|
Pseudorca
''Pseudorca'' is a genus of cetacea Cetacea (; , ) is an infraorder of aquatic mammals that includes whales, dolphins, and porpoises. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively carnivorous diet. They propel them ...ns with three members which include '' Pseudorca yokoyamai'', '' Pseudorca yuanliensis'' and '' Pseudorca crassidens'', of which ''P. crassidens'' (commonly known as the false killer whale) is the only extant member. ''Pseudorca Crassidens'' travel in pods of 10-20 but may belong to larger schools around 100 and more ''Pseudorca yuanliensis'' is found in Pliocene layers in Yuanli, Taiwan, while ''Pseudorca yokoyamai'' is found in both Pliocene and Pleistocene rocks in Japan. References Oceanic dolphins Cetacean genera Mammal genera with one living species Taxa named by Johannes Theodor Reinhardt {{Cetacean-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudorca Crassidens
''Pseudorca'' is a genus of cetaceans with three members which include ''Pseudorca yokoyamai'', ''Pseudorca yuanliensis'' and ''Pseudorca crassidens'', of which ''P. crassidens'' (commonly known as the false killer whale) is the only extant member. ''Pseudorca Crassidens'' travel in pods of 10-20 but may belong to larger schools around 100 and more ''Pseudorca yuanliensis'' is found in Pliocene layers in Yuanli, Taiwan, while ''Pseudorca yokoyamai'' is found in both Pliocene and Pleistocene rocks in Japan. References Oceanic dolphins Cetacean genera Mammal genera with one living species Taxa named by Johannes Theodor Reinhardt {{Cetacean-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudorca Yuanliensis
''Pseudorca'' is a genus of cetaceans with three members which include '' Pseudorca yokoyamai'', '' Pseudorca yuanliensis'' and ''Pseudorca crassidens ''Pseudorca'' is a genus of cetaceans with three members which include ''Pseudorca yokoyamai'', ''Pseudorca yuanliensis'' and ''Pseudorca crassidens'', of which ''P. crassidens'' (commonly known as the false killer whale) is the only extant membe ...'', of which ''P. crassidens'' (commonly known as the false killer whale) is the only extant member. ''Pseudorca Crassidens'' travel in pods of 10-20 but may belong to larger schools around 100 and more ''Pseudorca yuanliensis'' is found in Pliocene layers in Yuanli, Taiwan, while ''Pseudorca yokoyamai'' is found in both Pliocene and Pleistocene rocks in Japan. References Oceanic dolphins Cetacean genera Mammal genera with one living species Taxa named by Johannes Theodor Reinhardt {{Cetacean-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oceanic Dolphins
Oceanic dolphins or Delphinidae are a widely distributed family of dolphins that live in the sea. Close to forty extant species are recognised. They include several big species whose common names contain "whale" rather than "dolphin", such as the Globicephalinae (round-headed whales including the orca and pilot whale). Delphinidae is a family within the superfamily Delphinoidea, which also includes the porpoises (Phocoenidae) and the Monodontidae (beluga whale and narwhal). River dolphins are relatives of the Delphinoidea. Oceanic dolphins range in size from the and Maui's dolphin to the and orca, the largest known dolphin. Several species exhibit sexual dimorphism; the males are larger than females. They have streamlined bodies and two limbs that are modified into flippers. Though not quite as flexible as seals, some dolphins can travel at speeds 29 km/h (18 mph) for short distances. Most delphinids primarily eat fish, along with a smaller number of squid and smal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudorca Yokoyamai
''Pseudorca yokoyamai'' is an extinct species of oceanic dolphin from the Calabrian stage of the Pleistocene of Japan, an extinct relative of the modern day false killer whale (''P. crassidens''). Discovery and taxonomy ''Pseudorca yokoyamai'' was described in 1926 by Matsumoto Hikoshichiro of the Tohoku Imperial University. The holotype specimen is represented by two teeth–probably the very last two in the back of the mouth–and a paratype specimen consists of the right ramus of the mandible with seven teeth, though four teeth are incomplete. The holotype was found in Hommoku, Yokohama–the species name honoring the place of its discovery–and the paratype in the Kazusa Province on the opposite side of Tokyo Bay. It may represent an intermediary phase between the modern false killer whale and pilot whales (''Globicephala'' spp.). Description The teeth of ''P. yokoyamai'' are largely conical, though bend backward, with a smooth enamel coating. On the holotype, the secon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammal Genera With One Living Species
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles (including birds) from which they diverged in the Carboniferous, over 300 million years ago. Around 6,400 extant species of mammals have been described divided into 29 orders. The largest orders, in terms of number of species, are the rodents, bats, and Eulipotyphla (hedgehogs, moles, shrews, and others). The next three are the Primates (including humans, apes, monkeys, and others), the Artiodactyla (cetaceans and even-toed ungulates), and the Carnivora (cats, dogs, seals, and others). In terms of cladistics, which reflects evolutionary history, mammals are the only living members of the Synapsida (synapsids); this clade, together with Sauropsida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58See the 2014 version of the ICS geologic time scale million years ago. It is the second and most recent epoch of the Neogene Period in the . The Pliocene follows the Epoch and is followed by the Epoch. Prior to the 2009 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes Reinhardt
Johannes Theodor Reinhardt (3 December 1816, in Copenhagen – 23 October 1882, in Frederiksberg) was a Danish zoologist and herpetologist. The son of Johannes Christopher Hagemann Reinhardt. Biography He participated as botanist in the first Galathea Expedition (1845—1847). In 1848 he became a curator at the ''Kongelige Naturhistoriske Museum'' in Copenhagen (now University of Copenhagen Zoological Museum). He taught classes in zoology at the ''Danmarks Tekniske Universitet'' (1856–1878) and at the University of Copenhagen (1861–1878). In 1854 he received the title of professor.Darwinarkivet Biographies; Johannes Theodor Reinhardt. During the 1840s and 1850s he periodically worked in |
Cetacea
Cetacea (; , ) is an infraorder of aquatic mammals that includes whales, dolphins, and porpoises. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively carnivorous diet. They propel themselves through the water with powerful up-and-down movement of their tail which ends in a paddle-like fluke, using their flipper-shaped forelimbs to maneuver. While the majority of cetaceans live in marine environments, a small number exclusively reside in brackish water or fresh water. Having a cosmopolitan distribution, they can be found in some rivers and all of Earth's oceans, and many species inhabit vast ranges where they migrate with the changing of the seasons. Cetaceans are famous for their high intelligence and complex social behaviour as well as for the enormous size of some of the group's members, such as the blue whale which reaches a maximum confirmed length of 29.9 meters (98 feet) and a weight of 173 tonnes (190 short to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cetacean Genera
Cetacea (; , ) is an infraorder of aquatic mammals that includes whales, dolphins, and porpoises. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively carnivorous diet. They propel themselves through the water with powerful up-and-down movement of their tail which ends in a paddle-like fluke, using their flipper-shaped forelimbs to maneuver. While the majority of cetaceans live in marine environments, a small number exclusively reside in brackish water or fresh water. Having a cosmopolitan distribution, they can be found in some rivers and all of Earth's oceans, and many species inhabit vast ranges where they migrate with the changing of the seasons. Cetaceans are famous for their high intelligence and complex social behaviour as well as for the enormous size of some of the group's members, such as the blue whale which reaches a maximum confirmed length of 29.9 meters (98 feet) and a weight of 173 tonnes (190 short tons) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Cetacean Genera")