Dastilbe

Dastilbe is an extinct genus of prehistoric bony fish from the Aptian.
Description.
"Dastilbe" could reach a length of , with a maximum length of about . It was probably an anadromous fish, tolerant of hypersalinity and subjected to frequent mass mortality. Larger individuals of this predatory fish fed on small fishes and probably they were also cannibalistic.
Distribution.
"Dastilbe" was a primitive gonorynchiform fish widespread in Gondwanaland. Fossils of this fish have been found in the Aptian stage of the Lower Cretaceous Cabo, Codo and Crato Formations of northeastern Brazil and in the Lower Cretaceous of Africa.
Taxonomy.
The type species "Dastilbe crandalli" was described by the American ichthyologist David Starr Jordan from specimens collected in Brazil, up to four species have been suggested as comprising "Dastilbe" but other authorities have suggested that the genus is monotypic, comprising a single phenotypically plastic species "D. crandalli".