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Teen pregnancy rampant--among dinosaurs

Though dinosaurs grew for much of their lives, they experienced a rapid growth spurt in adolescence.

Dinosaurs descended from reptiles and evolved into today's birds, but their growth and sexual maturation were more like that of mammals, according to a study by scientists from University of California, Berkeley. The finding suggests that dinosaurs were born precocious and suffered high adult mortality, making early sexual maturity necessary for survival.

Read the full story at PhysOrg.com:"T. rex had teen pregnancies"