Thunder Lizard Thursday: Alamosaurus!

Alamosaurus,© 2015 Liz Vitale

Alamosaurus,© 2015 Liz Vitale

Remember the Alamosaurus!! Why? Because recent analysis has shown that it may have been an even bigger dinosaur than originally estimated, possibly closer in size to its more famous South American cousin, one of the largest known dinosaurs,Argentinosaurus. In fact, it looks as if some of the “type fossils” used to reconstruct Alamosaurus may have come from adolescents rather than full-grown adults, meaning that this titanosaur may well have attained lengths of over 60 feet from head to tail and weights in excess of 70 or 80 tons.

Alamosaurus was a gigantic titanosaur with relatively long limbs. It is one of the few titanosaurs known to have lived in late Cretaceous North America. Contrary to popular belief, Alamosaurus is not named after the Alamo in San Antonio, Texas, or the battle that was fought there. The  original specimen was discovered in New Mexico and the name Alamosaurus comes from Ojo Alamo, the geologic formation in which it was found.

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