| 单词 | pygmy mouse |
| 例句 | My dad was like a thirteen-thousand-pound elephant freaking out over an itty-bitty African pygmy mouse. Sir Fig Newton and the Science of Persistence 2022-03-22T00:00:00Z Modern rodents range in size from pygmy mice weighing less than an ounce to stocky capybaras pushing 175 pounds. Earth’s Largest Rodents Were Smaller Than We Once Thought 2022-06-14T04:00:00Z This unprepossessing early primate was even smaller than today’s smallest primate, the pygmy mouse lemur of Madagascar. Palm-Size Fossil Resets Primates’ Clock, Scientists Say 2013-06-05T18:53:47Z Study of larger series of specimens than were available to Burt reveals that populations of pygmy mice inhabiting the northwest coastal plains of M�xico are indeed distinct. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z A new pygmy mouse of the genus Baiomys from Oaxaca, Mexico. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The principal part of the geographic range of the pygmy mice lies in the Republic of M�xico. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The largest single collection of pygmy mice is in the University of Kansas Museum of Natural History, and, unless otherwise indicated, specimens cited in the taxonomic accounts beyond are there. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Mr. B. J. Wilks of the University of Texas, Department of Zoology, provided a number of living pygmy mice for study in captivity. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The geographic range of ancestral pygmy mice possibly extended farther south in late Pliocene time than the range of B. musculus does now. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Mr. J. Raymond Alcorn and his son, Albert, collected a large share of specimens of pygmy mice now in the University of Kansas, Museum of Natural History. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Diagram indicating probable relationships of living and extinct species of pygmy mice. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Perhaps, the living southern pygmy mouse retains many basic characteristics of one of the early North American cricetine-like stocks that emigrated to South America near the end of the Pliocene epoch. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Juvenal and young pygmy mice are readily separable from the other three categories; subadults are less easily distinguished from adults. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Therefore, populations of pygmy mice occurring to the south in central M�xico might be expected to maintain a relatively high degree of heterozygosity in morphological and behavioral characters. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Irregularities in number of teeth and abnormalities in individual teeth seem to be rare in pygmy mice. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The postjuvenal pelage was seemingly complete in one captive pygmy mouse at the end of 60 days. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z In pygmy mice, however, the dental patterns are relatively constant. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Southern pygmy mice at high altitudes average larger than those from low elevations, except where the two species are sympatric. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z There is evidence that a barrier occurred in the Pleistocene in central M�xico sufficient to separate the supposed interbreeding, relatively homogeneous populations of pygmy mice. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The southern pygmy mouse seems to be locally abundant in certain parts of its geographic range, and in other parts, scarce. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z N Presidio, 1500 feet, Veracruz, where he caught only two pygmy mice in several days of trapping. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Food of the southern pygmy mouse includes nuts, bark, grass seeds, and leaves. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Reproduction.—Notations concerning lactation and embryos on specimen labels of females suggest that the southern pygmy mouse breeds in all months. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Presumably, the advance of ice down the mountains forced the pygmy mice to move to lower altitudes. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The mesic conditions to the north in Tabasco and Yucat�n probably have restricted the movement of pygmy mice to the north. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Populations of pygmy mice occurring in partially isolated areas of highland in Oaxaca seem to me to be incipient subspecies. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The northern pygmy mouse, in general, lives in situations more xerophytic and more grassy than does the southern pygmy mouse. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The northern pygmy mouse, as the southern pygmy mouse, is locally abundant in its geographic range. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z In the area where the two species of pygmy mice occur together, there seems to be a disparity in numbers between them. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Behavior.—The northern pygmy mouse is crepuscular to nocturnal and where I trapped in northern Mexico was one of the first small rodents to appear in my traps in the evening. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The northern pygmy mouse makes runways in the grass, in miniature resembling those of Microtus, and often uses runways constructed by Sigmodon. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Enemies and food.—Little is recorded of the animals that prey upon the northern pygmy mouse. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Reproduction.—The northern pygmy mouse breeds throughout the year. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Shifts of geographical range of populations of pygmy mice at and near the periphery of their geographic range may account for the differentiation of the extinct species. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The small number of known species of pygmy mice suggests their conservatism in elaboration of morphological characters. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z If the habitat of the pygmy mice oscillated between savannah and arid grassland, then an hypothesis can be made possibly accounting for the origin of species of these mice. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The combination of morphological and behavioral characters in the living pygmy mice warrants generic status for them. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Extra teeth in the pygmy mouse, Baiomys musculus. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z |
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