Microhypsibiidae

Microhypsibiidae is a family of water bear or moss piglet, a tardigrade in the class Eutardigrada. It contains the following species in two genera
 * Fractonotus
 * Fractonotus caelatus (Marcus 1928)
 * Microhypsibius
 * Microhypsibius bertolanii Kristensen, 1982
 * Microhypsibius japonicus Ito, 1991
 * Microhypsibius minimus Kristensen, 1982
 * Microhypsibius truncatus Thulin, 1928