outer fin tissue
Part of the fin consisting of flattened epidermal cells elevated into a keel-like structure. [ http://www.ncbi.nlm.nih.gov/pubmed/15188431 ]
Term info
outer fin tissue
In frogs (Anura) the outer fin tissue is present only in tadpoles and sometimes during the embryogenesis of species without tadpoles. In salamanders and caecilians tail fins can persist into reproductive maturity.
amphibian_anatomy_curators
outer fin
uberon/phenoscape-anatomy
tail fin, outer tail fin