ArthropodaTREE.jpg, 13K
Zoology 250 (2017)

ARTHROPODA (I): General features

( Arthropoda study images;
click on tree to see full cladogram)

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1) Largest animal phylum: >1,250,000 sp., >75% of animal species

2) The entire exoskeleton (cuticle) must be molted to grow

3) Jointed limbs exhibit a tremendous diversity and versatility of form:

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Copyright (c) 2017 by A. Richard Palmer. All rights reserved.
(revised Dec. 19, 2016)