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Monticules in a Jurassic Cyclostomatous Bryozoan

Published online by Cambridge University Press:  01 May 2009

P. D. Taylor
P. D. Taylor
Affiliation:
Department of Geological SciencesUniversity of DurhamSouth RoadDurham
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Summary

Structures similar to the monticules of Palaeozoic trepostomatous Bryozoa which occur in the Jurassic cyclostome Reptomultisparsa incrustans are described. They are interpreted as having a function analogous to that inferred for monticules. A smaller proportion of zooecia open on the monticules than between them, and, of these a higher proportion are occluded.These observations lend support to the theory proposed by Banta, McKinney & Zimmer (1974) that monticules functioned as regions of exhalant current chimneys on the zoarial surfaces of Bryozoa.

Type
Articles
Information
Geological Magazine , Volume 112 , Issue 6 , November 1975 , pp. 601 - 606
Copyright
Copyright © Cambridge University Press 1975

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References

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