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Full-Text Articles in Life Sciences
The Evolutionary History Of Cetacean Brain And Body Size, Stephen H. Montgomery, Jonathan H. Geisler, Michael R. Mcgowen, Charlotte Fox, Lori Marino, John Gatesy
The Evolutionary History Of Cetacean Brain And Body Size, Stephen H. Montgomery, Jonathan H. Geisler, Michael R. Mcgowen, Charlotte Fox, Lori Marino, John Gatesy
Lori Marino, PhD
Cetaceans rival primates in brain size relative to body size and include species with the largest brains and biggest bodies to have ever evolved. Cetaceans are remarkably diverse, varying in both phenotypes by several orders of magnitude, with notable differences between the two extant suborders, Mysticeti and Odontoceti.We analyzed the evolutionary history of brain and body mass, and relative brain size measured by the encephalization quotient (EQ), using a data set of extinct and extant taxa to capture temporal variation in the mode and direction of evolution. Our results suggest that cetacean brain and body mass evolved under strong directional …
Carnivores From The Late Miocene Locality Of Hayranlı (Hayranlı, Sivas, Turkey), Şaki̇r Önder Özkurt, Erksi̇n Güleç, Ahmet Cem Erkman
Carnivores From The Late Miocene Locality Of Hayranlı (Hayranlı, Sivas, Turkey), Şaki̇r Önder Özkurt, Erksi̇n Güleç, Ahmet Cem Erkman
Turkish Journal of Zoology
The locality of Hayranlı-Sivas is situated in the central Anatolian plateau (Sivas, Turkey) and includes many fossil remains, including carnivores collected from 2 different spots. The aim of this study is to contribute to knowledge of carnivore evolution in Turkey based on the fossil specimens in Hayranlı-Sivas. The studied collection indicates the presence of the following taxa: Hyaenictitherium wongii, Hyaenictitherium intuberculatum, Lycyaena dubia, and Machairodus giganteus. L. Dubia is the first record from Anatolia. The material of each taxon was described and determined by comparison with other materials from various Eurasian localities. During the Early or Middle Turolian 9-7 Ma. …