The Eocene Thunder Mountain Flora of Central Idaho: Volume 142

ISBN-13: 9780520098237 / Angielski / Miękka / 1998 / 72 str.

Daniel Axelrod

Opis

An Eocene (45 Ma) flora from Thunder Mountain caldera shows that montane conifer forest species from upper slopes descended to interfinger with mixed conifer-deciduous hardwood forest on the caldera floor then near 1700 m. Most species are allied to those in the western United States, but a few genera are in China. Precipitation was near 100 cm yearly, with most in summer.