Dinosaurs Inside and Out

Growing Bones

How were connections between theropod dinosaur vertebrae strengthened?

Some advanced species of theropod dinosaurs had strengthened vertebrae connections, but this was not accomplished by means of ossified tendons, as with the ornithischian dinosaurs. The theropod’s prezygapophyses elongated and grew over several vertebrae—sometimes as many as 12 vertebrae—and it strengthened and stiffened the area.


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