Ascent of the Mammals by Stephen Brusatte | Free Audiobook

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Title: Ascent of the Mammals
Author: Stephen Brusatte, Zhe-Xi Luo
Narrator: Jef Holbrook
Format: Unabridged
Length: 24 mins
Language: English
Release date: 05-25-16
Publisher: Scientific American
Genres: Science & Technology, Magazine & Radio

Summary:
Like all eventual dynasties, mammals come from humble stock. In scientific parlance, they are defined as that group on the tree of life that contains the egg-laying monotremes, the marsupials (which raise their tiny babies in a pouch) and the placentals, as well as all the extinct descendants of their common ancestor. The first critters that started looking and behaving like todays mammals were an assortment of stem mammaliaforms, a fancy name for the very closest relatives of true mammals. They themselves evolved from cynodonts - primitive species that still retained many features of their reptilian forebears.
"Ascent of the Mammals" is from the June 2016 issue of Scientific American.

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