Dastilbe

Dastilbe is an extinct genus of prehistoric marine & freshwater ray-finned fish from the Early Cretaceous of Brazil. It was a relative of modern milkfish.

== Taxonomy == Only one definitive species is known, D. crandalli Jordan, 1910 from the Aptian of the Muribeca Formation (Sergipe-Alagoas Basin) and the Crato Formation, where it is an abundant fossil fish. The species D. elongatus Silvas Santos, 1947 from the Parnaíba Basin (Codó Formation) is sometimes considered its own species, but is now generally considered synonymous with D. crandalli. Other studies have found extensive morphological variation within D. crandalli, and have suggested that it may represent a species complex. Potential undescribed species are also known from the Maceió Formation of the Alagoas Basin, and at levels of the Muribeca Formation younger than the levels that D. crandalli was found in.