Biological Science (6th Edition)

by Freeman, Scott; Quillin, Kim; Allison, Lizabeth; Black, Michael; Taylor, Emily; Podgorski, Greg; Carmichael Jeff

Published by Benjamin Cummings

ISBN 10: 0321976495

ISBN 13: 978-0-32197-649-9

Chapter 32 - Deuterostome Animals - Review - Page 680: 3

Answer

mammals

Work Step by Step

Amniota includes reptiles and mammals. The synapomorphy, or shared characteristic, of these lineages is the amniotic egg, which is encased in a shell or membrane.

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