Incisivosaurus

In-si-se-vo-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

Incisivosaurus ‭(‬Incisor lizard‭)‬.

Phonetic

In-si-se-vo-sore-us.

Named By

X.‭ ‬Xu,‭ ‬Y.-N.‭ ‬Cheng,‭ ‬X.-L.‭ ‬Wang‭ & ‬C.-H.‭ ‬Chang‭ ‬-‭ ‬2002.

Classification

Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬Theropoda,‭ ‬Oviraptorosauria.

Diet

Herbivore/Omnivore.

Species

I.‭ ‬gauthieri‭

Size

Skull‭ ‬10‭ ‬centimetres long.‭ ‬Body estimated to be about‭ ‬1‭ ‬meter long.

Known locations

China,‭ ‬Liaoning Province‭ ‬-‭ ‬Yixian Formation.

Time Period

Barremian of the Cretaceous.

Fossil representation

Skull.

In Depth

       Incisivosaurus was a rather bizarre looking dinosaur thanks to its oversized front teeth of the upper jaw.‭ ‬More interesting though is the fact that these teeth show wear patterns that fit in with a herbivorous diet,‭ ‬an‭ ‬indication that although a theropod,‭ ‬Incisivosaurus was at the very least partially herbivorous.‭ ‬Apart from this,‭ ‬Incisivosaurus was a primitive oviraptosaur and possible ancestor to the later oviraptosaurids that lived at the end of the Cretaceous.‭ ‬Later oviraptorids would have toothless beaks,‭ ‬but the discovery of Incisivosaurus indicates how their toothed ancestors may have looked.

       There has been speculation that Incisivosaurus may be the same genus as the earlier named Protarchaeopteryx,‭ ‬though a lack of fossils for both genera makes it impossible to be certain of this at the time of writing.

Further Reading

-‭ ‬An unusual oviraptorosaurian dinosaur from China. -‭ ‬X.‭ ‬Xu,‭ ‬Y.-N.‭ ‬Cheng,‭ ‬X.-L.‭ ‬Wang‭ & ‬C.-H.‭ ‬Chang‭ ‬-‭ ‬2002. -‭ ‬Cranial Osteology of the Theropod Dinosaur Incisivosaurus gauthieri‭ (‬Theropoda:‭ ‬Oviraptorosauria‭). -‭ ‬Amy M.‭ ‬Balanoff,‭ ‬Xing Xu,‭ ‬Matsufune Yoshimura‭ & ‬Mark A.‭ ‬Norell‭ ‬-‭ ‬2009.

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