Genus: Tanyka PARDO, MARISCANO, SMITH, CISNEROS, ANGIELCZYK, FRÖBISCH, KAMMERER & RICHTER, 2026
Etymology: Guarani, tanyka, “jaw or chin”.

Species: amnicola PARDO, MARISCANO, SMITH, CISNEROS, ANGIELCZYK, FRÖBISCH, KAMMERER & RICHTER, 2026
Etymology: Latin, Amnicola, “living in or next to the river’ the later being a reference to the river bed in Pastos Bons where the holotype was found and also to the presumed aquatic habits of the stem tetrapod.
:= Rhinesuchid CISERNOS et al., 2015

Holotype: MAP-PV 662

Locality: Pedra de Fogo riverbank, MAP locality PB 156, south of Pastos Bons, Maranhao Stae, Brazil.

Horizon: Lower Pedra do Fogo Formation.

Biostratigraphy:

Age: Cisuralian (same as Rotliegendes Epoch) Epoch, Lower Permian.

Material: Nearly complete left mandible.