Species: megacephalus COPE, 1877
Etymology: Greek, mega, "large, big," and Greek, kephale, "head."

Holotype: AMNH 4189

Locality: Unknown, Wichita County, Texas.

Horizon: Unknown.

Biostratigraphy:

Age: Early Permian.

Material: Nearly complte but distorted skull, mandible, and most postcranial skeleton.

Referred material:

BRANSON 1905

Locality: Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

Number: Not given: Skull, a large number of vertebrae in association, the pectoral and pelvic girdles, and some limb bones.

 

CASE, 1915

Locality: Brier Creek Bone-bed, on the ranch of Mr. Estell, about 12 miles south of Dundee, a little east of the road between Dundee and Archer City, in Archer County, Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

3316: Right humerus.

 

CZAPLEWSKI, CIFELLI & LANGSTON JR, 1994

Locality: V700, Nobel County, Northern Oklahoma.

Horizon: Midco Member, Willington Formation.

Biostratigraphy:

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

Material:

OMNH 10061: Cervical vertebra with neural spine.

 

Locality: V114, Grant County, Oklahoma.

Horizon: Wellington Formation (Garber Formation), Summer Group, Arbuckle limestone, (Probably equivalent to the Arroyo Formation of Texas).

Biostratigraphy:

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

Material:

OMNH 10030: Intercentrum.

 

HUENE, 1913

Locality: Wichita County, Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

AMNH 4188: Fragmentary skull.

AMNH 4178: Fragmentary skull.

AMNH 4272: Skull.

 

LANGSTON, 1963

Locality: "Clay Hill" in KH at CGV 4 41, 2.6-3.3, Vale Formation, 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:

CNHM UR23: Skull.

Locality: "Chocolate Clay Locality" in KH at CGV 5 26, 6.3-4.95, 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:

Number: Not given:

 

Locality: Locality FA, just north of the North Fork of the Wichita River in Foard County Texas, approximately north of Vera, Texas.

Horizon: Choza Formation, Upper Clear Fork Group.

Biostratigraphy: Land-vertebrate faunachron middle D.

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

Material:

Number: Not given.

LYDEKKER, 1890

Locality: Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

BMNH R565: Fragment of skull.

BMNH R570: 2 fragments of a skull.

BMNH R570a: Fragment of a mandibular ramus.

BMNH R570B: Part of a mandibular ramus.

BMNH R570c: Fragment of a mandibular ramus with 9 fragmentary teeth.

BMNH R576: Several vertebrae.

 

MAY & HALL, 2016

Locality: Billings 4, SNOMNH site, Nobel County, Northern Oklahoma.

Horizon: Midco Member, Willington Formation.

Biostratigraphy:

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

Material:

Number: Not given.

 

OLSON, 1967

Locality: Mc Cann Quarry Site, the quarry is on Deer Creek, 8 miles west and 4 miles south of Blackwell (about 9 miles southwest in a direct line) and 2.5 miles northeast of Eddy, NE 1/4, sec. 16 and SW 1/4, sec. 9, T26N, R2W, in Kay County, Oklahoma.

Horizon: Wellington Formation (Garber Formation), Summer Group, Arbuckle limestone, (Probably equivalent to the Arroyo Formation of Texas).

Biostratigraphy:

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

Material:

OUSM 2-1-S2: Parts of skull, pelvis and shoulder girdle.

OUSM 2-1-S19: Fragmentary skull.

OUSM 2-1-S20: Fragment of skull.

OUSM 2-1-S21: Mandible fragments.

OUSM 2-1-S22: Skull fragments.

OUSM 2-4-S1: Partial jaw.

OUSM 2-4-S13: Partial mandible.

OUSM 2-34-S3: Skull fragments.

OUSM 6-4-S2: Jaw.

 

SANDER, 1989

Locality: Archer City Bonebed 1, 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: Fragments.

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

Horizon: Archer City Formation (formerly Putnam Formation), Wichita Group, Leonardian series.

Biostratigraphy:

Age: Upper Rotilegendes Epoch, Early Permian.

Material:

Number: Not given.

