Anatomy, Reproductive Biology, and Phylogeny of the Planaxidae
Cerithiacea Prosobranchia

by Richard Houbrick

Pages: 68
Publisher: The Smithsonian Press
Edition: Contributions to Zoology, Number 445, 1987
Language: English
ISBN: B0029UG66Q


The Planaxidae is a family of tropical or subtropical, largely marine, amphibious prosobranchs that is adapted to
an intertidal, rocky environment. Known by the vernacular name of "clusterwinks," the Planaxidae includes six higher
Recent taxa comprising about 20 species throughout the world, most of which occur in large populations in intertidal
habitats. Despite their abundance and accessibility in the intertidal zone, the biology of Planaxis species is not well known. Some species are unique among prosobranchs in possessing a luminescent mantle organ, and all planaxids are unusual in that the females have cephalic brood pouches of ectodermal origin in which the young are brooded, usually up to the veliger stage.

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