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Togocetus (“Togo whale”) is a genus of extinct cetacean from the Lutetian (lower Eocene) of Togo, known from a fossilized skeleton discovered a few kilometers north-east of Lomé. Discovery and description
Remingtonocetus domandaensis was named by Gingerich et al. 2001 based on a partial skeleton found in a Lutetian coastal shale in the Domanda Formation of Pakistan. [3] Remingtonocetus is larger, has a broader rostrum, and longer premolars than Andrewsiphius. It is smaller than, has more gracile premolars and molars than Dalanistes.
Chrysocetus is a genus of extinct archaeocete ceteceans belonging to the Basilosauridae that is known from the Late Eocene of the eastern United States and western Africa. . Across its range two species are known, the American Chrysocetus healyorum and the African Chrysocetus fouadassii, named in 2001 and 2015 respecti
Skeletal drawing of Aegicetus. Drawing of Georgiacetus.. The protocetid subfamilies were proposed by Gingerich et al. 2005.They placed Makaracetus in its own subfamily (Makaracetinae) based on its unique adaptations for feeding (including only two incisors in each premaxilla).
Cetacea (/ s ɪ ˈ t eɪ ʃ ə /; from Latin cetus 'whale', from Ancient Greek κῆτος 'huge fish, sea monster') is an infraorder of aquatic mammals belonging to the order Artiodactyla that includes whales, dolphins and porpoises.
Basilosaurids, which had tiny hind limbs and flipper-shaped fore limbs, were obligatorily aquatic and came to dominate the oceans. They still lacked the echolocation and baleen of modern odontocetes and mysticeti. [7] Basilosaurids and dorudontids are the oldest obligate aquatic cetaceans for which the entire skeleton is known.
Cetacea (/ s ɪ ˈ t eɪ ʃ ə /; from Latin cetus 'whale', from Ancient Greek κῆτος 'huge fish, sea monster') [3] is an infraorder of aquatic mammals belonging to the order Artiodactyla that includes whales, dolphins and porpoises.
The family Balaenidae, the right whales, contains two genera and four species. All right whales have no ventral grooves; a distinctive head shape with a strongly arched, narrow rostrum, bowed lower jaw; lower lips that enfold the sides and front of the rostrum; and long, narrow, elastic baleen plates (up to nine times longer than wide) with fine baleen fringes.