Locality: Archer City Bonebed 3, 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: Lower jaw ramus and skull parts.

JOHNSON, 2012

SMU 76608:

 

Locality: Coprolite Bonebed, Archer 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:

Number: Not given: Jaw and dermal bone.

 

Locality: Loftin Bonebed, Archer County, Texas.

Horizon: Admiral Formation, Wichita Group.

Biostratigraphy:

Age: Leonardian stage, Upper Rotilegendes Epoch, Early Permian.

Material:

Number: Not given: Skull parts and jaw parts.

 

Locality: Rattlesnake Canyon Bonebed 2, Archer County, Texas.

Horizon: Nocona Formation (Admiral Formation).

Biostratigraphy:

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

Material:

Number: Not given: Tooth, intercentra.

 

VAUGHN, 1968

Locality: Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

USNM 6721: Fragmentary skull.

 

WITZMAN, 2007

Locality:

Horizon: Petrolia Formation (formerly Belle Plains Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron upper B.

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

Material:

MCZ 1539: Caudal vertebrae with dermal scales.

MCZ 1738: Part and counterpart of gastral scales.

 

ZIDEK, JOHNSON, MAY & CLABORN, 2004

Locality: OMNH V 173, Northeast Frederic site of Simpson, (1976, 1979), Tillman County, Oklahoma.

Horizon: Garber Sandstone, Upper part of the Sumner Group, possibly equivalent to the Lower Arroyo Formation, Lower Clear Fork Group.

Biostratigraphy: Land-vertebrate faunachron lower D.

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

Material:

Number: Not given:

Locality: OMNH V 247, near the Lake Frederick site, Tillman County, Oklahoma.

Horizon: Garber Sandstone, Upper part of the Sumner Group, possibly equivalent to the Lower Arroyo Formation, Lower Clear Fork Group.

Biostratigraphy: Land-vertebrate faunachron lower D.

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

Material:

Number: Not given:

= Clepsydrops gigas COPE, 1878 (partim)
Etymology: Greek, gigas, "giant."
= Dimetrodon gigas (COPE, 1878) COPE, 1878 (partim)
= Luperosaurus gigas (COPE, 1878) ROMER, 1936

Holotype: AMNH 4006

Locality: Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material: Pelvis.

 

= Rhachitomus valens COPE, 1878
Etymology: Latin, valens, “strong, vigorous, healthy.”

Holotype: AMNH 4594

Locality:

Horizon:

Biostratigraphy:

Age:

Material: Vertebrae.

 

= Epicordylus erythroliticus COPE, 1878
Etymology:
= Eryops erythrolithicus (COPE, 1878) CASE, 1908

Holotype: AMNH 4280

Locality:

Horizon:

Biostratigraphy:

Age:

Material: Vertebral column.

 

= Anisodexis imbricarius COPE, 1882
Etymology:
= Eryops imbricarius (COPE, 1882)

Holotype: AMNH 4556

Locality:

Horizon:

Biostratigraphy:

Age:

Material: Skull fragments.

 

= Eryops latus CASE, 1903
Etymology: Latin, latus, "broad, wide."

Holotype: Chicago University 76

Locality: Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material: Scapula.

Referred material:

University of Chicago, 182: Scapula.

 

= Eryops willistoni MOODIE, 1910c
Etymology:

Holotype: KUVP 348

Locality: McCann quarry (earlier Nardin site, or Eddy site), on Deer Creek, 8 miles west and 4 miles south of Blackwell and 2.5 miles northeast of Eddy, NE 1/4, Sec. 16, and SW 1/4, Sec. 9, T26N, R2W, Kay County, Oklahoma.

Horizon: Wellington Formation (Garber Formation), Summer Group, Arbuckle limestone, (Probably equivalent to the Arroyo Formation of Texas).

Biostratigraphy:

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

Material: Fragments of skull, right mandible, single maxillary tooth, forelimbs and pectoral girdle, vertebrae and single rib, right scapulo-coracoid.

 

= Eryops anatinus BROOM, 1913
Etymology:

Holotype: AMNH 4310

Locality: Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material: Skull and dentary.

