The northwestern limit of the ecoregion is the Sanaga River, a faunal boundary for such species as the golden angwantibo (Arctocebus aureus), white-bellied duiker (Cephalophus leucogaster), mandrill (Mandrillus sphinx), and elegant needle-clawed galago (Euoticus elegantus).    From Wordnik.com.  [Northwestern Congolian lowland forests] Reference

"Transactions of the Geological Society"; in those of the "Zoological," papers on "Arctocebus Calabarensis" and "The Structure of the Stomach in.    From Wordnik.com.  [Life and Letters of Thomas Henry Huxley — Volume 1] Reference

Mammals include Beecroft’s flying squirrel (Anomulurops beecrofti), giant forest squirrel (Protoxerus stangeri), forest elephant (Loxodonta africana cyclotis), golden potto (Arctocebus aureus), Bosman’s potto (Perodicticus potto), bay duiker (Cephalophus dorsalis), and water chevrotain (Hyemoschus aquaticus).    From Wordnik.com.  [Angolan scarp savanna and woodlands] Reference

"Natural History Review" (On "Cetacean Fossils termed Ziphius by Cuvier," in the "Transactions of the Geological Society"; in those of the "Zoological," papers on "Arctocebus Calabarensis" and "The Structure of the Stomach in Desmodus Rufus"; and on the "Osteology of the Genus Glyptodon," in the "Philosophical Transactions."), he wrote.    From Wordnik.com.  [The Life and Letters of Thomas Henry Huxley]