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单词 monotypic
例句 monotypic
Until more material from critical areas is available for study, I continue to recognize angustapalata as a monotypic species. The Recent Mammals of Tamaulipas, Mexico 2012-04-06T02:00:23.953Z
The tribe is very poorly represented in tropical Africa; one species Oxytenanthera abyssinica has a wide range, and three monotypic genera are endemic in western tropical Africa. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z
For I take them to indicate a continued failure to perceive the all-important distinction between evolution as monotypic and polytypic. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z
Three are monotypic and the fourth has three subspecies, making a total of six taxa. A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America) 2011-09-25T02:00:14.967Z
Geographical Distribution.—The genus is monotypic and is only known from Travancore and Cochin in the south-west of the Indian Peninsula. Freshwater Sponges, Hydroids & Polyzoa 2011-06-25T02:00:17.833Z
The genus Braemia is monotypic, which means that only one species is known to exist. Scientist at Work: Q. and A. on Peru's Northern Amazon 2011-03-04T17:27:48Z
The museum catalogue numbers of the specimens examined, together with the localities from which they came, are listed at the end of the account of each subspecies or monotypic species. A Review of the Middle American Tree Frogs of the Genus Ptychohyla 2011-02-28T03:00:32.093Z
In the case of monotypic evolution by natural selection alone, intercrossing with the parent type is prevented through the gradual extinction of that type by successive generations of the developing type. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z
The only endemic for which the geographic history cannot be adequately explained is the monotypic Pityriasis gymnocephala. Birds from North Borneo University of Kansas Publications, Museum of Natural History, Volume 17, No. 8, pp. 377-433, October 27, 1966
This relatively poorly known monotypic species occurs from southern Veracruz to the Amazon Basin. Noteworthy Records of Bats From Nicaragua, with a Checklist of the Chiropteran Fauna of the Country
This relationship suggests that the two kinds are neither subspecies of a single species, nor individual variants of a widespread, monotypic species, but probably are two different species. Noteworthy Mammals from Sinaloa, Mexico
Other references to the monotypic genus have consisted only of a listing of the name or of its inclusion in a key. Systematic Status of a South American Frog, Allophryne ruthveni Gaige
Similarly, and still more recently, Professor Le Conte writes:— It is evident, then, as Romanes claims, that natural selection alone tends to monotypic evolution. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z
These 443 species are distributed among 47 genera, of which 15 are represented by but a single species each,—monotypic. The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species
IKE Leuchtenbergia, this genus is monotypic, and it is also rare, difficult to cultivate, and exceptionally interesting in structure. Cactus Culture for Amateurs Being Descriptions of the Various Cactuses Grown in This Country, With Full and Practical Instructions for Their Successful Cultivation
P.S.—I have just thought that your remark about the much variation of monotypic genera was to show me that even in these, the smallest genera, there was much variability. More Letters of Charles Darwin — Volume 1
Or, in other words, natural selection, when acting alone, can never induce polytypic evolution, but only monotypic. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z
Again, natural selection differs from most of the other forms of isolation in that, unless assisted by some other form, it can never lead to polytypic, but only to monotypic evolution. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z
First, the distinction between monotypic and polytypic evolution is not defined. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z
Here we have what may perhaps be regarded as a glimmering of the distinction between monotypic and polytypic evolution. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z
One of your remarks I do not see the bearing of under your point of view—namely, that in monotypic genera "the variation and variability" are "much more frequently noticed" than in polytypic genera. More Letters of Charles Darwin — Volume 1
But that it is only a glimmering is proved by the immediately ensuing sentences, which apply this analogy of unconscious selection not to the case of monotypic, but to that of polytypic evolution. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z
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