Gateway to the Paleobiology Database
Phosphate Mine at Christina (Miocene of the United States)

Where: Polk County, Florida (27.9° N, 82.0° W: paleocoordinates 28.2° N, 79.3° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Bone Valley Member (Peace River Formation), Serravallian (13.7 - 11.6 Ma)

• Bradley Fauna; lower beds

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal; lithified, pebbly, phosphatic, argillaceous, sandy siltstone

• Bone Valley Formation environment consists of shallow lagoons and bays along the coast.
• Clastic rock unit consisting primarily of pebble- to sand-sized phosphates in a matrix of clay and quartz sand.

Size class: macrofossils

Preservation: original phosphate

Reposited in the USNM

Collection methods: salvage,

Primary reference: G. S. Morgan. 1994. Miocene and Pliocene marine mammal faunas from the Bone Valley Formation of central Florida. Contributions in Marine Mammal Paleontology Honoring Frank C. Whitmore Jr., Proceedings of the San Diego Society of Natural History 29:239-268 [J. Alroy/J. Alroy/M. Uhen] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 45459: authorized by Mark Uhen, entered by Nick Pyenson on 24.10.2004

Creative Commons license: CC BY (attribution)