Genus: Eobatrachus MARSH, 1887
Etymology: Greek, eo, "early" and Greek, batrachos, "frog."

Species: agilis MARSH, 1887
Etymology: Latin, agilis, "agile."

Holotype: YPM 1862

Locality: Reeds YPM Quarry 9, (Mammal Quarry), T22N, R77W, Sec. 12, Como Bluff, Albany County, Wyoming.

Horizon: Upper or Brushy Basin member, Morrison Formation.

Biostratigraphy: Zone 3.

Age: Comobluffian age, Kimmeridgian Stage, uppermost Malm Epoch, Late Jurassic.

Material: Distal portion of a humerus.

Referred material:

YPM 1568: Fragmentary ilium.

YPM 1862: Femur.

YPM 1394: Fragmentary tibo-fibula.

YPM 1863: Fragmentary humerus.

YPM 1763: Fragmentary vertebra.

YPM 1687: Fragmentary urostyle.