Notably, the divergence between the northern clades seems to have occurred far too early for the Pleistocene ice ages to have played a major part.
22.
The current restricted range of the family may be due to either the severe cooling at the Eocene Oligocene transition or the Pliocene Pleistocene ice age.
23.
In Britain the ice sheet reached the Isles of Scilly and the Western Approaches, the furthest south the ice reached in any Pleistocene ice age ..
24.
Rising above these lowlands is a geographical region comprising the four hilly districts of moraines and moraine-dammed lakes formed during and after the Pleistocene ice age.
25.
I've been reading articles lately that suggest that supernova debris, as evidenced by iron-60, might have set off the Pleistocene ice age.
26.
In common with the rest of Scotland the Firth of Clyde was covered by ice sheets during the Pleistocene ice ages and the landscape is much affected by glaciation.
27.
Much of the water in this aquifer has been there for many thousands of years, since the Pleistocene ice ages, when the climate was cooler and wetter.
28.
The National Preserve protects a remnant of the Bering Land Bridge that connected Asia with North America more than 13, 000 years ago during the Pleistocene ice age.
29.
The Seward Peninsula is a remnant of the Bering land bridge, a roughly thousand mile wide swath of land connecting Siberia with mainland Alaska during the Pleistocene Ice Age.
30.
When sea levels fell during the Pleistocene ice age, including the last glacial maximum about 18, 000 years ago, the Sahul Shelf was exposed as dry land.
