Genus: Infernovenator MANN, PARDO & MADDIN, 2019
Etymology: Latin, infernum, "hell or underworld"; referring to the proposed fossorial habit, and Latin, venator, "hunter".

Species: steenae MANN, PARDO & MADDIN, 2019
Etymology: In honor of Margaret Clair Steen Brough, who studied Palaeozoic Tetrapods.

Holotype: GMNH PT 4203

Locality: Pit 11, near Braidwood, Mazon Creek, 10 km southeast of Morris, Grundy County (Will ro Kankankee County?), Illinois.

Horizon: Carbondale Formation, Frances Creek Shale.

Biostratigraphy:

Age: Myachkovskian Stage, Westphalian D, Lower Upper Silesian, Desmoniensean, Myachkovskian Stage, upper Moscovian Epoch, Late Pennsylvanian (Late Carboniferous).

Material: Nearly complete cranial and postcranial skeleton, preserved as a mould of teh dorsal aspect, anterior limbs poorly developed, posteriorlimbs only represented by single left femur, tail incompletely preserved posteriorly.