Genus: Invictarx McDONALD & WOLFE, 2018
Etymology: Latin, invictus, "invincible, unconquerable," and Latin, arx, "forteress," in reference to the well-armored nature of ankylosaurian dinosaurs.

Species: zephyri McDONALD & WOLFE, 2018
Etymology: Latin, zephyrus, "west wind," in reference to the blustery conditions that prevail among the outcrops where the specimen was discovered. The specific name, zephyrie, is the genitive form of the masculine noun zephyrus.

Holotype: WSC 16505

Locality: Juans Lake Beds, San Juan County, New Mexico.

Note: Precise locality data are on file at WSC, UMNH, and the BLM.

Horizon: Upper part of the Allison Member, Menefee Formation.

Biostratigraphy:

Age: Lower Campanian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.

Material: Incomplete postcranial skeleton including fragments of a dorsal rib, 6 complete or partial identifiable osteoderms (WSC 16505.1-WSC 16505.6), and fragmetns of additional osteoderms.

Reerred material:

UMNH VP 28350: Incomplete postcranial skeleton including three dorsal vertebrae, fragments of dorsal ribs, distal end of left humerus, distal end of left ulna, procimal ends of left and right radii, incomplete metacarpal, numerous incomplete but identifiable osteoderms, and fragments of additional osteoderms.

UMNH VP 28351: Incomplete postcranial skeleton including fragments of several dorsal centra, fragments of dorsal ribs, numerous incomplete but identifiable osteoderms, and fragments of additional osteoderms.

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