Crocodile Head Scales Are Not Developmental Units But Emerge from Physical Cracking
Abstract
Various lineages of amniotes display keratinized skin appendages (feathers, hairs, and scales) that differentiate in the embryo from genetically controlled developmental units whose spatial organization is patterned by reaction-diffusion mechanisms (RDMs). We show that, contrary to skin appendages in other amniotes (as well as body scales in crocodiles), face and jaws scales of crocodiles are random polygonal domains of highly keratinized skin,...
Paper Details
Title
Crocodile Head Scales Are Not Developmental Units But Emerge from Physical Cracking
Published Date
Jan 4, 2013
Journal
Volume
339
Issue
6115
Pages
78 - 81
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