Genus: Prozostrodon BONAPARTE & BARBERENA, 2001
Etymology: Latin, pro-, "before," Greek, zoster, "a girdle or band," and Greek, odon, "tooth"; in reference to the hypothesized antecedant phylognetic position of the taxon.

Species: brasiliensis (BARBERENA, BONAPARTE & TEIXETRA, 1987) BONAPARTE & BARBERENA, 2001
Etymology: In reference to Brazil, the country of origin:
= Thrinaxodon brasiliensis BARBERENA, BONAPARTE & TEIXETRA, 1987

Holotype: PV 0248T

Locality: 200 m northwest of the hill Cerriquito, in a road cut on route BR-216, Municipio of Santa Maria, Rio Grande do Sul State, Brazil.

Horizon: Facies Alemoa of the 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 and lower jaw and fragmentary skeleton.

Referred material:

KERBER, MARTINELLI, RODRIGUES, RIBERIO, SCHULTZ & SOARES, 2020

Locality: Faixa Nova Locality (Santa Maria, RS), Rio Grande do Sul State, Brazil.

Horizon:

Biostratigraphy: Hyperodapedon AZ.

Age: Late Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

CAPP/UFSM 0123: Right lower jaw.

UFGS-PV-0543-T: Anterior portion of the cranium with fragmentary dentary.