Leonardian A series in the Lower Permian of N. America, underlain by the Wolfcampian, overlain by the Guadalupian, and roughly contemporaneous with the Artinskian and Kungurian Stages. In some areas it is zoned by the use of fusilined foraminiferids. It is the N. American equivalent of the Rotliegende. Redbed localities of Wolfcampian—Leonardian age in Texas and Colorado have yielded many vertebrate fossils.

Leonardian The second of the four stages of the Permian in N. America. In some areas it is zoned by the use of fusulinid Foraminiferida. It is the N. American equivalent of the Rotliegende. Red-bed localities of Wolfcampian–Leonardian age in Texas and Colorado have yielded many vertebrate fossils.

Leonardian The second of the four stages of the Permian in N. America. In some areas it is zoned by the use of fusulinid foraminiferids. It is the N. American equivalent of the Rotliegende.