Bashi Formation
Stratigraphic range: Ypresian (Wasatchian) ~55–50 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Lithology
Primary	Marl
Location
Coordinates	32°24′N 88°42′W / 32.4°N 88.7°W / 32.4; -88.7
Approximate paleocoordinates	34°30′N 74°06′W / 34.5°N 74.1°W / 34.5; -74.1
Region	Alabama Mississippi
Country	United States
Bashi Formation (the United States) Show map of the United States Bashi Formation (Mississippi) Show map of Mississippi

The Bashi Formation is a geologic formation in Alabama and Mississippi. It is named for Bashi Creek in northern Clarke County, Alabama, which cuts through some of its exposures. It preserves fossils dating back to the Eocene period, or Wasatchian in the NALMA classification.^[1]

The following fossils have been reported from the formation:^[1]

Reptiles

• Palaeophis cf. littoralis^[2]
• Palaeophis virginianus^[2]

Fish^[3][4]

• List of fossiliferous stratigraphic units in Alabama
• Paleontology in Alabama

• Case, G. R.; Leggett, J. J. (1999), "Cretolamna cf. C. aschersoni (Stromer) (Neoselachii: Cretoxyrhinidae),from the Late Paleocene/Early Eocene of Mississippi, USA, with Comparisons to Moroccan Fauna", The Mosasaur - the Journal of the DVPS, 6: 25–28
• Case, G. R (1994), "Fossil fish remains from the Late Paleocene Tuscahoma and Early Eocene Bashi Formations of Meridian, Lauderdale County, Mississippi, Part I. Selachians", Palaeontographica Abteilung A, 230 (4–6): 97–138, Bibcode:1994PalAA.230...97C, doi:10.1127/pala/230/1994/97
• Parmley, D.; Case, G. R. (1988), "Palaeopheid snakes from the Gulf Coastal region of North America", Journal of Vertebrate Paleontology, 8 (3): 334–339, Bibcode:1988JVPal...8..334P, doi:10.1080/02724634.1988.10011717