11
1
March
19
20
COPE, J. C. W. 1968. Epizoic oysters on Kimmeridgian ammonites. Palaeontology, 11, 1, 19–20.
John C. W. Cope Oyster distribution on certain Kimmeridgian ammonites is consistent with -attachment occurring after the death of the ammonites. The Palaeontological Association (Free Access)