Bryoliths (Bryozoa) in the Gulf of California.

Date
2006-01
Authors
James, D.W.
Foster, M.S.
O’Sullivan, J.
Journal Title
Journal ISSN
Volume Title
Publisher
Honolulu, University of Hawaii Press
Abstract
Populations of Diaperoforma californica (d’Orbigny) bryoliths were discovered in rhodolith beds, a sand habitat, and on a cobble bottom in the Gulf of California, Mexico, the first known observation of a modern free-living cyclostome bryozoan in the Northern Hemisphere. Densities ranged from a mean of 9.2 to 22.6 individuals/0.06 m2. Bryoliths from the deepest site were irregularly shaped and had the highest variation in shape; those from shallow sites were spheroidal. Water motion and bioturbation move the bryoliths and may determine their morphology. Schizomavella robertsonae (Soule, Soule & Chaney) bryoliths also occurred occasionally in one rhodolith bed sampled. Fossilized bryolith specimens of the cyclostome Diaperoforma californica (d’Orbigny) were found in a Pleistocene deposit near modern habitats.
Description
v. ill. 23 cm.
Quarterly
Keywords
Citation
James DW, Foster MS, O’Sullivan J. Bryoliths (Bryozoa) in the Gulf of California. Pac Sci 60(1): 117-124.
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