Eastern gorilla
There are two recognised subspecies of eastern gorilla: the mountain gorilla ("Gorilla beringei beringei") of the volcanic slopes of Rwanda, Uganda and eastern Democratic Republic of Congo; and Grauer's gorilla or eastern lowland gorilla ("Gorilla beringei graueri") in eastern Democratic Republic of Congo.
Largest prehistoric animals
There is much controversy over the largest-known of these reptiles. Fossil remains of a pliosaur nicknamed as "Predator X" have been discovered and excavated from Norway in 2008. This pliosaur has been estimated at in length and in weight. However, in 2002, a team of paleontologists in Mexico discovered the remains of a pliosaur nicknamed as "Monster of Aramberri", which is also estimated at in length. This species is, however, claimed to be a juvenile and has been attacked by a larger pliosaur. Some media sources claimed that "Monster of Aramberri" was a "Liopleurodon" but its species is unconfirmed thus far.
Another very large pliosaur was "Pliosaurus macromerus", known from a single incomplete mandible. It may have reached , assuming the skull was about 17% of the total body length.