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The tooth sockets increased in size from the first to the fourth and then decreased, the fourth being the largest at around 197 mm (7.8 in) in diameter in the upper jaws, which is the largest of any known whale species. The tooth sockets were smaller in the lower jaw than they were in the upper jaw, and they were circular in shape, except for ...
Pages in category "Prehistoric toothed whales" The following 54 pages are in this category, out of 54 total. This list may not reflect recent changes. A. Acrophyseter;
Odobenocetops (/ ˌ oʊ d ə b iː ˈ n ɒ s ɪ t ɒ p s /) is an extinct genus of small toothed whale known from Chile and Peru.Its fossils are found in Miocene-aged marine strata of the Bahía Inglesa Formation and Pisco Formation.
The adaptation of echolocation and enhanced fat synthesis in blubber occurred when toothed whales split apart from baleen whales, and distinguishes modern toothed whales from fully aquatic archaeocetes. This happened around 34 mya. [9] Unlike toothed whales, baleen whales do not have wax ester deposits nor branched fatty chain acids in their ...
The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals, the even-toed ungulates. The earliest cetaceans were still hoofed mammals. These early cetaceans became gradually better adapted for swimming than for walking on land, finally evolving into fully marine cetaceans.
WELLINGTON, New Zealand (AP) — It is the world’s rarest whale, with only seven of its kind ever spotted.Almost nothing is known about the enigmatic species. But on Monday a small group of scientists and cultural experts in New Zealand clustered around a near-perfectly preserved spade-toothed whale hoping to decode decades of mystery.
Basilosaurus (meaning "king lizard") is a genus of large, predatory, prehistoric archaeocete whale from the late Eocene, approximately 41.3 to 33.9 million years ago (mya). First described in 1834, it was the first archaeocete and prehistoric whale known to science. [2] Fossils attributed to the type species B. cetoides were discovered in the ...
According to the DOC, the spade-toothed whale was first documented in 1874 from lower jaw and teeth samples collected on Pitt Island, around 500 miles off New Zealand’s west coast. Other ...