Ιατρικά Άρθρα Αλέξανδρος Γ. Σφακιανάκης: It's a Girl! Special T. rex was an Expectant Mother

Τρίτη 10 Ιανουαρίου 2017

A follow-up study confirms the one sure way to sex a Tyrannosaurus.

-- Read more on ScientificAmerican.com

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