= Eryops cf megacephalus OLSON, 1970

Locality: Bed 16, about 9 miles northeast of Perry, Logan County, Oklahoma, SE 1/4, SE 1/4, sec. 26, T23N, R2W.

Horizon: Wellington Formation (Garber Formation), Summer Group, Arbuckle limestone, (Probably equivalent to the Arroyo Formation of Texas).

Biostratigraphy:

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

Material:

Number: Not given.

 

MOULTRON, 1974, ROMER, 1935

Locality: 1 mile south of Archer City, 33°34'N, 98°34'N, Archer County, Texas.

Horizon: 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:

MCZ 1421: Clavicle.

Locality: Unknown, North fork of the Little Wichita River, Baylor 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:

AMNH 4280:

AMNH 4180: Scapulocorcoid.

AMNH 4183: Scapulocoracoid, humerus, pelvis and femur.

AMNH 4186: Articulated pectoral girdle and right forelimb.

AMNH 4203: Radius, femur and tibia.

AMNH 4754: Clavicle, ulna, radius and tibia.

AMNH 23449: Fibula.

MCZ 4306, 2621, 3241, 3258: Fragmentary skeletons.

 

Locality: Geraldine Quarry, 33°43'N, 98°39'W, Archer 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:

AMNH 4198: Tibia.

MCZ 1883: Clavicle fragment.

MCZ 1984: Cleithrum.

MCZ 1900: Interlavicle (two specimens), and cleithera (two specimens.)

MCZ 7766: Interclavicle.

MCZ 7768: Cleithrum.

MCZ 7773: Ilium.

MCZ 7797: Tibia.

 

Locality: Rattlesnake Canyon, 33°40'N, 98°50'W, Archer 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:

MCZ 6475: Fibula.

 

Locality: Northwest of Megargel, 33°28"N, 98°55'W, Archer 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:

MCZ 2712: Scapulocoracoid.

 

Locality: 3 miles south of Black Flat, 33°39'N, 98°50"W, Archer 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:

MCZ 7279: Interclavicle.

MCZ 7551: Humerus.

MCZ 7555: Tibia and fibula.

MCZ 7559: Scapulocoracoid.

 

Locality: 'Long Creek', 33°28'N, 98°50'W, Archer 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:

AMNH 4215: Scapulocorcoid.

 

Locality: Upper Briar Creek, 33°37'N, 98°50'W, Archer 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:

MCZ 2565: Ventral Scapulocoracoid.

 

Locality: Unknown, "Big Wichita", Archer 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:

AMNH 4255: Humerus.

 

Locality: Mount Barry 6 miles southwest near Big Wichita River, 33°52'N, 98°37'W, Wichita County, Texas.

Horizon: Petrolia Formation (formerly Belle Plains Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron upper B.

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

Material:

AMNH 4211: Dorsal scapula and cleithrum.

 

Locality: Lower Brushy Creek, 33°45'N, 99°00W, Baylor County, Texas.

Horizon: Petrolia Formation (formerly Belle Plains Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron upper B.

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

Material:

MCZ 1137: Ulna.

 

Locality: Oilfield, north of Westover & Met Survey A-963, 33°33'N, 99°05'W, Baylor County, Texas.

Horizon: Petrolia Formation (formerly Belle Plains Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron upper B.

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

Material:

MCZ 2675: Interclavicle.

 

Locality: South side of Godwin's Creek, 33°33'N, 99°05'W, Baylor County, Texas.

Horizon: Petrolia Formation (formerly Belle Plains Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron upper B.

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

Material:

AMNH 4862: Ulna.

 

Locality: Hicks Farm, half mile south of Godwin Creek, 33°33'N, 99°05'W, Baylor County, Texas.

Horizon: Petrolia Formation (formerly Belle Plains Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron upper B.

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

Material:

AMNH 4307: Scapulocorcoid.

 

Locality: Steve Pierce's Place, 2 miles west and 5 miles south of Dundee, 33°42'N, 98°55'W, Archer County, Texas.

Horizon: Petrolia Formation (formerly Belle Plains Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron upper B.

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

Material:

MCZ 1219: Pelvis.

