Abstract
Turborotalia semicunialensis is introduced here to elucidate new Late Eocene Turbrotalia species. It resembles T. cocoaensis, but with acute periphery in the last final chamber without keel, and also resemble T. cunialensis in having weak raised keel in the first two chambers. This new species is a part of Late Eocene planktic foraminifera assemblage: Subbotina linaperta (Finlay), Subbotina utilisindex (Jenkins and Orr), Globigerinatheka index (Finlay), Cribrohantkenina inflata (Howe), Hantkenina alabamensis Cushman, Hantkenina primitiva Cushman and Jarvis, Dentoglobigerina tripartita (Koch), Turbrotalia cocoaensis (Cushman), Turbrotalia semicunialensis, n. sp., Turbrotalia cunialensis (Toumarkine and Bolli) and Turbrotalia pseudoampliapertura (Blow and Banner).
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