Anodontopsis amygdalaeformis Walcott, 1884 † (original description)
Bellerophon combsi Walcott, 1884 † (original description)
Bellerophon perplexa Walcott, 1884 † (original description)
Conocardium nevadensis Walcott, 1884 † (original description)
Dystactella insularis Walcott, 1884 † (original description)
Ecculiomphalus devonicus Walcott, 1884 † (original description)
Euomphalus eurekensis Walcott, 1884 † (original description)
Grammysia minor Walcott, 1884 † accepted as Grammysioidea minor (Walcott, 1884) † (original description)
Leptodesma transversa Walcott, 1884 † (original description)
Limoptera sarmenticia Walcott, 1884 † (original description)
Megambonia occidualis Walcott, 1884 † (original description)
Modiomorpha altiforme Walcott, 1884 † (original description)
Modiomorpha oblonga Walcott, 1884 † (original description)
Modiomorpha obtusa Walcott, 1884 † (original description)
Mytilarca dubia Walcott, 1884 † (original description)
Nyassa parva Walcott, 1884 † (original description)
Pinna inexpectans Walcott, 1884 † accepted as Sulcatopinna inexpectans (Walcott, 1884) † (original description)
Platyceras conradi Walcott, 1884 † (original description)
Platyceras thetiforme Walcott, 1884 † (original description)
Platyceras undulatum Walcott, 1884 † (original description)
Platyschisma mccoyi Walcott, 1884 † accepted as Orecopia mccoyi (Walcott, 1884) † (original description)
Pterinea newarkensis Walcott, 1884 † (original description)
Sanguinolites combensis Walcott, 1884 † (original description)
Sanguinolites gracilis Walcott, 1884 † (original description)
Schizambon Walcott, 1884 † (original description)
Schizambon typicalis Walcott, 1884 † (original description)
Schizodus curtiformis Walcott, 1884 † (original description)
Schizodus deparcus Walcott, 1884 † (original description)
Schizodus pintoensis Walcott, 1884 † (original description)
Straparollus newarkensis Walcott, 1884 † (original description)