 

Locality: Tit mountain northeast of Dundee, 33°48'N, 98°50'W, Archer County, Texas.

Horizon: Petrolia Formation (formerly Belle Plains Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron upper B.

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

Material:

AMNH 4204: Scapulocoracoid and humerus.

 

Locality: Palo Pinto School land, 33°47'N, 98°55'W, Archer County, Texas.

Horizon: Petrolia Formation (formerly Belle Plains Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron upper B.

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

Material:

MCZ 2092: Tibia.

 

Locality: NoSee'um Quarry, San Diego Canyon, 4 miles south of Jemez Springs, 35°45'N, 106°45'W, Sandoval County, New Mexico.

Horizon: Cutler Formation.

Biostratigraphy:

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

Material:

MCZ 1858: Pelvis.

 

OLSON, 1967

Locality: Waurika Site 1, Waurika locality, about 6 miles west of Waurika in SW 1/4, NW 1/4, sec. 36, T4S, R9W, Jefferson County, Oklahoma.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

OUSM 2-40-S6: Fragments of skull and vertebrae.

Locality: Deep Red Run Locality, Sec. 21, T4S, R12W, Cotton County, Oklahoma.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

OUSM 2-1-S39: Fragmentary skull.

OUSM 2-40-S12: Intercentrum, and tooth.

ROMER, 1952

Locality: Locality 28 of Moran, Corrected elevation 1385', 80'24"W, 39°39'36"N, Battle District, Monongalia County, West Virginia.

Horizon: ?Middle Rockport Limestone, Upper Greene Formation, Dunkard Group.

Biostratigraphy:

Age: Wolfcampanian stage, upper lower to lower middle Rotliegendes Epoch, Early Permian.

Material:

CM 8532: Skull roof.

CM 8535: Fragmentary skull, cleithrum, clavicle and scapulocoracoid of a juvenile.

CM 8534: Glenoid region of a scapulocoracoid.

CM 8582: Jaw fragment.

 

Locality: Locality 8, Ryerson Station, Pittsburgh-West Virginia.

Horizon: Washington Formation, Dunkard Group.

Biostratigraphy:

Age: Wolfcampanian stage, upper lower to lower middle Rotliegendes Epoch, Early Permian.

Material:

CM 8531: Fragmentary skull.

Locality: Locality 33, Pittsburgh-West Virginia.

Horizon: Washington Formation, Dunkard Group.

Biostratigraphy:

Age: Wolfcampanian stage, upper lower to lower middle Rotliegendes Epoch, Early Permian.

Material:

CM 8536: Fragmentary skull and fragmentary lower jaws.

 

Locality: Locality 6, Cameron, Pittsburgh-West Virginia.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

CM 8533: Fragmentary left maxilla, fragmentary skull roof and plate.

 

Locality: Locality 19, Pittsburgh-West Virginia.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

Number: Not given: Fragmentary lower jaw.

Locality: Locality 21, Pittsburgh-West Virginia.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

Number: Not given: Tooth.

Locality: Locality L, Pittsburgh-West Virginia.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

Number: Not given: Distal end of an expanded rib.

_____________________________________________________________________________________

Species: grandis (MARSH, 1878) WILLISTON, 1911
Etymology: Latin, grandis, "full grown."
= Ophiacodon grandis MARSH, 1878
= Eryopsoides grandis (MARSH, 1878) DOUTHITT, 1917

Holotype: MCZ 2731

Locality: "Baldwin bonebed", Arroyo del Agua, Rio Arriba County, New Mexico.

Horizon: Cutler Formation.

Biostratigraphy:

Age: Lower Permian.

Material: Fragmentary skeleton.

Neotype: MCZ 2733 (formerly YPM 826): Skull and vertebrae.

Paratype: MCZ 2732 (formerly YPM 821): Fragmentary skulls and fragmentary dentaries.

Referred material:

LANGSTON 1953

Locality: Spanish queen Mine, Locality V-3855, in a small arroyo on the east side of Canyon San Diego, east of New Mexico state highway 4, about 4 miles south of Jemez Springs, Sandoval County, New Mexico.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

UCMP 39179: Fragmentary skull.

