A new flora consisting of both compression-impressions and petrifications occurs in the shales and sandstones of the Lower Permian Cedar Mesa Sandstone near Canyonlands National Park, approximately 48 km (30 miles) northwest of Monticello in southeastern Utah. A preliminary analysis has identified among the compression-impressions species of Calamites, Sphenopteris, and a fertile pecopterid, that may be a new taxon. Two species of Dadoxylon and one of Cordiaxylon, based on its pith, have been noted among the petrified remains, although other types of stems are likely present as well. Many of the petrifactions are relatively large, including logs that appear to have been washed together into a fairly large logjam. The most abundant members of the flora are numerous pecopterid leaves, often with intact fronds, and petrified logs. This flora constitutes one of the few known floras of this age in the American Southwest.

Key words: Canyonlands NP, Cedar Mesa Sandstone, pecopteris, Permian, petrifactions, Southeastern Utah