Robuta

https://pmc.ncbi.nlm.nih.gov/articles/PMC4001811/ Evolving possibilities: Post-embryonic axial elongation in salamanders with biphasic (Eurcyea... Typically the number of vertebrae an organism will have post-embryonically is determined during embryogenesis via the development of paired somites. Our... evolvingpossibilitiespostembryonicaxial