Pidal, R. (2021) «A Lower Devonian (Emsian) species of the genus Bactrocrinites (crinoidea): Bactrocrinites robustus n. sp. (Cantabrian Mountains, NW Spain)», Spanish Journal of Palaeontology, 23(2), pp. 267–271. doi: 10.7203/sjp.23.2.20411.