Genus: Mirischia NAISH, MARTILL & FREY, 2004
Etymology: Latin, mir, "wonderful" and Greek, iskhion , "hip joint": pertaining to the pelvis (and not the ischia alone).

Species: asymmetrica NAISH, MARTILL & FREY 2004
Etymology: asymmetrica refers to the fact that in the specimen the left ischium differs from its right counterpart
= Coelurosauria incertae sedis MARTILL, FREY, SUES, & CRUICKSHANK, 2000

Holotype: SMNK 2349

Locality: Region of Araripina (exact locality unknown), Chapada do Araripe, Pernambuco, northeastern Brazil.

Horizon: Romualdo Member, Santana Formation, Araripe Group.

Biostratigraphy:

Age: Late Aptian or Early Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material: Last dorsal vertebra with 1 attached rib, 1 dorsosacral and 2 sacral vertebrae with part of a third sacral, several incomplete gastralia, more or less articulated pelvis and proximal parts of hindlimbs including partial left and right ilia, left and right pubes, slightly damaged left and right ischia, incomplete left and right femora, proximal ends of right tibia and fibula, and portion of the lithified intestinal tract.

_____________________________________________________________________________________