Species: gracilis HUENE, 1942
Etymology: Latin, gracilis, "slender."

Holotype: BSPG AS XXV 50, 51Grabung 17

Locality: Quarry 17 of the Sanga 6 or 'Zhan Sanga', Sao Jose, Rio Grande so Sul State, South Brazil.

Horizon: Alemoa Member, Santa Maria Sequence 2, Santa Maria Formation, rosario do Sul Group..

Biostratigraphy: Hyperodapedon Assemblage Zone.

Age: ?Ladianian Stage, Upper Mid Triassic Epoch or ?Early Carnian Stage, Lower Late Triassic Epoch, Late Triassic.

Material: Premaxilla, right maxilla, teeth, right lachrymal, nasals, dorsal vertebrae, gastralia, 1 metatarsal.

Rhadinosuchus gracilis modifed from PAES-NETO, LACERDA, EZCURRA, RAUGUST, TROTTEYN, SOARES, SCHULTZ, PRETTO, FRANCISCHINI & MARTINELLI, 2023: A) dorsal; B) lateral and C) ventral views.