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 ecognized 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