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- [6] Calcified cartilage in the paired fins of the osteostracan Escuminaspis laticeps (Traquair 1880), from the Late Devonian of Miguasha (Quebec, Canada), with a consideration of the early evolution of the pectoral fin endoskeleton in vertebrates JOURNAL OF VERTEBRATE PALEONTOLOGY, 2004, 24 (04) : 773 - 779