A review and evaluation of homology hypotheses in echinoderm paleobiology [electronic resource] / Colin D. Sumrall, University of Tennessee, Sarah L. Sheffield, University of South Florida, Jennifer E. Bauer, University of Michigan Museum of Paleontology, Jeffrey R. Thompson, University of Southampton and Natural History Museum, London, Johnny A. Waters, Appalachian State University, North Carolina.

"The extraxial-axial theory (EAT) and universal elemental homology (UEH) are often portrayed as mutually exclusive hypotheses of homology within pentaradiate Echinodermata. The authors of this Element recommend these two hypotheses be used together to generate a better understanding of homology acro...

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