Species: baylorensis BROILI, 1904
Etymology:

Holotype: AMNH 4342

Locality: West Coffee Creek, near Seymour, Baylor County, Texas.

Horizon: Clear Fork Group.

Biostratigraphy:

Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.

Material: Incomplete skull.

Referred material:

LAURIN, 1996

MCZ 1081: Skull lacking most of the palate.

MCZ 1083: A string of presacral vertebrae, an ulna, an incomplete right lower jaw, and the left half of a skull lacking the braincase and occiput.

MCZ 1084: A fragmentary skull consisting of the posterior portion of the skull table, occiput, parts of the braincase, isolated fragments of the palate and cheek, and a left lower jaw.

MCZ 1086: An incomplete skull.

FMNH UR 458: A poorly preserved skull, three strings of vertebrae including parts of two atlas-axis complexes, two femora, and other fragments of the appendicular skeleton.

BMS E3500: Skull with mandibles.

 

Locality: About 7.5 km east and 4/5km north of Henrietta, Clay County, Texas.

Horizon: Nocona Formation (formerly lower to lower upper Admiral Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron lower B.

Age: Upper Wolfcampanian stage, Upper Rotliegendes Epoch, Early Permian.

Material:

TMM 31189-1: Skull with lower jaws lacking the braincase and most of the palate.

 

BERMAN & MARTENS, 1993

Locality: Texas.

Horizon: Nocona Formation (Admiral Formation), Wichita Group.

Biostratigraphy:

Age: Leonardian stage, Latest Wolfcampain Series, Sakmarian stage, upper lower to lower middle Rotilegendes Epoch, Early Permian.

Material:

CNHM 663, MCZ 1082, 1085: Skulls.

 

OLSON

Locality: West bank of Brushy Creek, Baylor County, Texas.

Horizon: Arroyo Formation, Lower Clear Fork Group.

Biostratigraphy: Land-vertebrate faunachron lower D.

Age: Middle Leonardian stage, upper Rotliegendes, Early Permian.

Material:

Number: Not given: A mounted skeleton and 2 other specimens.

 

SANDER, 1989

Locality: Archer City Bonebed 2, Archer County, Texas.

Horizon: Upper Archer City Formation (formerly Putnam Formation, Wichita Group), upper Bowie Group.

Biostratigraphy: Land-vertebrate faunachron upper A.

Age: Wolfcampanian stage, Lower Rotliegendes Epoch, Early Permian.

Material:

Number: Not given: Vertebrae.

 

SUMIDA, LOMBARD & BERMAN, 1992

Locality: Baylor County, Texas.

Horizon: Clear Fork Group undivided, Clear Fork Group.

Biostratigraphy:

Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.

Material:

FMNH 6138: Anterior portion of a vertebral column.

 

Locality: ‘Labidosaurus pocket’, Middle Coffee Creek, Baylor County, Texas.

Horizon: Clear Fork Group undivided, Clear Fork Group.

Biostratigraphy:

Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.

Material:

FMNH UR 458: 2 anterior strings from 2 different individuals.

 

WILLISTON, 1918

Locality: Craddock Bonebed, Baylor County, Texas.

Horizon: Arroyo Formation, Lower Clear Fork Group.

Biostratigraphy: Land-vertebrate faunachron lower D.

Age: Middle Leonardian stage, upper Rotliegendes, Early Permian.

Material:

Number: Not given: Fragmentary skulls and skeletons of two individuals.

 

Locality: West Coffee Creek, Baylor County, Texas.

Horizon: Clear Fork Formation, Clear Fork Group.

Biostratigraphy:

Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.

Material:

Number: Not given: Fragmentary skull and fragmentary skeleton of a juvenile.

 

WILLISTON

Locality: Near Seymour, Baylor County, Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

Number: Not given: Skull and skeleton.

 

= Conodectes favosus COPE, 1896
Etymology:

Holotype: AMNH 4342

Locality: Gray Creek, Baylor County, Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material: Fragmentary skull.

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Species: sanjuanensis VAUGHN, 1966
Etymology:

Holotype: NTM VP 1024

Locality: Near the intersection of secs, 17, 18, 19 and 20, T43S, R17E, San Juan County, Utah.

Horizon: Lower Organ Rock Shale, Lower Leonardian series.

Biostratigraphy:

Age: Lower Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.

