This was formerly considered a
monotypic genus containing only C. wagneri, but phylogenetic studies suggest that hellenicus and graecus, formerly placed in Eudontomyzon, also belong to this genus.[2][3]
Evolution
Phylogenetic studies indicate that they are the most
basal members of the
familyPetromyzontidae, and their lineage diverged from the other genera in the family (Petromyzon and Ichthyomyzon) in the
Late Cretaceous. The wagneri lineage diverged from the graecus+hellenicus lineage during the
Eocene, although both Greek species only diverged during the late
Pliocene.[4]
Ecology
Unlike other lampreys, species of Caspiomyzon are suspected to feed on carrion rather than live prey.[5]