Arktocara ("Platanista gangetica") which inhabits the tropics, making it its closest living relative. Allodelphinidae also included the genera "Allodelphis", "Goedertius", "Ninjadelphis", and "Zarhinocetus". Its discovery further reinforces the theory that the Platanistoidea river dolphins originated in the oceans. Of the characteristics it shared with other platanistoids was a cylindrical projection of the periotic bone in the ear, deeply grooved rostral sutures on the beak, the widening of the cranium, a depression on the roof of the orbit in the eye socket, a smaller exposed palatine bone in the roof of the mouth, an elongated and convex spine in the tympanic bulla
Catacroptera dark brown underside. The larvae feed on "Justicia protracta", "Barleria stuhlmanni", "Ruellia cordata", "Asystasia gangetica", "Barleria opaca", "Ruellia togoensis", "Chaetacanthus setiger", "Asclepias" and "Phaulopsis" species. Catacroptera Catacroptera is a monotypic butterfly genus of the subfamily Nymphalinae in the family Nymphalidae found in sub-Saharan Africa. The habitat consists of grassland and savanna. Adults are on wing year round, but from September to April in cooler areas. The single species, Catacroptera cloanthe, the pirate, has a wingspan of 50 to 63 mm. Its dorsal colour is orange with rows of dark bands in the forewing and blue spots surrounded by darker brown