Geographic variation in red-backed mice (Genus Clethrionomys) of the southern Rocky Mountain region.
The few specimens from a limited geographic region preclude any analysis of geographic variation.
No geographic variation in structural characters is discernible; variation in size and proportions is given in Table 1.
Geographic variation in the pocket gopher, Cratogeomys castanops, in Coahuila, Mexico.
Geographic variation in the harvest mouse, Reithrodontomys megalotis, on the central Great Plains and in adjacent regions.
In the size at which sexual maturity is attained there seems to be much individual variation as well as geographic variation.
As an indication of geographic variation in spinifer, I have listed the measurements of the 10 smallest males for only those subspecies of which there are numerous records (Table 7).
The tubercles on the anterior edge of the carapace in adults of both sexes vary from round to equilateral and conical to low and flattened (see comments on tuberculation under subsection entitled "Geographic Variation").
Tamaulipan specimens, realizing that the patterns of geographic variation in the species do not lend themselves well to taxonomic treatment by the trinomial nomenclatural system.
First records from Texas of Hybopsis gracilis and Notropis girardi, with comments on geographic variation of the latter.
The purpose of this paper is to redescribe the species and to make known its pattern of geographic variation.
The acquisition and study of additional material from throughout the range of the species is necessary to clarify the picture of geographic variation.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "geographic variation" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
