South Asian river dolphin display the variances needed to support their classification as separate species. Thus, at present, a single species with two subspecies is recognized in the genus "Platanista", "P. g. gangetica" (Ganges river dolphin) and "P. g. minor" (Indus river dolphin). An assessment of divergence rates in mitochondrial DNA of the two subspecies indicates that they diverged from a common ancestor around 550,000 years ago. This ancestor is thought to have been a marine Platanistid inhabiting the epi-continental seas in South Asia during the sea level rises in the middle Miocene. The earliest fossil identified as belonging to the species is only
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