Squalodontidae closely related to the South Asian river dolphin ("Platanista gangetica"). The genus "Squalodon" was named by French naturalist Jean-Pierre Sylvestre de Grateloup in 1840 based on a jaw fragment he thought belonged to a reptile. Fossils discovered later, nevertheless, showed that this was a toothed whale. In extant odontocetes, however, the dentition is atavistic with all teeth reduced to simple, undifferentiated conical shapes. In squalodonts the teeth resemble those of the archaic whales, Archaeoceti, with conical incisors anteriorly and low-crowned, serrated teeth posteriorly. Squalodontidae Squalodontidae or the shark-toothed dolphins is an extinct family of large toothed whales who had long
Leith's softshell turtle Leith's softshell turtle Leith's softshell turtle ("Nilssonia leithii" ) is a species of turtle found in peninsular Indian rivers including the Bhavani, Godavari, and Moyar Rivers. The type locality is Pune in India. The specific name, "leithii", is in honor of Andrew H. Leith, a physician with the Bombay Sanitary Commission. "Nilssonia leithii" is intermediate between "Nilssonia gangetica" and "Nilssonia hurum". It is like the former in the width of the interorbital apace, the comparatively short mandibular symphysis, and the markings of the head. It is like the latter in the longer and more pointed snout, the absence of a