Search Results for: Other aquatic invertebrates
basal skeletal elements, the radials, which represent the link or connection between these fins and the internal skeleton (e.g., pelvic and pectoral girdles). contents overview diversity fossil record classification notes references credits as a group, the ray-finned fish play a huge role not only in aquatic
example, have scales , which may be either the more primitive ganoid form(diamond-shaped, shiny, hard, and multilayered), or the more advanced cycloid or ctenoid forms, which overlap a bit like roof tiles from head to tail to reduce drag. cycloid scales have smooth edges and ctenoid have rough edges. other...
https://www.newworldencyclopedia.org/entry/Actinopterygii