Marville Tenn. Reservoir Hill and hill just N. & Here Orthorhynchula linneyi and large Leperditrias, a little to the N. are justly less than 20' Down are other quarries with an abundance of Tetradium and Cleunnaria. Naepli's Hill for an extensive section in Orthorhynchula and Tetradium horizon. The section is as follows: Upper Byogon beds or Rafinesquina zone. Then 20' down Orthorhynchula horizon. Then 12' down Tetradium zone. Then 15' down Soft chaly limestone. Then 8' to road. at South end. These are the Capitol Hill limestone beds of Jefford, the transition beds between the Trenton and the Cincinnati beds.