Genus: Polycotylus COPE, 1869
Etymology: Greek, polys, “much, many” and Greek, kotyle, “hollow, cup”, + us: Very cupped vertebrae.

Species: latipinnis COPE, 1869

Referred material:

DRUMHELLER, O'KEEFE, MAYHALL STALKER & BROCHU, 2025 (published 2026)

Locality: A ‘deep’ gully in an old field, 1.25 miles west and .75 miles north west of west Green, Greene County, Alabama.

Horizon: Unnamed lower member, Mooreville Chalk Formation.

Biostratigraphy:

Age: Early-Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

FMNH PR 187, PR 1629: Nearly complete specimen, skull and skeleton.

Note: FMNH PR 187 mid-cervical vertevra has an embedded tooth within the ventral portion of the centrum of Xiphanctinus sp.