T. rex had teen pregnancies

Dinosaurs descended from reptiles and evolved into today's birds, but their growth and sexual maturation were more like that of mammals - complete with teen pregnancy, according to a new study by University of California, Berkeley, scientists.

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<p><a href="http://www.physorg.com/news119552671.html">T. rex had teen pregnancies</a></p> <p>Dinosaurs descended from reptiles and evolved into today's birds, but their growth and sexual maturation were more like that of mammals - complete with teen pregnancy, according to a new study by University of California, Berkeley, scientists.</p>