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Life-Orientation Relationships of Some Eocene Bryozoan-Coral Associations

Ronald Greeley
Journal of Paleontology
Vol. 44, No. 2 (Mar., 1970), pp. 343-345
Stable URL: http://www.jstor.org/stable/1302547
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Life-Orientation Relationships of Some Eocene Bryozoan-Coral Associations
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Abstract

Specimens of Oligotresium sp., Lunulites jacksonensis (Canu & Bassler, 1920) and of L. bouei Lea, 1833, occur in Eocene deposits of the Gulf Coastal Plain with small unidentified corallites attached to the frontal surface of the lunulitiform zoaria. Position and relationship of the corallites on the bryozoans indicate orientation of fossil zoaria was apex-up, and that natatory activities by the zoaria were unlikely. The association apparently was not harmful to bryozoan colony or coral; the only effect was flatter zoarial growth than normal.

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