Mammals vs dinos first birds

Video source is acedemic science there are many similarities between birds and theropod dinosaurs including the number of openings in the skull they are diapsids secondary palate structure leg and foot structure and proportions upright stance oviparous birth laying eggs bone structure bones interlaced with vessels and in some instances feathers

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Channels: Scientific Animations

Tags: Mammals Vs Dinos First Birds

Uploaded by: ( Send Message ) on 07-12-2012.

Duration: 1m 16s