PBDB Taxon

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

Dacentrurus

Reptilia - Stegosauridae

Taxonomy

Dacentrurus was named by Lucas (1902). It is the type genus of Dacentruridae.

It was synonymized subjectively with Omosaurus by von Zittel (1911) and Lull (1912); it was synonymized subjectively with Priodontosaurus by Romer (1966).

It was assigned to Stegosaurinae by Romer (1956); to Stegosauria by Lucas (1902) and Delair (1960); to Dacentruridae by Olshevsky and Ford (1993) and Blows (2001); to Stegosauridae by Hennig (1915), Tatarinov (1964), Kuhn (1964), Charig (1967), Delair (1973), Thulborn (1975), Galton (1985), Carroll (1988), Galton (1990), Galton (1991), Casanovas-Cladellas et al. (1995), Sereno (1998), Sereno (1999), Carpenter et al. (2001), Galton and Upchurch (2004), Maidment et al. (2006), Escaso et al. (2007), Escaso et al. (2007), Maidment et al. (2008), Naish and Martill (2008), Mateus and Milàn (2010) and Cobos and Gascó (2013); and to Dacentrurinae by Mateus et al. (2009), Ulansky (2014), Costa and Mateus (2019) and Allain et al. (2022).

Species

D. armatus, Omosaurus lennieri

Synonyms

Omosaurus was named by Owen (1875). It is the type genus of Omosauridae.

It was synonymized subjectively with Stegosaurus by Zittel (1890), Anonymous (1897), Gadow (1901), Mansel-Pleydell (1902), Hay (1902) and Piveteau (1926); it was synonymized subjectively with Priodontosaurus by Romer (1966); it was replaced with Dacentrurus by Lucas (1902), Hennig (1915), Romer (1956), Delair (1960), Delair (1960), Tatarinov (1964), Kuhn (1964), Thulborn (1975), Galton (1990), Blows (2001), Galton and Upchurch (2004) and Maidment et al. (2008).

It was assigned to Stegosauria by Quenstedt (1882); to Scelidosauria by Seeley (1892); to Stegosauria by Hulke (1887) and Winkler (1893); to Omosauridae by Lydekker (1888) and Huene (1909); to Ornithopoda by Sauvage (1914); to Saurischia by Kuhn (1939); to Stegosauridae by Marsh (1880), Sauvage (1882), Dollo (1884), Marsh (1884), Marsh (1885), Marsh (1895), Marsh (1896), Nopcsa (1901), von Zittel (1911), Gilmore (1914), Lull (1924), Chakravarti (1934) and Swinton (1970); and to Stegosaurinae by Nopcsa (1928), Hoffstetter (1957), Hoffstetter and Brun (1958), Dong et al. (1983) and Zhou (1986).
Omosaurus lennieri was named by Nopcsa (1911). Its type specimen is MHNH A, a partial skeleton, and it is a 3D body fossil. Its type locality is La Brière, Octeville beach, which is in a Kimmeridgian marine lime mudstone in the Argiles d'Octeville Formation of France.

It was recombined as Dacentrurus lennieri by Hennig (1915), Kuhn (1964), Thulborn (1975), Galton and Boiné (1980), Galton (1983), Galton (1990), Buffetaut et al. (1991), Olshevsky and Ford (1993), Casanovas-Cladellas et al. (1995), Ulansky (2014) and Ulansky (2014); it was synonymized subjectively with Omosaurus armatus by Galton (1982), Galton (1982) and Galton (1991); it was synonymized subjectively with Dacentrurus armatus by Galton (1990), Pereda Suberbiola and Galton (2001), Galton and Upchurch (2004), Escaso et al. (2007) and Ruiz-Omeñaca et al. (2013); it was considered a nomen dubium by Maidment et al. (2008).

