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Skin and a Few of Its Derivatives

Günter P. Wagner

in Homology, Genes, and Evolutionary Innovation

Published in print:
2014
Published Online:
October 2017
ISBN:
9780691156460
eISBN:
9781400851461
Item type:
chapter
Publisher:
Princeton University Press
DOI:
10.23943/princeton/9780691156460.003.0010
Subject:
Biology, Evolutionary Biology / Genetics

This chapter deals with amniote skin characters such as scales, feathers, and hair. One of the key novelties of vertebrates is their skin. Vertebrate skin is unique among metazoans in at least two ... More


Diversity of Paleozoic Stegocephalians

Michel Laurin

in How Vertebrates Left the Water

Published in print:
2010
Published Online:
March 2012
ISBN:
9780520266476
eISBN:
9780520947986
Item type:
chapter
Publisher:
University of California Press
DOI:
10.1525/california/9780520266476.003.0005
Subject:
Biology, Evolutionary Biology / Genetics

This chapter presents a survey of the biodiversity and phylogeny of early stegocephalians. Stegocephalians include all terrestrial and most amphibious vertebrates such as temnospondyls, embolomeres, ... More


Adaptations to Life on Land

Michel Laurin

in How Vertebrates Left the Water

Published in print:
2010
Published Online:
March 2012
ISBN:
9780520266476
eISBN:
9780520947986
Item type:
chapter
Publisher:
University of California Press
DOI:
10.1525/california/9780520266476.003.0006
Subject:
Biology, Evolutionary Biology / Genetics

This chapter discusses the main adaptations and exaptations (preadaptations) for terrestrial life in stegocephalians, first examining the evolution of the locomotor system (limb and girdle). It then ... More


Archaic Chickengators: Amniotic Archosaur Ancestors of Dinosaurs and Birds

Charles R. Ault

in Do Elephants Have Knees? And Other Stories of Darwinian Origins

Published in print:
2016
Published Online:
January 2017
ISBN:
9781501704673
eISBN:
9781501705861
Item type:
chapter
Publisher:
Cornell University Press
DOI:
10.7591/cornell/9781501704673.003.0011
Subject:
Biology, Evolutionary Biology / Genetics

This chapter focuses on the amniotic archosaur ancestors of dinosaurs and birds. Amphibians, reptiles, monotremes, and birds—frog, alligator, platypus, and chicken—all hatch from eggs and all boast ... More


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