Genus: Acheloma COPE, 1882
Etymology:
= Acehloma ARIAS, MOONEY, BEVITT & REISZ, 2024 (sic)
= Trematops WILLISTON, 1909
Etymology:
Species: cumminsi COPE, 1882
Etymology:
= Trematops willistoni (COPE, 1882) WILLISTON, 1909
Holotype: AMNH 4205
Locality: Coffee Creek, Baylor County, Texas.
Horizon: Wichita Group.
Biostratigraphy:
Age: Early Permian.
Material: Fragmentary skull and dentary.
Referred material:
MCZ 1766: Skull.
Locality: 1 mile south of Archer City, 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:
MCZ 1414: Skull.
MCZ 1413: Fragmentary skeleton.
MCZ 1490: Fragmentary skull and fragmentary skeleton.
CNHM UC 482: Skull.
= Trematops milleri WILLISTON, 1909
Etymology:Holotype: FMNH UC 640
Locality: Bushy Creek, Baylor County, Texas.
Horizon: Clear Fork Formation, Clear Fork Group.
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material; Fragmentary skull and dentary, and fragmentary skeleton.
Referred material:
Locality: East Coffee Creek, "Broiliellus" bone bed, 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:
FMNH UC 1759, FMNH UC 1760: Skull and lower jaws.
FMNH UC 282, FMNH UC 283: Femurs.
Locality: East Coffee Creek, Baylor County, Texas.
Horizon: Clear Fork Formation, Clear Fork Group.
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material:
FMNH UC 1756: Fragmentary skull and fragmentary skeleton.
OLSON
Locality: East Coffee 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: Nearly complete skull and skeleton.
OLSON 1967
Locality: South Snyder Site, 10 miles south and a little east of Snyder, Tilman County, Oklahoma.
Horizon: Clear Fork Formation, Clear Fork Group.
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material:
OUSM 2-1-S36: Fragmentary skull and jaws.
= Trematops thomasi MEHL, 1926
Etymology:
= Acheloma thomasi (MEHL, 1926)Holotype: OMNH 02110 (no number given in the original description, formerly OUSM 201-S36) (incorrectly stated as from the University of Missouri).
Locality: OMNH V171, Kiowa county, Oklahoma (South Synder Site, 10 miles south and somewhat east of Snyder, Tilman County, Oklahoma?).
Horizon: Arroyo Formation (Clear Fork Formation, Clear Fork Group?).
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material: Anterior part of skull and lower jaws.
Referred martial:
Locality: West Coffee Creek, Baylor County, Texas.
Horizon: Clear Fork Formation, Clear Fork Group.
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material:
FMNH UM 1585: Fragmentary skull.
= Trematops willistoni OLSON, 1941
Etymology: In honor of Samuel Wendell Williston.
= Acheloma willistoni (OLSON, 1941)Holotype: FMNH UC 1584
Locality: West Coffee Creek, Baylor County, Texas.
Horizon: Clear Fork Formation, Clear Fork Group.
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material: Skull and lower jaws with associated postcranial material.
= Trematops stonei OLSON, 1970
Etymology:
= Acheloma stonei (OLSON, 1970)Holotype: FMNH
Locality: Roadcut on Ohio route 7, at Marietta, 0.7 mile southwest of US Route 50A, Washington County, Ohio.
Horizon: Creston Shale (red Beds) of Washington Formation, Dunkard Group.
Biostratigraphy:
Age: Wolfcampanian stage, upper lower to lower middle Rotliegendes Epoch, Early Permian.
Material: A fragmentary skull.
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Species: dunni POLLEY & REISZ, 2011
Etymology: In honor of Brent Dunn, who has graciously collected and donated
several specimens from the Dolese Brothers Co. limestone quarry for study.
= Acehloma dunni ARIAS, MOONEY, BEVITT & REISZ, 2024 (sic)
Holotype: OMNH 73281
Locality: Fort Sill, OMNH Locality V51, Dolese Brothers limestone quarry at Richards Spur, Fissure Fills, just west of U.S. Highways 62 & 281, 10.5 miles south of Apache, 6 miles north of Fort Sill, SW 1/2, Sec. 31, T4N, R11W, Comanche 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: Nearly complete skull with associated atlas-axis complex and partial lower jaw.
Referred material:
BMRP 2007.3.1: Snout.
BMRP 2007.3.4: Small skull.
OMNH 54365: Jaw articulation.
OMNH 52545: Right humerus.
OMNH 73514: Pelvic girdle.
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Species: cryptatheria ARIAS, MOONEY, BEVITT & REISZ, 2024b
= Acehloma sp nova ARIAS, MOONEY, BEVITT & REISZ, 2024a
Etymology: Greek, kruptos, "hidden" and Greek, ther-, "beast".
Holotype: ROMVP 88291
Locality: Fort Sill, OMNH Locality V51, Dolese Brothers limestone quarry at Richards Spur, Fissure Fills, just west of U.S. Highways 62 & 281, 10.5 miles south of Apache, 6 miles north of Fort Sill, SW 1/2, Sec. 31, T4N, R11W, Comanche 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: Skull.