Synonymy list

Year	Name and author
1875	Omosaurus Owen
1880	Omosaurus Marsh p. 259
1882	Omosaurus Quenstedt p. 188
1882	Omosaurus Sauvage p. 35
1884	Omosaurus Dollo p. 298
1884	Omosaurus Marsh p. 68
1885	Omosaurus Marsh p. 764
1887	Omosaurus Hulke
1888	Omosaurus Lydekker p. 177
1892	Omosaurus Seeley
1893	Omosaurus Winkler p. 104
1895	Omosaurus Marsh
1896	Omosaurus Marsh p. 242
1901	Omosaurus Nopcsa p. 214
1902	Dacentrurus Lucas p. 435
1909	Omosaurus Huene p. 17
1911	Omosaurus lennieri Nopcsa p. 22
1911	Omosaurus von Zittel p. 294
1914	Omosaurus Gilmore p. 101
1914	Omosaurus Sauvage p. 255
1915	Dacentrurus Hennig p. 11
1915	Dacentrurus lennieri Hennig p. 12
1924	Omosaurus Lull p. 242
1928	Omosaurus Nopcsa p. 185
1934	Omosaurus Chakravarti p. 78
1939	Omosaurus Kuhn p. 113
1951	Omosaurus lennieri Lapparent and Zbyszewski p. 1127
1956	Dacentrurus Romer p. 634
1957	Omosaurus Hoffstetter p. 538
1957	Omosaurus lennieri Lapparent and Zbyszewski p. 51
1958	Omosaurus Hoffstetter and Brun pp. 72-73
1960	Dacentrurus Delair p. 87
1964	Dacentrurus Kuhn p. 34
1964	Dacentrurus lennieri Kuhn p. 34
1964	Dacentrurus Tatarinov p. 573
1967	Dacentrurus Charig p. 715
1967	Omosaurus lennieri Lapparent p. 11
1970	Omosaurus Swinton p. 241
1973	Dacentrurus Delair p. 5
1975	Dacentrurus lennieri Thulborn p. 89
1975	Dacentrurus Thulborn p. 134
1978	Omosaurus lennieri Rioult p. 28
1980	Dacentrurus lennieri Galton and Boiné p. 31
1983	Omosaurus Dong et al. p. 137
1983	Dacentrurus lennieri Galton p. 11
1985	Dacentrurus Galton p. 213 figs. 2-14
1986	Omosaurus Zhou p. 35
1988	Dacentrurus Carroll
1990	Dacentrurus Galton
1990	Dacentrurus lennieri Galton p. 186
1991	Dacentrurus lennieri Buffetaut et al. p. 26
1991	Dacentrurus Galton pp. 317-318
1993	Dacentrurus Olshevsky and Ford
1993	Dacentrurus lennieri Olshevsky and Ford
1995	Dacentrurus Casanovas-Cladellas et al. p. 282
1995	Dacentrurus lennieri Casanovas-Cladellas et al. p. 282
1998	Dacentrurus Sereno p. 67 fig. 5
1999	Dacentrurus Sereno p. 2138 fig. 2
2001	Dacentrurus Blows p. 137
2001	Dacentrurus Carpenter et al. p. 73 fig. 3.14
2004	Dacentrurus Galton and Upchurch p. 344
2006	Dacentrurus Maidment et al. p. 951 fig. 8
2007	Dacentrurus Escaso et al. p. 158
2008	Dacentrurus Maidment et al. p. 390 fig. 11
2008	Dacentrurus Naish and Martill p. 616
2009	Dacentrurus Mateus et al.
2010	Dacentrurus Mateus and Milàn p. 254
2013	Dacentrurus Cobos and Gascó p. 18
2014	Dacentrurus Ulansky p. 7
2014	Dacentrurus lennieri Ulansky p. 7
2018	Omosaurus lennieri Lepage et al. p. 39
2019	Dacentrurus Costa and Mateus p. 18
2022	Dacentrurus Allain et al.

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
subclass	Eureptilia	()

Rank	Name	Author
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Ornithischia	()
—	Genasauria
—	Thyreophora	()
—	Stegosauria	()
family	Stegosauridae
subfamily	Dacentrurinae	()
genus	Dacentrurus

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. †Dacentrurus Lucas 1902

show all | hide all

†Dacentrurus armatus Marsh 1877

Invalid names: Omosaurus Owen 1875 [replaced], Omosaurus lennieri Nopcsa 1911 [nomen dubium]

Diagnosis

Reference	Diagnosis
P. M. Galton 1991	As for Dacentrurus armatus (Owen, 1875), given below.
F. Costa and O. Mateus 2019	As for type and only known species.

Measurements

No measurements are available

Composition:

hydroxyapatiteo

Entire body:

yesg

Adult length:

10 to < 100o

Adult width:

1.0 to < 10o

Adult height:

1.0 to < 10o

Maximum body mass:

3000 kgg

Minimum body mass:

1000 kgg

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:

2005-08-25 06:09:01

Modified:

2005-08-25 08:09:01

Source: g = genus, o = order

References: Marsh 1875, Peczkis 1995

Age range: base of the Late/Upper Kimmeridgian to the top of the Early/Lower Barremian or 155.70000 to 125.45000 Ma

Collections (25 total)

Time interval	Ma	Country or state	Original ID and collection number
Kimmeridgian	157.3 - 152.1	Portugal (Centro)	Omosaurus lennieri (49244)
Kimmeridgian - Tithonian	157.3 - 145.0	Spain (Valencia)	D. sp., Stegosauridae indet. (39423)
Kimmeridgian - Tithonian	157.3 - 145.0	Spain (Aragon)	D. sp. (157885 157886)
Kimmeridgian - Tithonian	157.3 - 145.0	Spain (Teruel)	D. armatus (146261) D. sp. (91396 227113)
Early/Lower Kimmeridgian - Late/Upper Kimmeridgian	155.7 - 150.8	Portugal (Centro)	Omosaurus lennieri (49215)
Late/Upper Kimmeridgian	155.7 - 150.8	France (Nord-Pas-de-Calais)	Omosaurus sp. (67107)
Late/Upper Kimmeridgian	155.7 - 150.8	France (Haute-Normandie)	D. lennieri (47423) Iguanodon bernissartensis (47420)
Late/Upper Kimmeridgian	155.7 - 150.8	Portugal (Centro)	Iguanodon prestwichi (75968) Omosaurus armatus (49221 88192) Omosaurus lennieri (219236)
Late/Upper Kimmeridgian	155.7 - 150.8	United Kingdom (England)	Omosaurus armatus (47421)
Late/Upper Kimmeridgian - Early/Lower Tithonian	155.7 - 145.0	Portugal (Centro)	Omosaurus armatus, Omosaurus lennieri (49219)
Late/Upper Kimmeridgian - Tithonian	155.7 - 145.0	Spain (Valencia)	D. armatus (59089 61364)
Late/Upper Kimmeridgian - Tithonian	155.7 - 145.0	Spain (Aragón)	Stegosauria indet. (68019)
Middle Tithonian	150.8 - 145.0	Portugal (Centro)	D. armatus (74502)
Middle Tithonian - Late/Upper Tithonian	150.8 - 145.0	Portugal (Centro)	Omosaurus lennieri (49253)
Berriasian	145.0 - 139.8	France (Poitou-Charentes)	D. sp. (142093)
Late/Upper Hauterivian - Early/Lower Barremian	136.4 - 125.45	Spain (Castilla y Leon)	Stegosauria indet. (61407)
Early/Lower Barremian	130.0 - 125.45	Spain (Aragon)	D. sp. (59075)