Genus: Dyoplosaurus PARKS, 1924
Etymology: Greek, dyo, “two”, Greek, hoplon, “weapon, shield”, and Greek, sauros, “lizard”: “double-armored lizard”.
= Dioplosaurus HAY, 1930 (sic)
= Dyoplasaurus MARYANSKA, 1977 (sic)
= Scalosaurus MEHL, 1936 (sic)
= Scholosaurus MINELLIL, 1987 (sic)
= Scolasaurus CHEVRAUX, 1980 (sic)
= Scolosaurus NOPCSA, 1928
Etymology: Greek, skolos, “spine, thorn”, and Greek, sauros, “lizard”: “thorn lizard”.
= Skolosaurus HUENE, 1954 (sic)

Species: acutosquameus PARKS, 1924
Etymology:

Holotype: ROM 784 (formerly ROM 4929)

Locality: Quarry 002, Sec. 4, Tp. 21, R11W of 4th Mer., Red Deer River, Steveville, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.

Material: 3 fragmentary teeth, fragmentary skull, mandible, ilium, posterior axial skeleton with tail club, all of one hind limb including pes, armour, with skin impressions.

Referred material:


= Scolosaurus cutleri NOPCSA, 1928
Etymology:

Holotype: BMNH R5161

Locality: Quarry 080, Happy Jack Ferry, Dead Lodge Canyon, Newell County, Alberta Province, Canada.

Horizon: Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.

Material: Nearly entire skeleton missing skull and tip of tail.
Note: Skin impressions.
Note: Pathologic ulna.