The Ingersoll Shale is a Late Cretaceous (Santonian) informal geological unit in eastern Alabama. Fourteen theropod feathers assigned to birds and possibly dromaeosaurids have been recovered from the unit.Knight et al., 2011Ingersoll Shale at Fossilworks.org
Description The Ingersoll Shale consists of a clay-dominated lens, asymmetrical in cross-section, with a maximum thickness of and a width estimated to be less than .
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