Species: multicinctus COPE, 1895
Etymology:
Holotype: AMNH 4593
Locality: Unknown, Texas.
Horizon:
Biostratigraphy:
Age: Early Permian.
Material: Articulated part of the armored carapace, vertebral column and ribs.
Referred material:
DeMAR 1968
Locality: Hog Creek, Baylor County, Texas.
Horizon: Arroyo Formation, Clear Fork Group.
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material:
MCZ 1163 (not individually numbered): Numerous limb bones, armor fragments and skull parts.
FM 1204: Articulated part of the dorsal armor.
Locality: Indian River, Baylor County, Texas.Horizon: Arroyo Formation, Clear Fork Group.
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material:
MCZ 2122-2: Some what disarticulated skeletons without skulls preserved beneath articulated carapaces.
MCZ 2122-3: Some what disarticulated skeleton with skull preserved beneath carapace.
MCZ 2122-5: Partial skeleton, crushed, beneath and articulated carapace.
MCZ 2122-12: Partial skull and partial disarticulated carapace.
MCZ 2122-19: Partial skull and skeleton crushed against articulated carapace.
MCZ 2122-21: Partial skull and skeleton crushed beneath an articulated carapace.
MCZ 2122-22 (Not individually numbered): Numerous limb bones, armor fragments and skull parts.
Locality: Baylor County, Texas.Horizon: Arroyo Formation, Clear Fork Group.
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material:
NM 21904 (Not individually numbered): Articulated carapace and part of the skeleton, a large portion of the posterior part of the skull and braincase, and other miscellaneous cranial and skeletal fragments.
Locality: Coffee Creek, Baylor County, Texas.Horizon: Arroyo Formation, Clear Fork Group.
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material:
NM 1555: Skull, vertebral column, armored carapace and foot.
FM UC 648: Carapace, skull roof, lower jaws, shoulder girdle humerus, ulna and femur.
Locality: From Olson's Broiliellus "pocket", East Coffee Creek, Baylor County, Texas.
Horizon: Arroyo Formation, Clear Fork Group.
Biostratigraphy:
Age: Artinskian Stage, Lower Rotliegendes Epoch, Early Permian.
Material:
FM UR813: Articulated part of the dorsal armor and vertebral column.
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Species: angustus CARROLL, 1964
Etymology:
Holotype: MCZ 1695
Locality: Archer City bone bed, 1 mile southwest of Archer City, Archer County, Texas.
Horizon: Archer City Formation (formerly Putnam Formation), Wichita Group.
Biostratigraphy:
Age: Leonardian series, Upper Rotilegendes Epoch, Early Permian.
Material: Partial skeleton including right rear portion of skull, vertebral
column from atlas to 3rd postsacral with ribs and dermal armor, pelvic and
pectoral girdles, and limb fragments.