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Smaller Foraminifera from the Porters Creek Formation (Paleocene) of Illinois

Chalmer L. Cooper
Journal of Paleontology
Vol. 18, No. 4 (Jul., 1944), pp. 343-354
Stable URL: http://www.jstor.org/stable/1299136
Page Count: 14
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Smaller Foraminifera from the Porters Creek Formation (Paleocene) of Illinois
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Abstract

A microfauna of smaller Foraminifera from the cuttings of a water well in Cache, southern Alexander County, shows the occurrence of Lower Eocene (Paleocene) sediments almost to the northern limit of the Mississippi embayment. Six families are represented, comprising 15 genera and 30 species. More than half of the species belong to the Lagenidae, with two to four species in each of the Heterohelicidae, Ellipsoidinidae, Rotaliidae, Globigerinidae, and Anomalinidae. Two new species are described.

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