It is known for a plethora of terrestrial and aquatic vertebrate fossils, including dinosaurs and mosasaurs.

[2] Unlike many other Cretaceous geologic formations from eastern North America, which were deposited in entirely marine environments, the Bladen Formation appears to have been deposited in a former river delta in an estuarine habitat, allowing for a mixture of freshwater, terrestrial, and marine fauna.

[3] An important locality is the former Bladen County landfill annex in Elizabethtown, North Carolina, which contains the richest known fauna from the formation.

[4][5] Another notable locality is near Quinby in Florence County, South Carolina, which also appears to have been deposited in a nonmarine environment with minor marine influence.

[7] Based on Crane (2011), Schwimmer et al (2015) and the Paleobiology Database:[3][6][8] Based on Crane (2011) and Case et al (2019):[3][9] The chondrichthyan biota closely resembles that of the Aguja Formation from Texas.