Gastric brooding in the recently extinct gastric-brooding frog Rheobatrachus silus not surprisingly involved major changes in the structure of the stomach (Corben et al. 1974; Tyler and Carter 1981; Fanning et al. 1982; Gibbins and Tyler 1983; Tyler et al. 1983). Remarkably, however, although the froglets of R. vitellinus, a second (also now extinct) gastric-brooding frog described by Mahoney et al. in 1984, were also clearly brooded in the stomach, in R. vitellinus no major changes were seen in the structure of the stomach of brooding individuals (McDonald and Tyler 1984; Leong et al. 1986). Sadly, both of these frogs are now extinct, making further physiological investigations impossible.
No one has provided updates yet.