Paleontology of the Mississippi River Mudlumps: A Reassessment of Their Foraminiferal Fauna

Harold V. Andersen

Abstract


The Mississippi River Mudlumps are diapiric submarine prominences or islands, which occur within the mouths [or passes] of the Mississippi River. The foraminiferal assemblage of the Mudlumps was described by this writer in 1961 based upon the prolific faunules of Foraminiferida from these features, especially those located near the end of South Pass. This microfauna as described originally included numerous species with generic placements that are no longer valid. The new generic assignment for each of these taxa is listed herein and two new genera, Picouella and Tidwellella, are described to accommodate species that cannot be placed in existing genera.


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