Mussaurus ‭(‬Mouse lizard‭)‬

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Mussaurus ‭(‬Mouse lizard‭)‬

Phonetic : Mus-sore-us.

Named By : J.‭ ‬F.‭ ‬Bonaparte‭ & ‬M.‭ ‬Vince‭ ‬-‭ ‬1979

Diet : Herbivore

Size : Estimated 6 meters long

Type of Dinosaur : Sauropod

Type Species : M.‭ ‬patagonicus‭ (‬type‭)‬

Found in : Argentina,‭ ‬Santa Cruz Province‭ ‬-‭ ‬El Tranquilo Formation

When it Lived : Late Triassic, 221-210 million years ago

Mussaurus, which means “mouse-lizard”, is a genus consisting of herbivorous sauropodomorph dinosaurs. It lived in southern Argentina during Early Jurassic. The maximum age was 192.8 Ma. The skeletons of infant and juvenile individuals are small, making it the genus’ only known species. Mussaurus has been renamed to Mussaurus adult specimens. Adults may have reached six metres (20 feet) in length and weighed over 1,000 kilograms (2200 lb). Mussaurus has anatomical characteristics that suggest a close evolutionary relationship, if not transitional, with true sauropods.


Mussaurus patagonikus DSC 2904Eva K. (GFDL 1.2 or FAL), via Wikimedia Commons


Jose Bonaparte led an expedition that discovered juvenile and infant fossils of Mussaurus during the 1970s. It was part of the Laguna Colorada Formation Expedition. The team discovered fossilized eggs and hatchlings that provided insight into the reproductive strategies and life cycles of Mussaurus, as well as other sauropodomorph dinosaurs. In 2013, the first Mussaurus adult specimens were discovered. These specimens were first described in 1980, and originally belonged to the genus Plateosaurus.

Source: Wikipedia