Ingersoll Shale

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Ingersoll Shale
Stratigraphic range: Santonian
TypeGeological formation
Unit ofEutaw Formation
CountryUnited States

The Ingersoll Shale is a Late Cretaceous (Santonian) Geological formation in eastern Alabama. Fourteen Theropod feathers have been recovered from the unit.[1]


  1. ^ Terrell K. Knight, P. Sean Bingham, Ronald D. Lewis, and Charles E. Savrda, (2011) Feathers of the Ingersoll shale, Eutaw Formation (Upper Cretaceous), eastern Alabama: The largest collection of feathers from North American Mesozoic rocks. PALAIOS 26: 364–376 doi:10.2110/palo.2010.p10-091r [1]