Peedee Formation

The Peedee Formation is a geologic formation in North and South Carolina. A marine deposit representing an inner neritic environment, named for exposures along the Great Peedee River, it preserves invertebrate and vertebrate fossils dating to the Late Cretaceous.
The formation is notable for its occurrence of Belemnitella americana, known as the Pee Dee Belemnite, a long-standing standard in stable carbon isotope research. A single pterosaur femur, possibly an Azhdarchid, from the Peedee formation is one of the few pterosaur body fossils found in [Appalachia (landmass)|Eastern North America].
The stratigraphy of the formation spans from the early Maastrichtian to the late Maastrichtian shortly before the Cretaceous-Paleogene extinction event. The formation is divided into several members, including the early-mid Maastrichtian Rocky Point Member and the late Maastrichtian Island Creek Member. Based on its fauna, it appears to be roughly concurrent with the Navesink Formation from New Jersey.

Vertebrate paleobiota

Based on Case et al. :

The Peedee Formation preserves some of the latest-occurring remains of the Roveacrinida, an extinct order of minute, pelagic crinoids.

Genus	Species	Location	Member	Notes	Images
Applinocrinus	A. texanus	Wilmington, North Carolina		An applinocrinine saccocomid.
Birgelocrinus	B. degraafi	Wilmington, North Carolina		An hessicrinine saccocomid.
Lucernacrinus	B. degraafi	Wilmington, North Carolina		An hessicrinine saccocomid.
Lucernacrinus	B. jagti	Wilmington, North Carolina		An hessicrinine saccocomid.
Peedeecrinus	P. sadorfi	Wilmington, North Carolina		An applinocrinine saccocomid.