Species: alcovensis CASE, 1936
Etymology:
Holotype: UW 5485 (old 51000)
Locality: Quarry dump, Jackson Canyon 9 miles southwest of Casper, Natron County, Wyoming.
Horizon: Alcova (Limestone) Member, Cow Mountain Formation, Chugwater Group.
Biostratigraphy:
Age: Spathian Stage, Uppermost Scythian Epoch, Late Early Triassic.
Material: Skull and fragmentary skeleton.
Referred material:
STORRS, 1991
FMNH PR 135: Lot number comprising widely scattered but associated partial individual (s?), notably including:
Isolated cervical vertebra with ribs/pat and counterpart.
Caudal vertebra and rib.
Right clavicle.
Crushed right humerus.
Fragmentary cervical series with ribs.
Partial ulna.
Numerous specimens of ribs and gastralia.
Singly pronged gastralium and other fragmentary gastralia.
Doubly pronged gastralium.
Partial skeleton including vertebrae, ribs, gastralia, isolated tooth, and partial hindlimbs.
Partial skeleton including fragmentary ribs, gastralia, metapodials, etc?
Fragmentary propoodial (Humerus?)
Isolated vertebra and gastralium.
FMNH PR 242: Impression of partial vertebral column and ribs.
FMNH PR 243: Right ilium and partial metopodial?
FMNH PR 244: Fragmentary dorsal Rib (s?)
FMNH PR 245: Dorsal neural arch.
FMNH PR 246: Left mandibular ramus/proximal end and indeterminate bone scrap.
FMNH PR 1368: Partial skeleton (s?) including partial mandible, vertebrae, gastralia, caudal chevron, tibia? etc.
FMNH PR 1369: Partial skeleton, vertebrae, ribs, gastarlia, partial pelvis and hindlimb, etc.
FMNH RP1382: Partial mandible with teeth.
FMNH PR 1383: Partial vertebral column.
YPM 41030: Partial skeleton, vertebrae, ribs, gastralia, etc.
YPM 41021: Partial skeleton, vertebrae, ribs, left humerus, scapula, ulna and radius.
YPM 41032: Left humerus.
YPM 41033: Left humerus.
YPM 41034: Right coracoid.
YPM 41035: Distal end of right humerus.
YPM 41036: Proximal end of right ulna.
YPM 41037: Left clavicle.
YPM 41038: Left femur.
YPM 41039: Right femur.
YPM 41040: (Left?) pubis.
YPM 41043: Partial mandible.
YPM 41044: Dorsal rib.
YPM 41045: Caudal chevron.
YPM 41046: Gastralium.
YPM 41047: Median caudal vertebra.
YPM 41048: Vertebral centrum.
YPM 41049: Partial neural arch.
YPM 41050: Dorsal vertebra with rib.
YPM 41051: Dorsal rib?
YPM 41052: Fragmentary epipodial?
YPM 41053: Vertebral column.
YPM 41054: Neural arch and spine.
YPM 41055: Proximal end of a femur.
YPM 41056: Vertebra.
YPM 41057: Vertebra.
YPM 41058: Dorsal vertebra.
YPM 41059: Gastralia.
YPM 41060: Partial tooth row.
YPM 41061: Rib fragment.
YPM 41062: Median caudal vertebra.
YPM 41063: Vertebra.
YPM 41064: Partial coracoid.
YPM 41065: Gastralia.
YPM 41066: Vertebra.
YPM 41067: Large median gastralium.
YPM 41068: Dorsal rib.
ZANGERL, 1963
Locality: 3 miles north-east of Freeland, Natrona County, Wyoming.
Horizon: Alcova (Limestone) Member, Cow Mountain Formation, Chugwater Group.
Biostratigraphy:
Age: Spathian Stage, Uppermost Scythian Epoch, Late Early Triassic.
Material:
FNHM PR 480: Posterior dorsal, sacral and caudal vertebrae, pelvis, femora, fragmentary right ulna, right radius and partial foot.