Genus: Nodocephalosaurus SULLIVAN, 1999
Etymology: From Latin nodus, meaning “knob” or “swelling,” in reference to the many bulbous osteoderms fused to the top of the skull; the Greek, cephalo, meaning, “head” and the Greek, sauros”, lizard: “Knob head lizard”.
= Nodocephalosaurus SULLIVAN, 1998 (nomen nudum)
Etymology:

Species: kirtlandensis SULLIVAN, 1999
Etymology: Specific name refers to the formation from which the holotype came, the Kirkland Formation.
= Nodocephalosaurus kirtlandensis SULLIVAN, 1998 (nomen nudum)
Etymology:

Holotype: The State Museum of Pennsylvania, Harrisburg, SMP VP-900

Locality: SMP locality 319, west of Willow Wash, SE ¼, NE ¼, NE ¼ of sec. 3, T24N, R13W, Alamo Mesa East Quadrangle, San Juan County, San Juan Basin, New Mexico.

Horizon: De-na-zin Member, Lower Kirtland Formation.

Biostratigraphy:

Age: Kirtlandian age, Upper Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Fragmentary skull and some cranial fragments.

Referred material:

NMMNH P-27404: A tertiary scute.

BURNS, 2008, FORD, 2000

Locality: NMMNH locality 1672, San Juan Basin, New Mexico.

Horizon: De-na-zin Member, Kirtland Formation.

Biostratigraphy:

Age: Kirtlandian age, Upper Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous

Material:

NMMNH P-27405: 2 fragmentary pup-tent scutes and several fragmentary scutes.

 

SULLIVAN & FOWLER, 2006

Locality: SMP Loc. 309, San Juan Basin, San Juan County, New Mexico.

Horizon: De-na-zin Member, Lower Kirtland Formation.

Biostratigraphy:

Age: Kirtlandian age, Upper Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

SMP VP-1149: 7th or 8th caudal vertebra.

 

Locality: SMP Loc. 358, San Juan Basin, San Juan County, New Mexico.

Horizon: De-na-zin Member, Lower Kirtland Formation.

Biostratigraphy:

Age: Kirtlandian age, Upper Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

SMP VP-1743: First caudal vertebra.

BURNS & SULLIVAN, 2011

SMP VP-1646: Incomplete tail club, consisting of an incomplete major plate and minor plates.

 

Locality: SMP Loc. 361, San Juan Basin, San Juan County, New Mexico.

Horizon: De-na-zin Member, Lower Kirtland Formation.

Biostratigraphy:

Age: Kirtlandian age, Upper Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

SMP VP-1870: A left cervical spine.

BURNS & SULLIVAN, 2011

SMP VP-2074: Nearly complete left plate, partial right plate and numerous miscellaneous tail club fragments.

 

Locality: SMP Loc. 382, San Juan Basin, San Juan County, New Mexico.

Horizon: De-na-zin Member, Lower Kirtland Formation.

Biostratigraphy:

Age: Kirtlandian age, Upper Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

SMP VP-1957: 2 cephalic (cranial osteoderms).

 

BURNS & SULLIVAN, 2011

Locality: SMP Locality 404, east branch of Hunter Wash (SW), San Juan County, New Mexico.

Horizon: De-na-zin Member, Lower Kirtland Formation.

Biostratigraphy:

Age: Kirtlandian age, Upper Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

SMP VP-1632: Inomplete minor tail club plate.