A new antiarch placoderm from the Emsian (Early Devonian) of Wuding, Yunnan, China

Pan, Z., Zhu, M., Zhu, Y. &amp; Jia, L., August 2017. A new antiarch placoderm from the Emsian (Early Devonian) of Wuding, Yunnan, China. <i>Alcheringa 42</i>, 10–21. ISSN 0311-5518. <i>Wufengshania magniforaminis</i>, a new genus and species of the Euantiarcha (Placodermi: Antiarcha), is described from the late Emsian (Early Devonian) of Wuding, Yunnan, southwestern China. The referred specimens were three-dimensionally preserved in black shales, allowing a high-resolution computed tomography reconstruction of anatomical details. The new euantiarch is characterized by a large orbital fenestra, an arched exoskeletal band around the orbital fenestra and a developed obtected nuchal area of the skull roof. Maximum parsimony analysis, using a revised data-set of antiarchs with 44 taxa and 66 characters, resolves <i>Wufengshania</i> gen. nov. as a member of the Bothriolepididae, which is characterized by the presence of the infraorbital sensory canal diverging on the lateral plate, and the nuchal plate with orbital facets. New analysis supports a sister group relationship between <i>Dianolepis</i> and the Bothriolepididae. <i>Luquanolepis</i>, a coeval euantiarch from the neighboring site of the new form, is referred to the Asterolepidoidei and represents the basalmost and earliest member of the Asterolepidoidei. <i>Zhaohui Pan* [</i>[e-mail]<i>], Min Zhu* [</i>[e-mail]<i>], You’an Zhu</i>^<i>†</i><i>[</i>[e-mail]<i>]</i> and <i>Liantao Jia [</i>[e-mail]<i>] Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, PO Box 643, Beijing 100044, PR China. *Also affiliated with University of Chinese Academy of Sciences, Beijing, 100049, PR China.</i> ^<i>†</i><i>Also affiliated with Uppsala University, PO Box 256, 751 05 Uppsala, Sweden.</i>