Material: A horizontally compressed skull lacking the tip of the snout and a part of the interorbital region.

Paratypes:

NTM VP1023: A distorted, articulated skull lacking its posterior portion but associated with parts of the clavicles and interclavicles.

NTM VP1025: Impression a skull roof with parts of the skull table, anterior vertebrae, and parts of shoulder girdle and forelimb.

NTM VP1026: Fragmentary skull roof with anterior vertebrae and parts of the front limbs.

Referred material:

NTM VP 1027: Innominate bone and attached proximal part of femur.

NTM VP1028: Manus with impressions of epipodials.

NTM VP1029: Posterior most dorsal, sacral and anterior most caudal vertebrae and a femur, tibia and fibula.

NTM VP1030: A string of about half a dozen caudal vertebrae.

NTM VP1031: A partial shoulder girdle and attached proximal part of humerus.

NTM VP1032: Partial innominate bone and attached femur.

 

Locality: SW 1/4, SE 1/4, sec 24, T43S, R16E, San Juan County, Utah.

Horizon: Lower Orange Rock Shale, Lower Leonardian series.

Biostratigraphy:

Age: Lower Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.

Material:

NTM VP 1033: A partial braincase.

NTM VP1034: Palatal fragment.

NTM VP1035: Fragmentary skull and lower jaw.

NTM VP1036, 1037, 1038: Fragmentary skeletons.

 

BERMAN, 1993

Locality: Arroyo de Agua Locality, New Mexico.

Horizon: Cutler Formation, Wolfcampian.

Biostratigraphy:

Age: Lower Rotliegendes Epoch, Early Permian.

Material:

Number: Not given:

 

BERMAN & MARTENS, 1993

Locality: Rio Arriba County, New Mexico.

Horizon: Cutler Formation.

Biostratigraphy:

Age: Permo-Pennsylvanian.

Material:

CM 38022: Nearly complete skeleton missing parts of fore and hind limbs and part of tail.

CM 38559: Complete articulated vertebral column and portion of pelvic girdle.

CM 28596, 28597: Skulls.

 

Locality: Utah.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

NTM VP 1023, 1024, 1025, 1034: Skulls.

= Seymouria cf sanjuanensis BERMAN & MARTENS, 1993
Etymology:

Locality: Bromacker locality, of the middle part of the Thuringian Forest near the Village of Tambach-Dietharz and about 20 km south of the town of Gotha, central Germany.

Horizon: Uppermost level of 60 m thick middle sandstone unit, Tambach Formation.

Biostratigraphy:

Age: Lowermost unit of the upper Rotliegend Epoch, Early Permian.

Material: MNG 7727: Greater part of a skull, with both jaws closely attached, and isolated but closely associated right clavicle and ilium.

MNG 8759: Skull and a partial articulated skeleton.

BERMAN, HENRICI, SUMIDA & MARTENS, 2000

MNG 10553, 10554: 2 nearly complete specimens.

KLEMBRARA, MARTENS & BARTIK, 2001

MNG 7747: Left forlimb of a juvenile found near MNG 7727.

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Species: grandis OLSON, 1979
Etymology:
= Labidosaurikos meachami MCLEAN, 1970Etymology:

Holotype: FMNH UR 1031

Locality: West side of US highway 77, north of the Cimarron River and south of Crescent, Logan County, Oklahoma.

Horizon: Lower Fairmont Shale, Hennessey Group.

Biostratigraphy:

Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.

Material: Fragmentary skull and anterior cervical vertebra.

Referred material:

UCLA VP 3152: Fragments of skull and two intermediate cervical vertebrae.

UOSM 4-6-51 (catalogue number 15031): Presacral vertebrae and atlas.

 

Locality: Blackwood Ranch, 5.0 km south of Buffalo Gap, Taylor County, Texas.

Horizon: Vale Formation, Middle Clear Fork Group.

Biostratigraphy: Land-vertebrate faunachron lower to middle D.

Age: Upper Leonardian Stage,Upper Rotliegendes Epoch, Early Permian.

Material:

UCLA VP485: 2 vertebrae.

UCLA VP459: A small dorsal vertebrae.

UCLA VP559: 2 large dorsal lumbar vertebrae.

UCLA VP570: Small, presacral vertebra.

UCLA VP575: Part of a maxilla with alveoli for teeth, proximal half of femur.

UCLA VP597: Interclavicle.