Taxa Count: 58
SPIRILLINIDAE
Conicospirillina
Conicospirillina atlantica
Conicospirillina coronata
Conicospirillina exleyi
Conicospirillina planorbis
Conicospirillina semi-involuta
Conicospirillina semiinvoluta
Conicospirillina trochoidea
Conicospirillina trochoides
Mychostomina peripora
Mychostomina revertens
Sejunctella earlandi
Sejunctella spinigera
Spirillina
Spirillina amphelicta
Spirillina arctica
Spirillina bendensis
Spirillina conoidea
Spirillina decorata
Spirillina denticulo-granulata
Spirillina denticultata
Spirillina grosseperforata
Spirillina gurgitata
Spirillina guttata
Spirillina inaequalis
Spirillina lateseptata
Spirillina limbata
Spirillina limbata tuberculo-limbata
Spirillina limbata var. bipunctata
Spirillina limbata var. denticulata
Spirillina limbata var. papillosa
Spirillina minima
Spirillina obconica
Spirillina operculoides
Spirillina orbicularis
Spirillina ornata
Spirillina perforata
Spirillina plana
Spirillina revertens
Spirillina selseyensis
Spirillina sp a
Spirillina spinigera
Spirillina spinigera var. reducta
Spirillina subdecorata
Spirillina toddae
Spirillina tuberculato-limbata
Spirillina vicksburgensis
Spirillina viripara
Spirillina vivipara
Spirillina vivipara densepunctata
Spirillina vivipara revertens
Spirillina vivipara var. densepunctata
Spirillina wrightii
Turrispirillina arctica
Turrispirillina conoidea
Turrispirillina depressa
Turrispirillina spirella
Turrispirillina subconica