Species: mlynarskii ESTES, 1988
Etymology: Patronym for Marian Mlynarski, honoring his many years of work in Paleontology.
= Allognathosuchus mlynarskii (ESTES, 1988) LUCAS & SULLIVAN, 2003

Holotype: PU 17258

Locality: White Butte site, SW ¼, Sec. 29, NW ¼ sec. 32, T139N, R97W, Stark County, North Dakota.

Horizon: Golden Valley Formation.

Biostratigraphy:

Age: Wastachian, Eocene Epoch, Paleogene Period, Lower Tertiary Subera, Lower Cenozoic Era.

Material: A crushed skull, isolated vertebrae, and osteoscutes.

Referred material:

PU 17369: Right dentary.

PU 17370: Maxillary fragments, maxilla, and premaxilla.

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