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Galton, 1977
Valdosaurus skeleton
Valdosaurus by S. M. Clabby
Valdosaurus femur
Partial Valdosaurus femur
Valdosaurus toe (digit iv)
Valdosaurus foot


Weald lizard
4 metre (13 ft)

Dryosauroidea Norman, 1984

Valdosaurus caniliculatus Galton, 197

Wessex Formation

A small ornithopod dinosaur, Valdosaurus had a gazelle-like lifestyle, feeding on the ferns and cycads, running away when attacked by predators. It was not always successful at this, as one specimen was found in association with Eotyrannus teeth and bones.
(More info can be found at DinoWight Palaeoecology)

Brighstone Bay, Plant debris beds. See Eotyrannus.

Description of Material

(Don't understand all the terminology? visit the Glossary)

The main body of Valdosaurus's ilium is low, with a wide brevis shelf, and the obturator process of the ischium is placed proximally. The femur has a pendant fourth trochanter well on the proximal half of the shaft, a deep pit medial to the fourth trochanter set well anteriorly to the shaft, a rod-like lesser trochanter separated by a deep grove from the greater trochanter, the distal end has sub-square medial edges and a deep anterior intercondylar groove that may be partly overhung laterally. The dentary has 15 teeth. The teeth are similar to those of Iguanodon, but are less leaf shaped.

Valdosaurus very similar to Hypsilophodon and Iguanodon, but can be distinguished from them as it has a curved femur, whereas Iguanodon and Hypsilophodon have straight femur shafts. The cleft separating the anterior trochanter from the greater trochanter is deeper than it is in either Iguanodon or Hypsilophodon. The fourth trochanter is more proximally situated than in Iguanodon. It had a shorter pes than Hypsilophodon, and only three functional toes.

Material is rare, so please report it if you find some...

How do I know if I've found a bone?

Further Information.
Valdosaurus - Wikipedia, the free encyclopedia
Dinosaur Isle - Valdosaurus
References (not cited above)
Galton and Taquet, 1982
Naish and Martill, 2001a

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