Ramazzottius varieornatus (see image) is a terrestrial invertebrate that is extroardinarily tolerant of extreme conditions such as irradiation, chemicals, dehydration and high pressure.[2] This tolerance is linked to the presence of the damage suppressor protein (Dsup) that binds to nucleosomes providing tolerance to DNA damage, such as that caused by ionizing radiation or hydroxyl radicals.[2][3]
Biserov, V.I. (1998). "Tardigrades of the Caucasus with a taxonomic analysis of the genus Ramazzottius (Parachela: Hypsibiidae)". Zoologischer Anzeiger. 236: 139–159.
Biserov, V.I.; Tumanov, D.V. (1993). "Ramazzottius valaamis sp. n.(Tardigrada, Hypsibiidae), a new species of Tardigrads from Valaam Island, Karelia, Russia". Zoologičeskij žurnal. 72 (11): 35–39.
Doyére, L.M. (1840). "Memoire sur les Tardigrades. I". Annales des Sciences Naturelles, Paris. Série 2. 14: 269–362.