An R-package version of a modeling approach for classifying mammal age based on morphometric measurements. Requires JAGS. See the following paper for details:
Lichti, NI; Kellner, KF; Smyser, TJ; and SA Johnson. 2017. Bayesian model-based age classification using small mammal body mass and capture dates. Journal of Mammalogy. doi: 10.1093/jmammal/gyx057.