Climatic significance of Late Pleistocene insect fossils from Marias Pass, Montana
- 31 May 1988
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Earth Sciences
- Vol. 25 (6) , 922-926
- https://doi.org/10.1139/e88-089
Abstract
A small insect fossil assemblage was recovered from Late Pleistocene lake sediment below the Mount St. Helens Jy ash near Marias Pass, Montana. The insect fauna contains several arctic, alpine, and open-ground beetles, including Bembidion sulcipenne hyperboroides and possibly Holoboreaphilus nordenskioeldi. This fauna, in conjunction with the plant macrofossil evidence, suggests that at about 11,400 BP tree line was at least 450 m lower than present.This publication has 1 reference indexed in Scilit:
- Palynology of Pinedale Sediments, Devlins Park, Boulder County, ColoradoArctic and Alpine Research, 1980