Genus: Dinodontosaurus ROMER, 1943
Etymology: Greek, deinos, “terrible”, Greek, odont- (odous), “tooth” and Greek, sauros, “lizard”: Terribel toothed lizard.
= Chanaria COX, 1968
Etymology: In reference to the Chanares River and Formation, Argentina, where the fossil was found.
= Diodontosaurus TUPI CALDAS, 1930 (nomen nudum)
Etymology:

Species: turpior (HUENE, 1935) (nomen dubium)
Etymology:
= Dicynodon turpior HUENE, 1935 (nomen dubium)

Holotype: UT

Locality: "Digging 42", west of the town of Chiniqua, 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: 10 centra, a neural arch, ribs, sacral ribs, parts of both scapulae, both clavicles and humeri, left ulna, right radius, part of both femora, left tibia, left fibula.
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Species: tener (HUENE, 1935)
Etymology: Latin, tener, "soft, delicate."
= Dicynodon tener HUENE, 1935

Lectotype: GPIT-PV-47004 (formelry GPIT/RE/9642)

Locality: "Digging No. 39", Chiniqua, 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: Preparietal, frontals, jugal, postorbital, maxilla, supraoccipital, sphenethnoid, dentary, 2 vertebrae, a few ribs, both scapula and left humerus.

Referred material:

= Dinodontosaurus oliveirai ROMER, 1943
Etymology:

Holotype: MCZ VPRA-1670

Locality: Sanga no. 2, 15 km south of Candelaria, near Chico Morias, 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: Skull, dentary and fragmentary skull.

Referred material:

= Diodontosaurus pendroanon TUPI CALDAS, 1930 (nomen nudum)
Etymology:
= Dinodontosaurus pendroanon (TUPI CALDAS, 1930) COX, 1968

Holotype: DGM 530R

Locality: Sao-Pedro do Sul, 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: Skull.

 


= Dinodontosaurus turpior referred material:

Locality: Sanga no. 1, 15 km south of Candelaria, near Chico Morias, 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:

MCZ 1628: Skull and dentary.

MCZ 1678: Skull.

MCZ 1679:

MCZ 1767:

 

 

Locality: Sanga no. 3, 15 km south of Candelaria, near Chico Morias, 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:

MCZ 1677: Skull of a juvenile.

 


Locality: Sanga do Janguta, 15 km south of Candelaria, near Chico Morias, 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:

MCZ 1687: Fragmentary skull.

 

 

Locality: 30 km South west of Candelaria, 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:

MCZ 1692, 1758, 1759: Fragmentary skeletons.

 

 

Locality: 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:

MCZ 3105:

MCZ 3106:

MCZ 3107:

MCZ 3108:

MCZ 3109:

MCZ 3112:

MCZ 3114:

 


Locality: Argentina.

Horizon: Los Chanares Formation.

Biostratigraphy:

Age: Ladinian Stage, Upper Mid Triassic Epoch, Late Triassic.

Material:

DGM 530R, 309, 213R: Skulls.

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Species: brevirostris COX, 1968
Etymology: Laitn, brevis, "short" and Latin, rostris, "snout."

Holotype: Museo de la Plata, No. 65-XI-14-4

Locality: 6 miles east of the point where the Chanares River emerges into the Campo de Talampaya, in western La Rioja Province, Argentina.

Horizon: Los Chanares Formation.

Biostratigraphy:

Age: Ladinian Stage, Upper Mid Triassic Epoch, Late Triassic.

Material: Nearly complete skull.

Referred material:

MCZ Nos 3452-3457: Skulls.

BYU MR-120: Skull.


= Chanaria platyceps COX, 1968
Etymology: Greek, platys, "flat, broad" and Latin, -ceps, "head."
= Dinodontosaurus platyceps (COX, 1968)

Holotype: Museo de la Plata, No. 65-XI-14-3

Locality: 6 miles east of the point where the Chanares River emerges into the Campo de Talampaya, in western La Rioja Province Province, Argentina.

Horizon: Los Chanares Formation.

Biostratigraphy:

Age: Ladinian Stage, Upper Mid Triassic Epoch, Late Triassic.

Material: Nearly complete skull.

 

 

= Dinodontosaurus platygnathus COX, 1968
Etymology: Greek, platy, "broad, flat, wide" and Greek, gnathus, "jaw."
= Jachaleria platygnathus (COX, 1968)

Holotype: Museo de la Plata, No. 65-XI-14-5

Locality: About 1/14 miles north-north-west of the point where the Gualo River emerges from the Plano del Gualo, in western La Rioja Province, Argentina.

Horizon: Los Chanares Formation.

Biostratigraphy:

Age: Ladinian Stage, Upper Mid Triassic Epoch, Late Triassic.

Material: Fragmentary skull and lower jaw.

Referred material:

Locality: 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:

Divisao de Geologia e Mineralogia, No. 149R: Lower jaw.

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