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Vestibular evidence for the evolution of aquatic behaviour in early cetaceans
It is hypothesized that the unparalleled modification of the semicircular canal system represented a key ‘point of no return’ event in early cetacean evolution, leading to full independence from life on land. Expand
Skeletons of terrestrial cetaceans and the relationship of whales to artiodactyls
Cladistic analysis of the skeletons of two early Eocene pakicetid cetaceans, the fox-sized Ichthyolestes pinfoldi, and the wolf-sized Pakicetus attocki, indicates that cetACEans are more closely related to artiodactyls than to any mesonychian, and supports monophyly of artiodACTyls. Expand
Eocene mammal faunas from northern Indo-Pakistan
Abstract We present a summary of the Eocene mammal faunas of Indo-Pakistan based on study of the known faunas and new collections. New taxa described here are the carpolestid ParvocristesExpand
Fossil Evidence for the Origin of Aquatic Locomotion in Archaeocete Whales
The fossil indicates that archaic whales swam by undulating their vertebral column, thus forcing their feet up and down in a way similar to modern otters. Expand
Additional holotype remains of Ambulocetus natans (Cetacea, Ambulocetidae), and their implications for locomotion in early whales
Contin excavation at the type locality of Ambulocetus natans led to the recovery of a majority of the axial skeleton of the holotype, including both innominates, the sacrum, and most of the thoracic cage and thoracolumbar vertebral column, suggesting that previous estimates of spinal length derived from models of mesonychid ancestry may be inaccurate. Expand
Anthracobunids from the Middle Eocene of India and Pakistan Are Stem Perissodactyls
Analyses of stable isotopes and long bone geometry together suggest that most anthracobunids fed on land, but spent a considerable amount of time near water, which expands the understanding of stem perissodactyl diversity and sheds new light on perissODactyl origins. Expand
Eocene evolution of whale hearing
The origin of whales (order Cetacea) is one of the best-documented examples of macroevolutionary change in vertebrates, and the fossil record indicates that this evolutionary transition took less than 15 million years. Expand
Isotopic Approaches to Understanding the Terrestrial-to-Marine Transition of the Earliest Cetaceans
The fossil record is replete with examples of evolutionary transitions between marine and freshwater environments, in both directions. Perhaps the most striking and best documented example of such aExpand