Genus: Acherontisuchus HASTINGS, BLOCK & JARAMILLO, 2011
Etymology:, Greek, Acheron, from ancient Greek mythology, the river Acheron ('the river of woe') a branch of the underworld river Styx over wich Charon ferried the dead across into hades, and Greek, suchus, "crocodile."

Species: quajiraensis HASTINGS, BLOCK & JARAMILLO, 2011
Etymology: In refrence to the Guajira Peninsula in northeastern Colombia, the location of the Cerrejon Coal mine from which all specimens were recovered.

Holotype: UF/IGM 34

Locality: Cerrejon Coal Mine, 11°08.944'N, 72°32.89'W, La Guajira Department, northeastern Colombia.

Horizon: Cerrejon Formaiton, underclay of Coal Seam 90.

Biostratigraphy:

Age: Middle to late Paleocene Epoch, Lower Paleogene Period, Lower Tertiary Subera, Cenozoic Era.

Material: A mostly complete mandible including left and right dentaries, splenials, 14 partial mandibular teeth, right surangular, and 4 maxillary fragments, 4 partial teeth and 2 partial ribs.

Referred material:

Locality: Underclay of Coal Seam 90 within the La Puente Pit, Cerrejon Coal Mine, 11°90'03.70"N, 72°33'.18,98"'W, La Guajira Department, northeastern Colombia.

Horizon: Cerrejon Formaiton, underclay of Coal Seam 90.

Biostratigraphy:

Age: Middle to late Paleocene Epoch, Lower Paleogene Period, Lower Tertiary Subera, Cenozoic Era.

Material:

UF/IGM 35: Mandibile including left and right dentaries and splenials, the left surangular, angular and articular and a total of 3 partial teeth, 2 ribs, 1 sacral vertebra with partial sacral ribs, and one metatarsal.

 

Locality: Underclay of Coal Seam 40 within the West Extension Pit, Cerrejon Coal Mine, La Guajira Department, northeastern Colombia.

Horizon: Cerrejon Formaiton, underclay of Coal Seam 90.

Biostratigraphy:

Age: Middle to late Paleocene Epoch, Lower Paleogene Period, Lower Tertiary Subera, Cenozoic Era.

Material:

UF/IGM 36: Edentulous mandible including partial left and right dentaries.

UF/IGM 37: Dorsal vertebra.

UF/IGM 38: A nearly complete ilium and ischium.

UF/IGM 39: Femur.