Cetacean
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Cetaceans are marine mammals belonging to the infraorder Cetacea, a secondarily aquatic clade under the order Artiodactyla that include whales, dolphins, porpoises and extinct groups such as Basilosau
Mother and baby sperm whale
Humpback stellwagen edit
Killerwhales jumping
GRNMS Right Whales
Artiodactyla
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Artiodactyla is an order of placental mammals. Typically, they are ungulates which bear weight equally on two of their five toes. The other three toes are either present, absent, vestigial, or pointin
Cetacean
…Cetaceans are marine mammals belonging to the infraorder Cetacea (), a secondarily aquatic clade under the order Artiodactyla that include whales, dolphins, porpoises and extinct groups such as Basilosaurus. Most cetaceans live in marine environments, particularly the pelagic…
The Cetartiodactyla
Entelodonts were stocky animals with a large head, and were characterized by bony bumps on the lower jaw.
Sivatherium was a relative of giraffes with deer-like forehead ossicones.
Molecular and morphological studies confirmed that cetaceans are the closest living relatives of hippopotamuses.