| 单词 | eutherian |
| 释义 | eutherian (once / 11819311 pages) nadj WORD FAMILY eutherian USAGE EXAMPLES"This little critter, Sasayamamylos, is the oldest Eutherian mammal to demonstrate what paleontologists consider the modern dental formula in placental mammals," Davis told LiveScience. Scientific American(Mar 27, 2013) Here we report the sequencing and comparative analysis of 29 eutherian genomes. Nature(Oct 26, 2011) As the earliest eutherian known to date, the creature represents what some of our own precursors were like during the Jurassic. Science Magazine(Aug 24, 2011) 1n mammals having a placenta; all mammals except monotremes and marsupials Syn|Exp|Hypo|Hyper eutherian mammal, placental, placental mammal Lucy incomplete skeleton of female found in eastern Ethiopia in 1974 Sir Bartonthoroughbred that won the triple crown in 1919 Gallant Foxthoroughbred that won the triple crown in 1930 Omahathoroughbred that won the triple crown in 1935 War Admiralthoroughbred that won the triple crown in 1937 Whirlawaythoroughbred that won the triple crown in 1941 Count Fleetthoroughbred that won the triple crown in 1943 Assaultthoroughbred that won the triple crown in 1946 Citationthoroughbred that won the triple crown in 1948 Secretariatthoroughbred that won the triple crown in 1973 Seattle Slewthoroughbred that won the triple crown in 1977 Affirmedthoroughbred that won the triple crown in 1978 farm animal, livestock, stock any animals kept for use or profit bullmature male of various mammals of which the female is called `cow'; e.g. whales or elephants or especially cattle cowmature female of mammals of which the male is called `bull' yearlingan animal in its second year buckmature male of various mammals (especially deer or antelope) doemature female of mammals of which the male is called `buck' insectivoresmall insect-eating mainly nocturnal terrestrial or fossorial mammals aquatic mammalwhales and dolphins; manatees and dugongs; walruses; seals carnivorea terrestrial or aquatic flesh-eating mammal Fissipediain some classifications considered a suborder of Carnivora Orycteropus afer, aardvark, ant bear, anteaternocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata bat, chiropterannocturnal mouselike mammal with forelimbs modified to form membranous wings and anatomical adaptations for echolocation by which they navigate gnawing mammal, lagomorphrelative large gnawing animals; distinguished from rodents by having two pairs of upper incisors specialized for gnawing gnawer, rodentrelatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing Ungulatain former classifications a major division of Mammalia comprising all hoofed mammals; now divided into the orders Perissodactyla (odd-toed ungulates) and Artiodactyla (even-toed ungulates) hoofed mammal, ungulateany of a number of mammals with hooves that are superficially similar but not necessarily closely related taxonomically Unguiculatain former classifications a major division of Mammalia comprising mammals with nails or claws; distinguished from hoofed mammals and cetaceans unguiculate, unguiculate mammala mammal having nails or claws coney, cony, das, dassie, hyraxany of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes pachydermany of various nonruminant hoofed mammals having very thick skin: elephant; rhinoceros; hippopotamus edentateprimitive terrestrial mammal with few if any teeth; of tropical Central America and South America anteater, pangolin, scaly anteatertoothless mammal of southern Africa and Asia having a body covered with horny scales and a long snout for feeding on ants and termites primateany placental mammal of the order Primates; has good eyesight and flexible hands and feet tree shrewinsectivorous arboreal mammal of southeast Asia that resembles a squirrel with large eyes and long sharp snout colugo, flying cat, flying lemurarboreal nocturnal mammal of southeast Asia and the Philippines resembling a lemur and having a fold of skin on each side from neck to tail that is used for long gliding leaps proboscidean, proboscidianmassive herbivorous mammals having tusks and a long trunk plantigrade, plantigrade mammalan animal that walks with the entire sole of the foot touching the ground as e.g. bears and human beings digitigrade, digitigrade mammalan animal that walks so that only the toes touch the ground as e.g. dogs and cats and horses molesmall velvety-furred burrowing mammal having small eyes and fossorial forefeet shrew, shrewmousesmall mouselike mammal with a long snout; related to moles Erinaceus europaeus, Erinaceus europeaeus, hedgehogsmall nocturnal Old World mammal covered with both hair and protective spines tendrac, tenrecsmall often spiny insectivorous mammal of Madagascar; resembles a hedgehog Potamogale velox, otter shrew, potamogaleamphibious African insectivorous mammal that resembles an otter blower, cetacean, cetacean mammallarge aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales; dolphins; porpoises; narwhals sea cow, sirenian, sirenian mammalany of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs pinnatiped, pinniped, pinniped mammalaquatic carnivorous mammal having a streamlined body specialized for swimming with limbs modified as flippers fissiped, fissiped mammalterrestrial carnivores; having toes separated to the base: dogs; cats; bears; badgers; raccoons canid, canineany of various fissiped mammals with nonretractile claws and typically long muzzles felid, felineany of various lithe-bodied roundheaded fissiped mammals, many with retractile claws bearmassive plantigrade carnivorous or omnivorous mammals with long shaggy coats and strong claws viverrine, viverrine mammalsmall cat-like predatory mammals of warmer parts of the Old World fruit bat, megabatlarge Old World bat of warm and tropical regions that feeds on fruit carnivorous bat, microbattypically having large ears and feeding primarily on insects; worldwide in distribution Duplicidentatain former classifications considered a suborder of Rodentia coextensive with the order Lagomorpha: