Fossil Chondrichthyes from the Neogene of Portugal: Diversity and Occurrence

Portugal has a rich fossil record both on the continent and in Azores islands (Santa Maria). For decades, researchers have found thousands of fossils identified hundreds species from major taxonomic groups. The present work focuses analyzing scientific literature Chondrichthyes collected fossiliferous deposits Neogene. Fossils sharks rays, teeth, dermal denticles, caudal spines were discovered Aquitanian to Piacenzian (Neogene). About 105 studied mainland Island Santa Maria, most which disappeared or are currently inaccessible. In total, 36 publications list 91 Chondrichthyes, 11 described for first time Portugal, 61 genera. Twelve orders represented material published so far.