Genus: Arizonasaurus WELLES, 1947
Etymology: In reference to the state of Arizona where the specimen was found, and Greek, sauros, "lizard."

Species: babbitti WELLES, 1947
Etymology:

Type: UCMP 36232

Locality: UC V3922, Holbrook Quarry, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material: Anterior portion of the left maxilla.

Referred material?

UCMP A36234: Basiphenoid.

UCMP 36233: Ilium.

UCMP 36231: Fragment of a much larger left maxilla with 2 teeth.

UCMP 37788: Left quadratojugal.

UCMP 37792: Left quadrate.

UCMP 37793: Posterior portion of jugual quadratojugal and squamosal.

UCMP 37812: Vertebra.

UCMP 37813: Cervical vertebra.

UCMP 37803: Anterior portion of femur.

UCMP V37815: Ilium.

 

Locality: UCMP V4117, Cocconio County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

UCMP 149275: Proximal ischium.

 

Locality: UCMP V4209, Cocconio County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

UCMP 57496: Posterior cervical vertebra.

 

Locality: UCMP V4210, Cocconio County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

UCMP 57549: 2 fused sacral vertebrae.

 

Locality: UCMP V4507, Cocconio County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

UCMP 149280: Pubis.

 

NESBITT, 2003, 2005

Locality: UCMP V4607, Cameron quarry, Cocconio County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

UCMP 38122: Basicranium.

After Nesbitt, 2003.

Locality: MSM 02-150, Anton Chico, San Miguel County, New Mexico.

Horizon: Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P4671: Neural spine fragment.

MSM P4667: Proxima pubis.

MSM P4682: Proximal ischium.

MSM P4675: Femur fragment.

MSM P4666, 4574, 4568: Ilia fragments.

MSM P4656: Proximal femur.

MSM P4549: Distal femur.

MSM P4583: Neural spine fragments.

 

Locality: MSM 02-151, Anton Chico, San Miguel County, New Mexico.

Horizon: Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P4590: Fragmentary left maxilla, left frontal, left dentary, left and right articular and partial surangular, right prearticular, braincase, left quadrate, left jugal, right squamosal, pterygoid, cervical vertebrae, dorsal vertebrae, sacral vertebrae, and nearly complete pectoral and pelvic girdles.

Locality: MSM 02-154, Anton Chico, San Miguel County, New Mexico.

Horizon: Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P4645: Ilium fragment.

MSM P4642: Neural spine.

MSM P4647: Braincase.

MSM P4648: Coracoid.

 

Locality: MSM 03-68, Anton Chico, iced out rolex fake San Miguel County, New Mexico.

Horizon: Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P4698: Femur fragment.

 

Locality: MSM 03-70, Anton Chico, San Miguel County, New Mexico.

Horizon: Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid fugazzi bentley replica Triassic Epoch, Middle Triassic.

Material:

MSM P4625: Ischium.

 

 

 

Locality: NMMNH L4222, Anton Chico, San Miguel County, New Mexico.

Horizon: Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

NMMNH P38591: Iliac crest.

NMMNH P38597: Pubis fragment.

 

Locality: NMMNH L4223, Anton Chico, San Miguel County, New Mexico.

Horizon: Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

NMMNH P38583: Iliac blade/posterior wing.

 

Locality: NMMNH L5243, Anton Chico, San Miguel County, New Mexico.

Horizon: Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

NMMNH P38733: Distal femur.

 

Locality: MSM 99-84, Five o'clock Quarry, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P3330: Dorsal vertebra.

MSM P3320, 3321: Proximal ends of 2 femora.

MSM P 3318: Ilium fragment.

MSM P4597: Distal ischium.

MSM P4596: Femur.

MSM P4595: Ilium fragment.

MSM P4603: Neural spine fragment.

 

 

Locality: MSM 98-48, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P 3315: Dorsal vertebra.

MSM P3328: Vertebra.

MSM P3336: Cervical vertebra.

MSM P3319: Proximal femur.

MSM P3340: Partial scapula.

Locality: MSM 00-99, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P4608: Dorsal vertebra.

MSM P3296: Ilium.

MSM P3297: Femur.

 

Locality: MSM 00-93, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P3259: Ilium fragment.

 

Locality: MSM 00-103, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P3307: Dorsal vertebra.

 

Locality: MSM 00-104, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P3313: Nearly complete femur.

 

Locality: MSM 02-136, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P4515: Neural spine fragments and quadrate fragment.

MSM P4505: Ilium fragment.

 

Locality: MSM 02-140, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P4523: Distal femur.

 

Locality: MSM 02-145, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MSM P4539: 2 proximal femora.

MSM P4537: Neural spine fragments.

 

Locality: MNA 208-5, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MNA V 5735: 2 scapular fragments.

MNA V5740: Femur fragments.

 

Locality: MNA 208-1, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MNA Pl 312: Neural spine fragments and ischium fragments.

 

Locality: MNA 208-2, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MNA Pl 355: Neural spine fragments.

 

Locality: MNA 2247-1, Navajo County, Arizona.

Horizon: Upper Moenkopi Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

MNA V2678, V5686: Vertebrae.

MNA V5687: Neural arch.

MNA V5688, V5689: Neural spine fragments.

 

SCHOCH, NESBITT, MULLER, LUCAS, & BOY, 2010

Localities: AC, a large area south-west of Anton Chico; COL along northern rim of the junction between best breitling replica watches the Gallians and Pecos Rivers, northwes ot Colonias; DIL, south of Dilia; Puerto de Luna, New Mexico.

Horizon: Moenkopi Formation, Anton Chico Member.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material:

NMMNH 55689, 55710: Maxilla.

NMMNH 55577, 55593, 55630, 55698, 55719, 55728, 55794: Cervical vertebrae.

NMMNH 55606, 55688, 55697, 55739, 55793-55795: Dorsal vertebrae.

NMMNH 55592, 55633, 55714, 55737, 55763, 55777: Femora.

NMMNH 55652, 55683-55685: Ilia.

NMMNH 55643, 55651: Pubes.

NMMNH 556744, 55771, 55791: Ischia.