Jeholosaurus

Jeh-hoe-lo-sore-us.
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Benjamin Gutierrez

Vertebrate Paleontologist

Benjamin Gutierrez is a leading expert on dinosaurs, particularly the mighty theropods. His fieldwork in South America has uncovered new species and provided insights into dinosaur social structures.

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Name

Jeholosaurus (Jehol lizard).

Phonetic

Jeh-hoe-lo-sore-us.

Named By

Xu et al - 2000.

Classification

Chordata, Reptilia, Dinosauria, Ornithischia, Cerapoda, Ornithopoda.

Diet

Possibly omnivorous.

Species

J. shangyuanensis

Size

Holotype 71 centimetres long, but this is of a juvenile. Adult size uncertain.

Known locations

China, Liaoning Province - Yixian Formation.

Time Period

Barremian of the Cretaceous.

Fossil representation

Partial remains of two juvenile/subadult individuals.

In Depth

       The discovery of Jeholosaurus raised some eyebrows as even though it is an ornithiscian dinosaur with distinctively herbivorous teeth towards the back of its mouth, the frontal teeth look that those of a carnivore. This has brought forth the hypothesis that Jeholosaurus was an omnivore, either hunting smaller animals or scavenging carrion to supplement its diet of plants. The only other possibility is that Jeholosaurus specialised in eating plants that required a special carnivore like dentition.

Further Reading

– A primitive ornithopod from the Early Cretaceous Yixian Formation of Liaoning. – Vertebrata PalAsiatica 38(4):318-325. – X. Xu, X.-L. Wang & H.-L. You – 2000. – Postcranial anatomy of Jeholosaurus shangyuanensis (Dinosauria, Ornithischia) from the Lower Cretaceous Yixian Formation of China. – Journal of Vertebrate Paleontology 32 (6): 1370–1395. – Feng-Lu Han, Paul M. Barrett, Richard J. Butler & Xing Xu – 2012.

SPECIES SPOTLIGHT