It is sometimes classified as the upper member of the Peace River Formation of the Hawthorn Group.

[2] It contains economically important phosphorite deposits that are mined in west-central Florida, as well as rich assemblages of vertebrate fossils.

The finer grained material is soft and plastic when wet, but hardens when dry.

[1] The Bone Valley Formation contains mammal fossils and its age has been determined by mammalian biostratigraphy.

Period: Neogene Epoch: Middle Miocene to Early Pliocene North American land mammal age: Barstovian to Hemphillian[3] The Bone Valley Formation includes a diverse assemblage of vertebrate fossils.