The Mbielu-Mbielu-Mbielu is a cryptid reported from the Likouala Region of theRepublic of the Congo. Only a few claimed sightings have been reported, at the villages of Bounila and Ebolo, which were collected by the cryptozoologist Roy Mackal. No physical evidence for the creature exists.
Apparently herbivorous, it is described as "the animal with planks growing out of its back" - which has led some writers on the subject to suggest one of the Stegosauridae, most likely a Kentrosaurus. The animal appears to be aquatic, and has mostly green algal growth covering the "planks".
Unknown Dinosaur-like animal of Central
Etymology: Possibly Lingala (Bantu).
Physical description: Has large “planks” growing
out of its back, which is covered with green,
Behavior: Almost always seen in water with its
back protruding. Active in the late afternoon.
Distribution: Likouala River, Republic of the
Significant sightings: A Mbielu-mbielu-mbielu
was seen near Epéna at a place called Ikekesse.
Green vegetable growth was visible on its back
as it came out of the water.
Odette Gesonget, a woman of Bouanila, Republic
of the Congo, selected a picture of a
Stegosaurus from books provided by Roy Mackal
in 1980 as an animal that her parents had told
Possible explanation: A surviving stegosaur, a
group of dinosaurs best known from the Late
Jurassic, 150 million years ago, suggested by
Roy Mackal. An African fossil genus, the 20-
foot Kentrosaurus, has been found in abundance
in the Tendaguru beds of Tanzania and had six
pairs of erect plates along the neck and upper
back, followed by three pairs of flat spines and
five pairs of large spines on the tail.