Ontogenetic changes in long-bone histology of the cryptobranchid Eoscapherpeton asiaticum (Amphibia: Caudata) from the Late Cretaceous of Uzbekistan

This paper presents histological data on the long bones of different size (age) individuals of the basal cryptobranchid salamander Eoscapherpeton asiaticum from the Upper Cretaceous (Turonian) of Uzbekistan. E. asiaticum is similar to modern members of Cryptobranchidae in being relatively large (estimated body length up to 50–60 cm), aquatic, and neotenic. The analysis of growth series of femora demonstrates a significant histological maturation...