- eBookThe Adductor Muscles of the Jaw In Some Primitive ReptilesRichard C. Fox
- eBookTwo New Pelycosaurs from the Lower Permian of OklahomaRichard C. Fox
- eBookThe Adductor Muscles of the Jaw In Some Primitive ReptilesRichard C. Fox
- eBookThe Adductor Muscles of the Jaw In Some Primitive ReptilesRichard C. Fox
- eBookTwo New Pelycosaurs from the Lower Permian of OklahomaRichard C. Fox
- eBookTwo New Pelycosaurs from the Lower Permian of OklahomaRichard C. Fox