Congopycnodus is an extinct genus of freshwater pycnodontiform fish from the ?Late Jurassic (Kimmeridgian)[1] of the Democratic Republic of the Congo.

[3] Congopycnodus was described on the basis of skull fragments and nuchal horns discovered in the Jurassic Stanleyville Formation near Kisangani, in the Democratic Republic of the Congo.

The holotype, which preserves the top of the skull behind the eyes, was discovered in the Stanleyville Otraco locality, while the three additional paratype specimens, all of which consisting of horns in various states of completeness, were found in the Hamamba river sediments.

The frontal overhangs the eyes and appears to have been covered in long but weak ridges based on the preserved outer layer of the bone.

The parietal, which is the hindmost bone of this region of the skull, is a large element with a broad base lacking any brush-like processes.

It is thought that a similar method could have led pycnodontiforms along the coast of a fracturing Gondwana, particularly the northern and eastern shores of what would later become Africa.

These early Gondwanan pycnodontiforms may have expanded into the breaks that had begun to separate the continent and from there entered the river systems to arrive in the lake that then covered the region around present-day Kisangani.