Edenopteron keithcrooki is known from remains excavated from the Worange Point Formation, near the town of Eden on the coast of New South Wales in 2008.

The specific name honors Dr. Keith Crook of the Australian National University for his discovery of several fossil sites in New South Wales and his key role in helping to map the geology around Eden.

[1] The holotype consists of numerous semi-articulated remains, including an incomplete skull roof, snout, palate, cheeks, lower jaws and associated dermal bones, a left shoulder girdle, and assorted scales.

Edenopteron possessed dentary fangs and premaxillary tusks, which are presumed to be derived traits for other large tristichopterids.

"[3] Edenopteron is assigned to the Gondwanan tristichopterid subfamily Mandageriinae due to similarities shared with Cabonnichthys and Mandageria, including paired vomers in the palate, submandibular bones overlapping ventral jaw margin, and scales ornamented with widely-spaced grooves.