Genus
Valid Extinct

Ajkaceratops

Osi et al. 2010
Etymology Tête cornue d’Ajka

Ajkaceratops is a genus of ceratopsian dinosaur described in 2010. It lived during the Late Cretaceous in the western Tethyan archipelago, in what is now Europe. The type species, A. kozmai, was originally described as a ceratopsian most closely related to forms in east Asia, from where its ancestors may have migrated by island-hopping. Later research, however, questioned this assignment and treated Ajkaceratops as an ornithischian of unresolved affinity. In 2026, more complete cranial remains referable to the species were described, supporting its placement as a ceratopsian.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
1
Group
Dinosaures
Herbivore Ground dwelling Terrestrial
Ajkaceratops
click to enlarge
Holotype (MTM V 2009.192.1) of Ajkaceratops kozmai .mw-parser-output .smallcaps{font-variant:small-caps}Ősi et al., 2010 (Dinosauria: Ceratopsia), fused rostral and premaxillae, in lateral view, length of scale bar = 1 cm. © Zoltan Csiki-Sava, Eric Buffetaut, Attila Ősi, Xabier Pereda-Suberbiola, Stephen L. Brusatte · CC BY 3.0 · Wikimedia
PBDB Wikipedia
Classification
Dinosauria Unranked clade
Ornithischia Unranked clade
Neornithischia Unranked clade
Pyrodontia Unranked clade
Cerapoda Unranked clade
Marginocephalia Unranked clade
Ceratopsia Suborder
Ajkaceratops Genus
Measurements
Length
1 m
Ajkaceratops kozmai
Mass
15 kg
Ajkaceratops kozmai
Fossil sites 1 geolocated sites
Distribution
Top countries
🇭🇺 Hungary
1
Geological formations
Csehbánya
1
Temporal distribution
Santonian (85.7–83.6 Ma)
1
Species (1)
Ajkaceratops kozmai 86 Ma
News 1
Ajkaceratops: Beast of the Week
Ajkaceratops: Beast of the Week
Hungary Cretaceous Late Cretaceous fossil Ajkaceratops +1
This week we will be checking out a unique dinosaur that lived in an even more unique environment.  Let's talk about Ajkaceratops kozmai!Ajkaceratops was a small plant-eating dinosaur that lived in what is now Hungary during the late Cretaceous period, about 85 million years ago.  From beak to tail it likely measured a little over 3 feet (1m) long.  The genus name translates to "Ajka Horned Face", referencing the town in Hungary near where its fossils were found.  Watercolor of Ajkaceratops by C
18/01/2026 prehistoricbeastoftheweek
Images 1
Bibliography
Original description
A. Osi, R. J. Butler, and D. B. Weishampel. 2010. A Late Cretaceous ceratopsian dinosaur from Europe with Asian affinities. Nature 465:466-468 DOI ↗
Bibliography (1)
A. Osi, R. J. Butler, and D. B. Weishampel. 2010. A Late Cretaceous ceratopsian dinosaur from Europe with Asian affinities. Nature 465:466-468 DOI ↗