antepasados de los actuales manatíes y dugongos

It was first described in 2011 and is one of the most interesting members of the alvarezsaurid family

or intraspecific interaction

También tenía una cola larga y musculosa que probablemente usaba para equilibrarse mientras corría

reinforced by a complex network of ossified tendons that helped maintain body balance and stabilize the torso during movement

Spinosaurus mirabilis Variant:Hand-painted antepasados de los actuales manatíesSpinosaurus mirabilis is a recently described species of spinosaurid theropod dinosaur from fossil material found in the central Sahara, in the Jenguebi region of Niger, within early to middle Cenomanian river sediments, approximately 95 million years old. The species was formally established in a study led by Paul Sereno and colleagues, published in the journal Science in 2016, making it the first valid new species of the genus Spinosaurus described