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Species of the infraorder Cetacea A phylogenetic tree showing the relationships among cetacean families. [1]The evolution of cetaceans is thought to have begun in the Indian subcontinent from even-toed ungulates (Artiodactyla) 50 million years ago (mya) and to have proceeded over a period of at least 15 million years. [2]
The following is a list of currently existing (or, in the jargon of taxonomy) 'extant' species of the infraorder cetacea (for extinct cetacean species, see the list of extinct cetaceans). The list is organized taxonomically into parvorders, superfamilies when applicable, families, subfamilies when applicable, genus, and then species.
The sperm whale or cachalot (Physeter macrocephalus) is the largest of the toothed whales and the largest toothed predator.It is the only living member of the genus Physeter and one of three extant species in the sperm whale family, along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia.
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.
Google on Monday removed derogatory reviews about McDonald's after the suspect in the killing of UnitedHealth executive Brian Thompson was arrested at its restaurant in Altoona, Pennsylvania ...
According to the New York Times, here's exactly how to play Strands: Find theme words to fill the board. Theme words stay highlighted in blue when found.
Katie Holmes is showing her appreciation for her daughter as she celebrates her 46th birthday.. On Wednesday, Dec. 18, the actress shared a snap to her Instagram Stories of a bouquet of purple ...
A viewer capable of viewing multiple overlaid trees. All [23] FigTree: Simple Java tree viewer able to read newick and nexus tree files. Can be used to color branches and produce vector artwork. All [24] JEvTrace A multivalent browser for sequence alignment, phylogeny, and structure.