Biogeographical and Biostratigraphical Significance of a New Middle Devonian Phacopid Trilobite from the Naidaijin Formation, Kurosegawa Terrane, Kyushu, Southwest Japan Stocker, Christopher and Tanaka, Gengo and Siveter, Derek J. and Lane, Philip and Tsutsumi, Yukiyasu and Komatsu, Toshifumi and Wallis, Simon and Oji, Tatsuo and Siveter, David J. and Williams, Mark, Paleontological Research, 22, 75-90 (2018), DOI:http://dx.doi.org/10.2517/2017PR011