Thanks to the Faunmap project (Graham and Lundelius, 2010), it
is nowpossible to compare the results of regional Quaternary insect
studies with studies of contemporaneous vertebrate faunas. There
are hundreds of Quaternary vertebrate faunal localities known
from the Rocky Mountain region, of which ten have produced
notably diverse faunal lists from the Late Pleistocene and Holocene
(Table 1). Each of these sites has produced Late Pleistocene faunas
of at least ten to fifteen identified species. A few, such as Bell Cave
and Natural trap Cave in Wyoming and the Ziegler Reservoir site in
Colorado have yielded vertebrate faunal lists including more than
20 species (see Table 3 for site references). The patterns of regional
extirpation of the mammal species from the Rockies during and
after the Lastglaciation are compared here to the patterns observed
in the beetle faunas..