Here we apply a molecular systematic approach on 82 complete mitochondrial genomes to investigate the phylogeny of the Elasmobranchii. Although considered of ecological, commercial and conservation importance, the phylogeny of this old group is poorly studied and still under debate. The group dates back about 400 million years near the Devonian-Silurian boundary, being nowadays represented by several derivative lineages, mainly related to Mesozoic forms. The Elasmobranchii is a diverse subclass of Chondrichthyes, or cartilaginous fish, with about 1200 species of ocean- and freshwater-dwelling fishes spread all over the world's seas, including some of the ocean's largest fishes. Here we present a mitogenomic perspective on the evolution of sharks and rays, being a first glance on the complete mitochondrial history of such an old and diversified group of vertebrates. The mitogenomic phylogeny of the Elasmobranchii (Chondrichthyes).Īmaral, Cesar R L Pereira, Filipe Silva, Dayse A Amorim, António de Carvalho, Elizeu F
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