Extinction of Mastodons in Eastern North America : Testing a New Climatic- Environmental Hypothesis
Dreimanis, A. (1968-11)
More than 600 late Wisconsin mastodon occurrences are known from the glaciated and periglacial portions of eastern North America. Most of of them have been found in poorly drained lowlands, swamps, and valleys, and on the ...
Red-Winged Blackbird Nestling Growth Compared to Adult Size and Differential Development of Structures
Holcomb, Larry C.; Twiest, Gilbert (1968-11)
Red-winged Blackbirds (Agelaius phoeniceus) were studied at Toledo, Ohio, in an upland habitat in 1964 and 1965, and at Battle Creek, Michigan, in a marsh habitat in 1965. Nestlings were weighed and measured each day. In ...
Index to Volume 68