Oligocene woods from the Cypress Hills Formation in Saskatchewan, Canada

Abstract

This is a report of investigations of the petrified woods from the Cypress Hills Formation (Oligocene) of Saskatchewan. Families represented are Pinaceae (Pinoxylon hanlinei sp. nov.), Taxodiaceae (Sequoioxylon gypsaceum (Gothan) Greguss), Magnoliaceae (Magnolioxylon michelioides Hofmann), Simaroubaceae (Ailanthoxylon canalosum sp. nov.), Hamamelidaceae (Liquidambaroxylon speciosum Felix), and Juglandaceae (Eucaryoxylon canadensis sp. nov.). It is interesting to note here that except for the Pinaceae none of these families is now a part of the flora of this region. Presently genera of the other families occur in the eastern and southwestern United States, in the southeastern part of Canada (Carya), or in eastern Asia.