Abstract
The present paper describes a faunal association, consisting of the crinoids Cylindrocausliscus fiski? Moore and Jeffords and Lamprosterigma mirificum Moore and Jeffords with the pelecypods Aviculopecten and Palaeolima, collected in indurated slaty, black shales of Pennsylvanian age. The fossils proceed from the Santa Rosa Inferior Formation of southeastern Chiapas State.
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