Bellerophon marcouianus Geinitz.
Bellerophon cf. montfortianus Norwood and Pratten.
Bellerophon percarinatus Conrad.
Bulimorpha nitidula (Meek and Worthen) Keyes.
Capulus sp.
Soleniscus paludinæformis (Hall) White.
Sphærodoma texana (Shumard) Keyes.
Orthoceras sp.
Tainoceras occidentalis (Swallow) Hyatt?
30. Willard Shales. These shales are fifty-five feet thick in their thinnest exposure, and are thicker in some places. Bennett gives their thickness at Willard at from seventy-five to eighty-five feet, including a thin stratum of limestone.[[10]] The Bennett collection contains the following specimens taken from this thin limestone: