- †Archinacella
simulatrix †Arnoldella †Arnoldella
minuta †Arthraria †Arthraria
rogersensis †Arthropitys †Arthropitys
communis †Arthroxylon †Asol**** †Aspidopora...
- †Sphaerocyclus
tuber †Sphenosphaera †Sphenosphaera
capax †Sphenosphaera
rogersensis †Sphenosphaera
troosti †Spirifer †Spirifer
shephardi – or unidentified...
- †Sphenolium †Sphenosphaera †Sphenosphaera
platystoma †Sphenosphaera
rogersensis †Spyroceras †Spyroceras
cylindratum †Spyroceras
lesueuri †Spyroceras...
