Genus: Magnuviator DeMAR, CONRAD, HEAD, VARRICCHIO, & WILSON, 2017
Etymology: Latin, magnus, "mighty" and Latin, viator-, "traveller": the genus name refers to teh body size and biogeographic history fo tehanimal as implied by its sister-group relationships.

Species: ovimonensis DeMAR, CONRAD, HEAD, VARRICCHIO, & WILSON, 2017
Etymology: Latin, ovi-, "egg," Latin, mons, "mountain," and Latin, -ensis, suffix meaing 'from': the species name refers to its type locality, Egg Mountain, Teton County, Montana, USA.

Holotype: MOR 6627

Locality: Egg Mountain, Teton County, northwestern Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:A nearly complete and mostly articualted skeleton.

Referred material:

MOR 7042: A nearly complete and mostly articulated skeleton.