From Ohio History Central
Geinitzia sp.; Age: Upper Cretaceous Location: Neslin Formation, Thompson Springs, Utah
Conifers are gynosperms that bear seeds in cones (“pine cones”) and have leaves that are short and needle-like. Everyone is familiar with a variety of species living today. Conifers first appeared in the Late Pennsylvanian, although their fossils are rare. Specimens of branches with attached needles have been found in Ohio. Most of these remains are placed in the genus Walchia.
- Cross, A. T., Gillespie, W. H., and Taggart, R. E., 1996. "Upper Paleozoic Vascular Plants," in Fossils of Ohio, edited by R. M. Feldmann and Merrianne Hackathorn. Ohio Division of Geological Survey Bulletin 70, p. 396-479.