Adynomosaurus arcanus, a new lambeosaurine dinosaur from the Late Cretaceous Ibero-Armorican Island of the European archipelago

The South Pyrenean Foredeep Basin in northeastern Spain preserves one of the best-documented paleontological records of European terrestrial vertebrates for the last few million years of the Mesozoic Era. We describe Adynomosaurus arcanus gen. et sp. nov., a lambeosaurine hadrosaurid from strata nearly four million years older than the other recognized lambeosaurine in the basin, Pararhabdodon isonensis. This species is the second hadrosaurid...