Owenodon

Owenodon is a genus of iguanodontian dinosaur known from a partial lower jaw discovered in Early Cretaceous-age rocks of Durlston Bay, Dorset, United Kingdom, and possibly also Romania and Spain. The specimen, NHM R2998, comes from the Purbeck Limestone, dating to the middle Berriasian stage (approximately 143 million years ago).[1] It was first described by Richard Owen, who in 1874 assigned it to Iguanodon as the type specimen of the new species I. hoggii, the specific name honouring naturalist A.J. Hogg who had originally collected the fossil in 1860. The bone was damaged during initial preparation but was freed from the surrounding rock matrix by an acid bath between 1975 and 1977. David Norman and Paul Barrett subsequently transferred the species to Camptosaurus in 2002,[2] but this was challenged,[3][4] and in 2009 Peter Galton assigned the species to the new genus Owenodon, meaning "Owen's tooth", named after Sir Richard Owen. Galton interpreted the genus as an iguanodontoid more derived than Camptosaurus but less derived than Lurdusaurus.[1]

Owenodon
Temporal range: Early Cretaceous,
Holotype lower jaw
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: †Ornithischia
Clade: †Ornithopoda
Clade: †Iguanodontia
Clade: †Dryomorpha
Genus: †Owenodon
Galton, 2009
Species:
†O. hoggii
Binomial name
†Owenodon hoggii
(Owen, 1874 [originally Iguanodon hoggii])

NHMUK R8678, a partial hindlimb which preserves a pathology within the tibia and was discovered in Speeton, North Yorkshire, an isolated left dentary tooth discovered in Spain and remains found in the Cornet Bauxite of Romania have also been attributed to Owenodon.

References
  1. Galton, Peter M. (2009). "Notes on Neocomian (Late Cretaceous) ornithopod dinosaurs from England – Hypsilophodon, Valdosaurus, "Camptosaurus", "Iguanodon" – and referred specimens from Romania and elsewhere" (PDF). Revue de Paléobiologie. 28 (1): 211–273.
  2. Norman, David B.; Barrett, Paul M. (2002). "Ornithischian dinosaurs from the Lower Cretaceous (Berriasian) of England". Special Papers in Palaeontology. 68: 161–189.
  3. Carpenter, Kenneth; Wilson, Yvonne (2008). "A new species of Camptosaurus (Ornithopoda: Dinosauria) from the Morrison Formation (Upper Jurassic) of Dinosaur National Monument, Utah, and a biomechanical analysis of its forelimb". Annals of the Carnegie Museum. 76 (4): 227–263. doi:10.2992/0097-4463(2008)76[227:ansoco]2.0.co;2. S2CID 86197297.
  4. Paul, Gregory S. (2008). "A revised taxonomy of the iguanodont dinosaur genera and species" (PDF). Cretaceous Research. 29 (2): 192–216. doi:10.1016/j.cretres.2007.04.009.


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