Berman D, Meshcheryakova E, Bulakhova N. Extreme negative temperatures and body mass loss in the Siberian salamander (Salamandrella keyserlingii, amphibia, hynobiidae). Dokl Biol Sci. 2016;468:137-41 pubmed publisher
Frozen Siberian salamander safely tolerates long (45 days) stay at-35°C. Short-term (3 days) cooling down to-50°C was tolerable for 40% of adult individuals; down to-55°C, for 80% of the underyearlings...
Zhou Z, Fortuny J, Marcé Nogué J, Skutschas P. Cranial biomechanics in basal urodeles: the Siberian salamander (Salamandrella keyserlingii) and its evolutionary and developmental implications. Sci Rep. 2017;7:10174 pubmed publisher
..c) Bone loss may be originated due to biomechanical optimization and potential reduction of developmental costs. (d) Hynobiids are excellent models for biomechanical reconstruction of extinct early urodeles. ..
Zhang P, Chen Y, Zhou H, Wang X, Qu L. The complete mitochondrial genome of a relic salamander, Ranodon sibiricus (Amphibia: Caudata) and implications for amphibian phylogeny. Mol Phylogenet Evol. 2003;28:620-6 pubmed