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Acanthocircus breviaculeatus Donofrio & Mostler 1978

motility

Paleobiology Database
passively mobile
URI: http://eol.org/schema/terms/passivelyMobile

Definition: Organisms that are mobile but do not move actively, e.g., floating organisms and epibionts on living mobile organisms.

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

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(adult)