TABLE 4. Chronological sequence of 5- and 6-triangle m1 morphotypes (5T, 6T) in Microtus pennsylvanicus from Kansas. Data for samples other than Golliher B from
Davis (1987). N= number of specimens, % = percent.
Sample
N
%5T
%6T
Modern
(KS, NE, COL. NM)
116
30.1
65.5
Robert
(11,000+ 390)
58
36.3
62.0
Golliher B
(12,510+ 80)
60
67.0
33.0
Jones (Ambystoma faunule)
(26,700+ 1300,
29,000+ 1300)