Oxyloma haydeni
Introduction '''''Oxyloma haydeni''''' is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Succineidae, the amber snails. A subspecies of this species is protected after having been  recognized as Endangered.
Subspecies * ''Oxyloma haydeni haydeni'' (W. G. Binney, 1858) - Niobrara ambersnail* ''Oxyloma haydeni kanabensis'' (Pilsbry, 1948) - Kanab ambersnail an endangered subspecies
References *  US Fish & Wildlife Service info on the second subspecies