Examples of spore-bearing plants are mosses, true ferns, horsetail rushes, and club mosses. Seed-bearing plants are most abundant in Kentucky today.
Examples are grasses, tobacco, oaks, maples, and poison ivy.
Fossils of both groups are abundant in parts of Kentucky. Plant fossils have been found in black shales of Devonian age in the Knobs Region, in shales and sandstones of the Eastern and Western Kentucky Coal Fields, and in clay, shale, and sands of the Cretaceous and Tertiary sediments of the Jackson Purchase Region. Some Kentucky plant fossils , at the Kentucky Paleontological Society webpage For more information, contact Don Chesnut . Seed ferns are described later. D.C. Rarely, foliage from these and other plants is found in these Devonian shales.