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Site selectivity of a lower carboniferous boring organism infesting a crinoid
Author(s) -
Donovan Stephen K.
Publication year - 1991
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.3350260102
Subject(s) - crinoid , carboniferous , organism , paleontology , biology , fibrous joint , geology , anatomy , zoology , structural basin
The position of a boring in a cup of the disparid crinoid Synbathocrinus conicus Phillips from Clitheroe, England, suggests various inferences concerning the ecology of the pit‐forming organism. The crinoid cup shows a growth deformity, indicating it must have been alive when infested. The boring is at a triple suture between the E and A ray radials and the EA interray basal, presumably one of five equally weak points on the cup. This site is well removed from the anus and would have been an ideal point of attachment for a filter feeding organism, being well elevated, upcurrent and protected.