PBDB Taxon

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

Mochlodon

Osteichthyes

Taxonomy

Mochlodon was named by Seeley (1881). Its type is Iguanodon suessii.

It was synonymized subjectively with Rhabdodon by Nopcsa (1915), Nopcsa (1915), Nopcsa (1915), Nopcsa (1915), Nopcsa (1923), Nopcsa (1926), Huene (1934), Huene (1934), Swinton (1936), Romer (1956), Tatarinov (1964), Kuhn (1964), Romer (1966), McIntosh (1981), Brinkmann (1988), Norman and Weishampel (1990), Weishampel et al. (1991), Sereno (1997), Norman (2004); it was considered a nomen dubium by Sachs and Hornung (2006).

It was assigned to Dinosauria by Seeley (1881); to Ornithopoda by Marsh (1896); to Hypsilophodontidae by Nopcsa (1901); to Camptosauridae by Huene (1909), von Zittel (1911); to Kalodontidae by Nopcsa (1902), Huene (1927); to Dryosauridae by Milner and Norman (1984); to Hypsilophodontidae by Norman (1984); to Iguanodontidae by Zittel (1890), Van Den Broeck (1900), Campbell (1966), Charig (1967), Weishampel and Weishampel (1983), Rich et al. (1983), Rich and Rich (1985); to Rhabdodontidae by Osi et al. (2012), Dieudonné et al. (2016), Madzia et al. (2018), Herne et al. (2019), Bell et al. (2019), Párraga and Prieto-Márquez (2019), Dieudonné et al. (2020), Verdú et al. (2021); and to Rhabdodontoidea by Czepiński and Madzia (2025).

Species

M. priscus, M. vorosi

Synonymy list

Year	Name and author
1881	Mochlodon Seeley p. 620
1890	Mochlodon Zittel p. 762
1896	Mochlodon Marsh p. 226
1900	Mochlodon Van Den Broeck p. 92
1901	Mochlodon Nopcsa p. 209
1902	Mochlodon Nopcsa p. 151
1909	Mochlodon Huene p. 16
1911	Mochlodon von Zittel p. 289
1927	Mochlodon Huene p. 267
1966	Mochlodon Campbell p. 165
1967	Mochlodon Charig p. 716
1983	Mochlodon Rich et al. p. 287
1983	Mochlodon Weishampel and Weishampel p. 44
1984	Mochlodon Milner and Norman p. 147
1984	Mochlodon Norman p. 342
1985	Mochlodon Rich and Rich p. 647
2012	Mochlodon Osi et al. p. 6
2016	Mochlodon Dieudonné et al. p. 26–27 fig. 14
2018	Mochlodon Madzia et al. p. 973 fig. 4
2019	Mochlodon Bell et al. p. 14
2019	Mochlodon Herne et al. p. 574 fig. 25
2019	Mochlodon Párraga and Prieto-Márquez p. 254
2020	Mochlodon Dieudonné et al.
2021	Mochlodon Verdú et al. p. 10 fig. 9
2025	Mochlodon Czepiński and Madzia p. 7

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
class	Osteichthyes
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida

Rank	Name	Author
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Ornithischia	()
—	Genasauria
—	Cerapoda
—	Ornithopoda	()
—	Clypeodonta
—	Iguanodontia	()
—	Rhabdodontomorpha
—	Rhabdodontoidea
genus	Mochlodon

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. †Mochlodon Seeley 1881

show all | hide all

†Mochlodon priscus Matheron 1869

†Mochlodon vorosi Osi et al. 2012

†Rhabdodon suessi Bunzel 1871

Diagnosis

Reference	Diagnosis
A. Osi et al. 2012	Small-bodied rhabdodontid dinosaur with a total body length of approximately 1.5–2 meters distinguished from Rhabdodon and Zalmoxes on the basis of the following unique combination of characters (autapomorphies marked with an asterisk): mandibular symphysis is only slightly curved medially; dorsal margin of the symphyseal region has a deep and caudally wider groove; depression (depth ranging from 1–3 mm) on the lateral wall of the caudal part of the dentary, just below the coronoid process, that becomes more obvious in larger individuals; *the dorsal edge of the sympysis in lateral view is directed straight rostrally or slightly rostroventrally (in Mochlodon suessi), parallel to the long axis of the dentary

Measurements

part	N	mean
femur diameter	1	10.0
radius diameter	1	7.00
tibia diameter	1	13.0

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:

herbivoresubo

Reproduction:

oviparouso

Dispersal:

direct/internalo

Dispersal 2:

mobileo

Created:

2009-01-03 20:40:05

Modified:

2009-01-03 22:40:05

Source: subo = suborder, o = order

References: Kiessling 2004, Benton 1983, Marsh 1875

Age range: base of the Santonian to the top of the Late/Upper Maastrichtian or 85.70000 to 66.00000 Ma

Collections (4 total)

Time interval	Ma	Country or state	Original ID and collection number
Santonian	85.7 - 83.6	Hungary (Veszprém)	M. vorosi (48722)
Early/Lower Campanian	83.6 - 72.2	Austria (Niederosterreich)	Iguanodon suessi (48720)
Early/Lower Maastrichtian	72.2 - 66.0	Romania (Hunedoara)	M. sp. (59410)
Late/Upper Maastrichtian	72.2 - 66.0	Romania (Salaj)	M. suessi (115075)