Name: Rayososaurus ‭(‬Rayoso lizard‭ ‬-‭ ‬after the Rayoso Formation).
Phonetic: Ya-o-so-soer-us.
Named By: Jose Fernando Bonaparte‭ ‬-‭ ‬1996.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬Sauropodomorpha,‭ ‬Sauropoda,‭ ‬Diplodocoidea,‭ ‬Rebbachisauridae.
Species: R.‭ ‬agrionensis‭ (‬type‭)‬.
Diet: Herbivore.
Size: Uncertain,‭ ‬but very roughly estimated to be about‭ ‬6‭ ‬meters long.
Known locations: Argentina,‭ ‬Patagonia‭ ‬-‭ ‬Rayoso Formation.
Time period: Cenomanian of the Cretaceous.
Fossil representation: Partial post cranial remains including Scapula,‭ ‬femur and partial fibula.

       A very small sauropod,‭ ‬Rayososaurus is considered to be very similar to another genus called Rebbachisaurus.‭ ‬Because Rayososaurus is from South America and Rebbachisaurus is from Africa,‭ ‬this has given rise to the notion that these two continents were joined for much longer than previously thought back in the Cretaceous.

Further reading
- Cretaceous tetrapods of Argentina. - Münchner Geowissenschaften Abhandlungen 30:73-130. - J. F. Bonaparte - 1996.


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