gnawing animals leporid, leporid mammalrabbits and hares coney, cony, mouse hare, pika, rock rabbitsmall short-eared burrowing mammal of rocky uplands of Asia and western North America mouseany of numerous small rodents typically resembling diminutive rats having pointed snouts and small ears on elongated bodies with slender usually hairless tails ratany of various long-tailed rodents similar to but larger than a mouse murinea rodent that is a member of the family Muridae water ratany of various amphibious rats New World mousea variety of rodent Ondatra zibethica, muskrat, musquashbeaver-like aquatic rodent of North America with dark glossy brown fur Florida water rat, Neofiber alleni, round-tailed muskratof Florida wetlands Sigmodon hispidus, cotton ratdestructive long-haired burrowing rat of southern North America and Central America wood rat, wood-ratany of various small short-tailed rodents of the northern hemisphere having soft fur grey above and white below with furred tails and large ears; some are hosts for Ixodes pacificus and Ixodes scapularis (Lyme disease ticks) hamstershort-tailed Old World burrowing rodent with large cheek pouches gerbil, gerbillesmall Old World burrowing desert rodent with long soft pale fur and hind legs adapted for leaping lemmingany of various short-tailed furry-footed rodents of circumpolar distribution hedgehog, porcupinerelatively large rodents with sharp erectile bristles mingled with the fur jumping mouseany of several primitive mouselike rodents with long hind legs and no cheek pouches; of woodlands of Eurasia and North America jerboamouselike jumping rodent dormousesmall furry-tailed squirrel-like Old World rodent that becomes torpid in cold weather squirrela kind of arboreal rodent having a long bushy tail prairie dog, prairie marmotany of several rodents of North American prairies living in large complex burrows having a barking cry marmotstocky coarse-furred burrowing rodent with a short bushy tail found throughout the northern hemisphere; hibernates in winter beaverlarge semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodges Aplodontia rufa, mountain beaver, sewellelbulky nocturnal burrowing rodent of uplands of the Pacific coast of North America; the most primitive living rodent cavyshort-tailed rough-haired South American rodent Dolichotis patagonum, marahare-like rodent of the pampas of Argentina Hydrochoerus hydrochaeris, capibara, capybarapig-sized tailless South American amphibious rodent with partly webbed feet; largest living rodent Dasyprocta aguti, agoutiagile long-legged rabbit-sized rodent of Central America and South America and the West Indies; valued as food Cuniculus paca, pacalarge burrowing rodent of South America and Central America; highly esteemed as food mountain pacarodent of mountains of western South America Myocastor coypus, coypu, nutriaaquatic South American rodent resembling a small beaver; bred for its fur Chinchilla laniger, chinchillasmall rodent with soft pearly grey fur; native to the Andes but bred in captivity for fur mountain chinchilla, mountain viscachaa rodent native to the mountains of Chile and Peru and now bred in captivity Lagostomus maximus, chinchillon, viscachagregarious burrowing rodent larger than the chinchillas abrocome, chinchilla rat, rat chinchillaratlike rodent with soft fur and large ears of the Andes mole ratfurry short-limbed tailless rodent resembling a true mole in habits and appearance; of eastern Europe and Middle East mole ratAfrican rodent resembling a mole in habits and appearance sand ratsmall nearly naked African mole rat of desert areas dinoceratean extinct ungulate Procavia capensis, rock hyrax, rock rabbithyrax that lives in rocky areas odd-toed ungulate, perissodactyl, perissodactyl mammalplacental mammals having hooves with an odd number of toes on each foot artiodactyl, artiodactyl mammal, even-toed ungulateplacental mammal having hooves with an even number of functional toes on each foot stagadult male deer mustelid, musteline, musteline mammalfissiped fur-bearing carnivorous mammals armadilloburrowing chiefly nocturnal mammal with body covered with strong horny plates sloth, tree slothany of several slow-moving arboreal mammals of South America and Central America; they hang from branches back downward and feed on leaves and fruits megatherian, megatherian mammal, megatheriida large extinct ground sloth mylodontida variety of extinct edentate mylodonlarge (bear-sized) extinct edentate mammal of the Pleistocene in South America New World anteater, anteaterany of several tropical American mammals of the family Myrmecophagidae which lack teeth and feed on ants and termites simianan ape or monkey apeany of various primates with short tails or no tail at all anthropoidany member of the suborder Anthropoidea including monkeys and apes and hominids hominoida primate of the superfamily Hominoidea hominida primate of the family Hominidae monkeyany of various long-tailed primates (excluding the prosimians) pen-tail, pen-tailed tree shrew, pentailbrown tree shrew having a naked tail bilaterally fringed with long stiff hairs on the distal third; of Malaysia prosimianprimitive primates having large ears and eyes and characterized by nocturnal habits lemurlarge-eyed arboreal prosimian having foxy faces and long furry tails tarsiernocturnal arboreal primate of Indonesia and the Philippines having huge eyes and digits ending in pads to facilitate climbing; the only primate that spurns all plant material as food living entirely on insects and small vertebrates Cynocephalus variegatusa variety of flying lemur elephantfive-toed pachyderm mastodon, mastodontextinct elephant-like mammal that flourished worldwide from Miocene through Pleistocene times; differ from mammoths in the form of the molar teeth procyonidplantigrade carnivorous mammals mammal, mammalian any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk 2adj of or relating to or belonging to the subclass Eutheria eutherian mammals |
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