Genus: Exaeretodon CABRERA, 1943
Etymology: Greek, exairetos, “excellent, distinguished” and Greek, odon, “tooth”:
Extraordinary tooth.
= Ischignathus BONPARTE, 1963
Etymology: In reference to the Late Triassic Ischigualasto Formation in Argentina.
= Proexaeretodon BONAPARTE, 1963
Etymology: Greek, pro-, “before”, + Exaerotodon: Before Exaerotodon.
= Theropsis CABRERA 1943
Etymology: Greek, ther, “beast (mammal)” and Greek, opsis, “appearance”:
Mammal-look.
Species: argentinus (CABRERA, 1943) BONAPARTE, 1962
Etymology: In reference to Argentina, the country of orign.
= Belesodon? argentinus CABRERA, 1943
= Traversodon argentinus (CABRERA, 1943)
Holotype: Coleccion Paleontologia Museuo La Plata, 43-VII-14-2
Locality: Hoyada de Ischigualastro, San Juan Province, Argentina.
Horizon: Ischigualsto Formation.
Biostratigraphy:
Age: Early Norian Stage, Late Triassic Epoch, Late Triassic.
Material: Fragmentary skull.
Referred material:
MACN 18063: Incomplete skull and lower jaw.
MACN 18114: Good skull and articulated lower jaw.
PVL 2473: Skull lacking the left zygomatic arch, showing 2 postcaines in each row.
PVL 2064: Incomplete skull and mandible, with endocranial cast.
PVL 2088: Skull with nasal and cephalic endocasts.
KUBO, YAMADA & KUBO, 2017
PVSJ 74, 109, 623, 702, 707, 1091: Fragmentary skulls.
WYND, ABDALA & NESBITT, 2022
MACN 18193: Unprepared skull.
MCZ VPRA 338-58M: Skull missing premaxilla.
MCZ VPRA 4472: Skull with dorsal surface enased in plaster.
MCZ VPRA 4478: Unprepared skull with right zygoma broken, left orbit borken and soem anteroposterior curshing.
MCZ VPRA 4494: Lateral shear with displace muzzle bones, lower jaws fused to the skull.
MCZ VPRA 4505: Skull with missing right zygoma.
PVL 2067, 2080: Skulls with right side abraded with zygoma missing.
PVSJ 103: Skull with slight lateral shear.
CHATTERJEE, 1982
Locality:
Horizon:
Biostratigraphy:
Age:
Material:
MCZ 4074: Skull and dentary.
= Exaeretodon frenguellii CABRERA, 1943
Etymology:Holotype: Coleccion Paleontlogia Museo La Plata, 43-VII-14-3
Locality: Hoyada de Ischigualasto, San Juan Province, Argentina.
Horizon: Ischigualsto Formation.
Biostratigraphy:
Age: Early Norian Stage, Late Triassic Epoch, Late Triassic.
Material: Fragmentary skull.
Referred material:
PVL 1893, PVL 2056: Skulls.
PVL 2461: Fragmentary mandible.
PVL 2473: Fragmentary skull.
PVL 2109: Skull and mandible partially articulated, lacking the right zygomatic arch.
PVL 2093: Left mandibular ramus of large size, with 2 postcaniens, 1 of them erupting.
PVL 2471: Left posterio-lateral portion of the skull, with the posterior part of the dentary and postdentary bones articulated.
PVL 2458: Fragmentary maxillary and post canine teeth.
PVL 1562: Fragmentary skull of an adult.
PVL 2563: Fragmentary skull of a juvenile.
MLP 61-VIII-2-23, 61-VIII-2-22: Fragmentary skulls.
PVL 1897: Anterior portioin of both mandublar rami.
PVL 2468: Mandible with complete dentition.
ABDLA, 2000
PVL 1868 : Distal portion of a femur.
PVL 1875: Mandibular fragment with teeth, one of them erupting.
PVL 1898: Maxillary fragment with postcanines.
PVL 1899: Maxillary fragment with incisors, canines, and postcanaines.
PVL 2004: 3 postcanines.
PVL 2066: Mandible of a juvenile, lacking the anterior portion.
PVL 2079: Large skull, with maximum number of postcanines (11) for the species.
PVL 2082: Skull lacking the left zygomatic arch.
PVL 2083: Skull and mandible in occlusion, with upper tooth row visible laterally.
PVL 2085: Large skull.
PVL 2087: Small skull with minimum number of postcanines (6) for the species.
PVL 2089: Symphseal region of both mandibles with incisors.
PVL 2155: Numerous isolated postcanines with breaks at various leveles of crowns and roots.
PVL 2162: Complete femur, tibia, and fibula, with preserved fragments of the ilium.
PVL 2459: Fragment of mandible with well preserved postcanines, some of them recently erupted.
PVL 2462: Small postcanine erupting.
PVL 2464: Well preserved, incomplete femur.
PVL. 2467: Right mandibular ramus with 6 postcanines and posterior alveolus, complete humerus, distal part of humerus, complete scapular blade, procoracoids, 2 clavicles, interclavicles, radius, ulna, and fragment of femur.
