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
California Endangered Species Act 2015 CESA lists 132 land plant species as Endangered, 22 as Threatened, and 64 as Rare. No species are currently candidates for listing. California's endangered species act is considered superior to similar acts enacted in other states due to its comprehensive design, its involvement in the pursuit of prevention, and for its cooperative relationships with programs such as Natural Community Conservation Planning (NCCP). California Endangered Species Act In 1970 California became one of the first states in the U.S. to implement an act that conserves and protects endangered species and their environments. The California Endangered Species Act (CESA) declares that