hymenobacter psychrotolerans hymenobacter psychrotolerans hymenobacter psychrotolerans is a bacterium from the genus of hymenobacter which has been isolated from permafrost sediments from the qinghai-tibet plateau in china. hymenobacter psychrotolerans scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: hymenobacteraceae genus: hymenobacter species: h. psychrotolerans binomial name hymenobacter psychrotoleranszhang et al. 2008 type strain cgmcc 1.6365, dsm 18569, tibet-iiu11