PVL 2475: Large mandible bearing a complete tooth row.
PVL 2503: Right portions of skull of a juvenile, with well preserved teeth, both partially covered, fragmentary mandible with postcaines, stapes and distal portion of a humerus.
PVL 2548: Proximal fragment of a femur.
PVL 2554: Incoomplete skull and an almost complete postcaranial skeleton, well preserved.
PVL 2567: Skull lacking the left zygomatic arch, with an incomplete mandible.
PVL 2579: Portion of pelvis, incomplete femur and sacral vertebrae.
PVL 2580: Nasal caviety endocast.
PVL 2582: Ulna.
PVL 2698: 2 vertebrae and 6 incomplete ribs.
PVL 2746: Incomplete mandible with 5 postcanines, scapula, coracoids, incomplete procoracoids, and 2 humeral fragments.
PVL 2750: Large skull and mandible, pelvic girdle and indeterminate elements.
PVL 3435: Anterior portion of mandible with 4 postcanines.
PVL 3816: Skull with tooth series, 2 fragments of mandibles, one with 6 and the other with 3 worn postcanines, and an isolated postcanine.
PVL 3817: Right pelvic girdle.
PVL 4389: Large incomplete mandible.
ABDALA & MALABARBA, 2007
PVL 5631: Fragmentary skull.
= Theropsis robusta CABRERA, 1943
Etymology: Latin, robustus, "robust, strong."Holotype:
Museo de La Plata 43-VII-14-4
Locality: Hoyada de Ischigualastro, San Juan Province, Argentina.
Horizon: Ischigualsto Formation.
Biostratigraphy:
Age: Early Norian Stage, Late Triassic Epoch, Late Triassic.
Material: Fragmentary skull and mandible.
= Ischignathus sudamericanus BONPARTE, 1963
Etymology: In reference to South America.Holotype: PVL 2564
Locality: Hoyada de Ischigualsto, San Juan Province, Argentina.
Horizon: Lower third of the Ischigualsto Formation.
Biostratigraphy:
Age: Early Norian Stage, Late Triassic Epoch, Late Triassic.
Material: Skull and dentary.
Referred material:
ABDLA, 2000
PVL 2552: Incomplete mandible with 6 postcanines.
PVL 3803: Incomplete mandible.
= Exaeretodon vincei (BONAPARTE, 1963)
Etymology:
= Proexaeretodon vincei BONAPARTE, 1963
Holotype: PVL 2565
Locality: Hoyada de Ischigualasto, San Juan Province, Argentina.
Horizon: Lower third of the Ischigualsto Formation.
Biostratigraphy:
Age: Early Norian Stage, Late Triassic Epoch, Late Triassic.
Material: Skull lacking the right zygomatic arch, and a right femur.
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Species: statisticae
CHATTERJEE, 1982
Etymology:
Holotype: ISIR 304
Locality: Venkatapur village, District of Adilabad, Andhra Pradesh State, South India.
Horizon: Maleri Formation.
Biostratigraphy:
Age: Early Norian Stage, Late Triassic Epoch, Late Triassic.
Material: Fragmentary skull and dentary.
Referred material:
ISIR 303: A few mandibular fragments.
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Species: riograndensis ABDALA, BARBERENA & DORNELLES, 2002
Etymology: Referred to the State of Rio Grande do Sul, Brazil, where the Santa
Maria Formation crops out.
Holotype: MCP 1522 PV
Locality: KM 136 of the railroad Br 287, 6 km west of the Botucarai hill, Candelaria District, Rio Grande do Sul State, Brazil.
Horizon: Santa Maria Formation (Caturrita Formation?).
Biostratigraphy:
Age: Late Ladinian Substage, Late Landian Stage, Uppermost Mid Triassic Epoch, Middle Triassic, or ?Julian Substage, ?Early Carnian Stage, Lower Late Triassic Epoch, Late Triassic.
Material: Complete skull plus poratlas and atlas arches on the occiput, dislocated from their anatomical position.
Referred material:
MACN 18114, 18125, MCZ 111-64A, 334-58M, 377-58M, 4074, 4468, 4469, 4470, 4480, 4482, 4483, 4486, 4493, 4500, 4502, 4510, 4781, MLP 43-VII-14-2, 43-VII-14-3, PVL 2056, 2079, 2082, 2083, 2094, 2473, 2554, 2565, 2750, PVSJ 157:
OLIVEIRA, SCHULTZ & SOARES, 2007
Locality: 'Sitio Janner' site, Agudo, 53°17'30.50"W, 29°39'09.68"W, Rio Grande do Sul State, Brazil.
Horizon: Santa Maria Formation (Caturrita Formation?).
Biostratigraphy:
Age: Late Ladinian Substage, Late Landian Stage, Uppermost Mid Triassic Epoch, Middle Triassic, or ?Julian Substage, ?Early Carnian Stage, Lower Late Triassic Epoch, Late Triassic.
Material:
UFRGS JPV-0715-T: Fragmentary skull and Fragmentary skeleton.