (1930).
Ceratosaurus roechlingi was named by Janensch (1925). Its type specimen is MB.R.2162, a set of vertebrae (Partial middle caudal vertebral centrum), and it is a 3D body fossil. Its type locality is Tendaguru quarry MW, which is in a Tithonian estuary/bay marl in the Tendaguru Formation of Tanzania.

It was considered a nomen dubium by Rowe and Gauthier (1990), Tykoski and Rowe (2004), Mateus (2006), Carrano and Sampson (2008) and Rauhut (2011).

Synonymy list

Year	Name and author
1882	Labrosauridae Marsh
1882	Labrosauridae Sauvage p. 36
1884	Ceratosauridae Dollo p. 298
1884	Labrosauridae Dollo p. 298
1884	Ceratosauridae Marsh p. 69
1884	Labrosauridae Marsh p. 69
1884	Ceratosauridae Marsh p. 330
1884	Labrosauridae Marsh p. 337
1884	Ceratosauridae Vetter p. 363
1884	Labrosauridae Vetter p. 363
1885	Labrosauridae Marsh p. 764
1885	Ceratosauridae Marsh p. 765
1890	Ceratosauridae Zittel p. 727
1893	Ceratosauridae Winkler p. 108
1895	Ceratosauridae Marsh
1895	Labrosauridae Marsh
1896	Labrosauridae Marsh p. 239
1896	Ceratosauridae Marsh p. 240
1901	Labrosauridae Nopcsa p. 195
1902	Ceratosauridae Hay p. 493
1902	Ceratosauridae Mansel-Pleydell p. lxxviii
1909	Ceratosauridae Arldt p. 262
1909	Ceratosauridae Huene p. 15
1911	Labrosauridae von Zittel p. 280
1914	Ceratosauridae Jaekel p. 197
1920	Ceratosauridae Gilmore p. 76
1925	Ceratosaurus roechlingi Janensch pp. 58-65 figs. 19-20, Pl. 8, fig. 2-4
1926	Ceratosauridae Huene p. 98
1928	Labrosauridae Nopcsa p. 184
1929	Ceratosauridae Huene p. 270
1930	Ceratosauridae Hay p. 175
1930	Labrosauridae Hay p. 184
1934	Ceratosauridae Stromer p. 80
1939	Ceratosaurus roechlingi Kuhn p. 42
1946	Ceratosauridae Kuhn p. 65
1948	Ceratosauridae Huene p. 89
1964	Ceratosauridae Tatarinov p. 537
1966	Ceratosauridae Kuhn p. 93
1968	Ceratosauridae Maleev p. 95
1970	Ceratosaurus roechlingi Steel p. 30
1974	Ceratosaurus roechlingi Molnar p. 1011
1983	Ceratosauridae Barsbold p. 95
1984	Ceratosauridae Russell p. 28
1986	Ceratosauridae Bakker p. 460
1988	Ceratosauridae Carroll
1988	Ceratosauridae Paul p. 275
1990	Ceratosauridae Bonaparte et al. p. 40
1991	Ceratosauridae Bonaparte p. 22
2004	Ceratosauridae Rauhut p. 895
2006	Ceratosauridae Chure et al. p. 236
2006	Ceratosauridae Mateus et al. p. 123
2014	Ceratosauridae Hendrickx and Mateus
2018	Ceratosauridae Delcourt p. 3

Is something missing? Join the Paleobiology Database and enter the data

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	()
—	Theropoda	()
—	Neotheropoda
—	Averostra	Paul 2002
suborder	Ceratosauria	()
family	Ceratosauridae
family	Ceratosauridae

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. †Ceratosauridae Marsh 1884

show all | hide all

G. †Fosterovenator Dalman 2014

hide

†Fosterovenator churei Dalman 2014

Invalid names: Ceratosaurus roechlingi Janensch 1925 [nomen dubium], Labrosauridae Marsh 1882 [synonym]

Diagnosis

Reference	Diagnosis
K. A. v. Zittel 1890	asenbeine mit knöchernem rauhem Kamm. Halswirbel vorn eben, hinten tief ausgehöhlt, übrige Wirbel amphicöl. Schambeine schlank. Sämmtliche Beckenknochen im Acetabulum verschmolzen. Astragalus mit aufsteigendem Fortsatz. Metatarsalia seitlich- zusammengewachsen. Hautknochen in der Halsregion vorhanden.
B. F. Nopcsa 1901 (Labrosauridae)	Az állkapcson elöl nincsenek fogak, az összes csigolyák convexoconcavok; pubes erös, interpubessel, távolabbi végei egyesítve. Astragalus processus ascendenssel. [There are no teeth in front of the jaw, all vertebrae are convexoconcave; pubes strong, with interpubes, the distal ends combined. Astragalus with process ascendens.]
B. F. Nopcsa 1928 (Labrosauridae)	incompletely known; dentition incomplete
F. v. Huene 1948	Nose and prefrontals with horns; 9 cervicals, 14 dorsals, 5 coalesced sacrals, partly reduced; pubis and ischium have shoe-like process; anterior cerebral and optic regions enlarged. Jurassic.