Bone analysis suggests small T. rexes were not a separate genus; they were kids

(American Association for the Advancement of Science) Settling a decades-long debate about whether small Tyrannosaurus rex specimens represent a separate genus or rather just "kids" of their kind, a new examination of thinly sliced bones from two specimens at the Burpee Museum of Natural History in Illinois suggests the latter. The specimens were juveniles that had not yet experienced a major growth spurt before they