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Zacanthoides holopygous Resser 1939

skeletal reinforcement

Paleobiology Database
major spines
URI: http://eol.org/schema/terms/majorSpines

Definition: Pointed, typically elongate appendages on the shell or carapace surface, comparable to or greater than the thickness of the shell/carapace and covering a notable portion of it.

Attribution: http://paleodb.org/public/tips/ecology_tips.html

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