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
Endangered Species Act of 1969 Endangered Species Act of 1969 The Endangered Species Act of 1969 (Public Law 91-135) was an expansion of the Endangered Species Preservation Act of 1966 which authorized the United States Secretary of the Interior to develop a comprehensive list of species or subspecies of animals threatened with worldwide extinction. It also prohibited the importation from any foreign country any animal-whole or in part, any product, or any egg belonging to a species on that list. Limited exceptions for scientific, educational, zoological, or propagational purposes and for certain cases of commercial "economic hardship" were allowed under strict permitting procedures. A predecessor