 

Locality: Quarry Butte locality, V-3529, 435 yards S53'W of Loma Salazar, about midway between the Welles and Vanderhoof Quarries, Rio Arriba County, New Mexico.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

UCMP 40090: Right mandible.

UCMP 39079: Several intercentra.

UCMP 39079, 39080: 3 neural arches and spines.

UCMP 39081: A large rib head.

 

Locality: Camp Quarry, V-2814, southeast slope of Loma Salazar about 125 feet from the top, Rio Arriaba County, New Mexico.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

UCMP 40090: Right half of pelvis.

UCMP 40092: Several vertebral elements.

Unnumbered specimens.

 

Locality: Locality UCMP V-3431, Anderson Quarry, 1.3 km southwest of the type locality of Stegotretus agyrus, 3/4 of a mile S55'W of Loma Salazar in a small gulch some 1,385 yards S14'W of the Rio Pueroc Bridge SE 1/4, NW 1/4, SW 1/4,just above massive sandstone lens one mile above confluence of Rio Puerco and Poleo Creek, and 1/4 miles east of Rio Puerco, SW 1/4, Sec. 8, T22N, R3E, near Arroyo del Agua, Rio Arriba County, New Mexico.

Horizon: Upper part of the El Cobre Canyon Formation, Cutler Group (Cutler Formation, Abo Formation).

Biostratigraphy:

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

Material:

UCMP 39181: Right scapulocoracoid.

UCMP 38377: Fragmentary right humerus.

UCMP 39084: Left sacral rib.

UCMP 39087: Left tibia.

UCMP 39085, 39086: Right and left ulnae.

UCMP 39082: Several intercentra.

 

LEWIS & VAUGHN, 1965

Locality: 1/10 to 3/4 mile wide on both sides of the San Miguel River for 4 miles upstream and 4 miles downstream from the town of Placerville, San Miguel County, Colorado.

Horizon: Upper Cutler Formation.

Biostratigraphy:

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

Material:

MCZ 2980: Partial skull and mandible, a series of several vertebrae and fragments of a pectoral girdle.

 

= Eryops sp LUCAS, RINEHART & HUNT, 2005, WERNEBURG, LUCAS, SCHNEIDER & RINEHART, 2010

Locality: NMMNH locality 6121, sec. 18, T24N, R6E, El Cobre Canyon, Rio Arribia County, New Mexico.

Horizon: Lower El Cobre Canyon Formation, Cutler Group.

Biostratigraphy:

Age: Cobrean, Gzelian Epoch, Early Late Pennsylvanian.

Material:

NMMNH P-46379: Fragmentary skull.

 

WERNEBURG, LUCAS, SCHNEIDER, & RINEHART, 2010

Locality: Valley of the Gods, Utah.

Horizon: Cutler Formation (Halgaito Shale), Cutler Group.

Biostratigraphy:

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

Material:

CM 47817: Fragmentary skull.

= Eryops reticulatus COPE, 1881
Etymology: Latin, reticulatus, "reticulated."
= Eryopsoides reticulatus (COPE, 1881) DOUTHIT, 1917

Holotype: AMNH 4786 (YPM 826?)

Locality: El Cobre Canyon, New Mexico.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material: Intercentra.

_____________________________________________________________________________________

Species: avinoffi (ROMER, 1952)
Etymology:
= Glaukerpeton avinoffi ROMER, 1952

Holotype: CM 8539

Locality: Pittsburgh, Alleghany County, Pennsylvania.

Horizon: Conemaugh.

Biostratigraphy:

Age: Late Pennsylvanian.

Material: Fragmentary skull.

Referred material:

MURPHY, 1971

Locality: From a roadcut between 1 and 1.1 miles southeast of the southern end of the Elk River bridge at Sutton, Braxton County, West Virginia.

Horizon: Morgantown Sandstone Member of the mid portion of the Conemaugh Group.

Biostratigraphy:

Age: Early Permian.

Material:

CMNH 11025: Fragmentary skull, fragmentary dentary, right clavicle, right humerus, cervical neural arch and right sacpulocoracoid.