Genus: Shastasaurus MERRIAM, 1895
Etymology: In reference to Shasta County, California where the specimen was
found, and Greek, sauros, “lizard”: Shasta lizard.
= Shastosaurus WILLISTON, 1925 (sic)
Species: pacificus MERRIAM, 1895
Etymology:
Holotype: UCMP (number unknown)
Locality: Between Squay Creek and Pitt River, a few miles north of Winthrop Post Office, Shasta County, California.
Horizon: Hosselkus Formation.
Biostratigraphy:
Age: Carnian Stage, Middle Triassic Epoch, Late Triassic.
Material: 8 vertebrae with several fragments of ribs and 2 arch bones, and a pubis.
Referred material:
HILTON, 2003
Locality: Shasta County, California.
Horizon: Hosselkus Limestone.
Biostratigraphy:
Age: Carnian Stage, Lower Late Triassic Epoch, Late Triassic.
Material:
CAS: Scapula.
CAS: Scapula fragment.
UCMP 9077: Vertebrae and ribs.
= Shastasaurus osmonti MERRIAM, 1902
Etymology:Holotype: UCMP 9076
Locality: Between Squay Creek and Pitt River, a few miles north of Winthrop Post Office, Shasta County, California.
Horizon: Hosselkus Formation.
Biostratigraphy:
Age: Carnian Stage, Middle Late Triassic Epoch, Late Triassic.
Material: 35 vertebrae and limbs.
Referred material:
MERRIAM 1908
UCMP 9608: Fragmentary skeleton.
UCMP 9081: Fragmentary skull and fragmentary skeleton.
ORR
Locality: Wallowa-Whitman National Forest along Eagle Creek at the intersection with Paddy Creek in the NW 1/4, sec. 21, T7S, R 44E, Wallow County, Oregon.
Horizon: Martin Bridge Limestone.
Biostratigraphy:
Age: Norian Stage, Late Triassic Epoch, Late Triassic.
Material:
Number: Not given: 23 vertebrae and associated ribs.
= Shastasaurus altispinus MERRIAM, 1902
Etymology: Latin, alti, "tall, high" and Latin, spinus, "spine."Holotype: UCMP 9083
Locality: Near Cove, 3 miles from Madison's Ranch, on Squaw Creek, Shasta County, California.
Horizon: Hosselkus Formation.
Biostratigraphy:
Age: Carnian Stage, Middle Late Triassic Epoch, Late Triassic.
Material: Fragmentary skeleton.
Referred material:
CALLAWAY & MASSARE, 1989
Locality: UCMP locality 9038, El Antimonio district, 44 km west of Caborca, Sonora State, Mexico.
Horizon: Antimonio Formation.
Biostratigraphy:
Age: Late Carnian Stage, Late Triassic Epoch, Late Triassic.
Material:
UCMP 27141: Fragmented but partially well-preserved anterior skull and lower jaw with broken and complete teeth in both, indeterminate skull and jaw fragments, fragments of 3 weathered posterior dorsal vertebrae, dorsal mid-rib fragments, 1 laterally compressed partial mesopodial or metapodial element.
UCMP 27142: 1 complete cervical rib and numerous distorted rib fragments from the cervical and anterior dorsal regions, 18 crushed and greatly distorted cervical and anterior dorsal vertebrae, 2 middle dorsal vertebrae, 1 complete and 1 fragment, both weathered and distorted, 2 weathered and distorted anterior dorsal vertebrae fragments, 3 complete but slightly distorted caudal vertebrae, 5 indeterminate vertebrae fragments, 1 incomplete cervical or anterior dorsal neural arch and spine with anterior zygapophyses preserved and distorted fragments of 9 others from the cervical and anterior dorsal regions, 13 laterally compressed distal forepaddle elements.
UCMP 27146: 1 well-preserved, but laterally compressed proximal, or near-proximal, phalange from an anterior margin.
LUCAS & GONZALEZ-LEON, 1995
Locality: Sierra del Alamo, Northwestern Sonora State, Mexico.
Horizon: Antimonio Formation.
Biostratigraphy: Horizons, A, B, C, D and E, Dilleri zone.
Age: Upper Carnian Stage, Late Triassic Epoch, Late Triassic.
Material:
= Shastasaurus alexandrae MERRIAM, 1902
Etymology:Holotype: UCMP 9017
Locality: Between Squay Creek and Pitt River, a few miles north of Winthrop Post Office, Shasta County, California.
Horizon: Hosselkus Formation.
Biostratigraphy:
Age: Carnian Stage, Middle Late Triassic Epoch, Late Triassic.
Material: Fragmentary skull, nearly all of the pectoral girdle, part of a humerus, 15 or 16 vertebrae and numerous ribs.
_____________________________________________________________________________________
Species: careyi MERRIAM, 1902
Etymology:
Holotype: UCMP 9075
Locality: Bear Mountain, 20 miles northeast of Redding, Shasta County, California.
Horizon:
Biostratigraphy:
Age: Late Triassic.
Material: Vertebrae and ribs.
Note: Shonisaurus-like.
Referred material:
UCMP 9614: Dorsal vertebrae.
HILTON, 2003
Locality: Shasta County, California.
Horizon: Hosselkus Limestone.
Biostratigraphy:
Age: Carnian Stage, Lower Late Triassic Epoch, Late Triassic.
Material:
UCMP 9080: Vertebra.
SENNIKOV, 2001/OTSCHEV & POLUKOTKO, 1964, NESOV, et al, 1988
Locality: Upper reaches of the Khivach River, a tributary of the Gizhiga River, basin of the Sea of Okhotsk, European Russia.
Horizon:
Biostratigraphy:
Age: Carnian Stage, Lower Late Triassic Epoch, Lower Late Triassic.
Material:
Number: Not given: An intervertebral cast.
_____________________________________________________________________________________
Species: ? merriami HUENE, 1916
Etymology: In honor of MERRIAM.
= Mixosaurus (?) atavus MERRIAM, 1908
Holotype:
Locality: Black Forest, Baden-Wurttemberg State, Germany.
Horizon: Wellen-Dolmit, Lower Muschelkalk.
Biostratigraphy:
Age: Anisian Stage, Lower Mid Triassic Epoch, Early Middle Triassic.
Material: 2 centra.
_____________________________________________________________________________________
Species: sikanniensis (NICHOLLS & MANABE, 2004) SANDER, CHEN,
CHANG & WANG,
2011
= Shonisaurus sikanniensis NICHOLLS & MANABE, 2004
Etymology: In reference to the Sikanni Chief River in northeastern British Columbia,
Canada, where the specimen was collected.
Holotype: RTMP 94.378.2
Locality: Southwest bank of Sikanni Chief River, 1.5 km downstream from the mouth of Chicken Creek, 57°15.81'N, 123°00.92'W, northeastern British Columbia Province, Canada.
Horizon: Pardonet Formation.
Biostratigraphy: Epigondolella posteraconodont zone, Mesohemavatites columbianus ammonite zone.
Age: Middle Norian, Late Triassic Epoch, Late Triassic.
Material: Incomplete skull and articulated skeleton.