- 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