Phosphatized ostracods from the cretaceous of Brazil

Abstract

SOME well preserved ostracods were first observed by Dr C. Patterson, British Museum (Natural History), in the insoluble residue of a carbonate nodule during the acetic acid preparation of the enclosed fish skeleton. Subsequently, careful examination of further washed residues produced more than 180 specimens all belonging to the same ostracod species. Nearly all the complete carapaces contained appendages and, in the males, copulatory organs projecting below the carapace in a partially erect position (Fig. 1A). © 1971 Nature Publishing Group.