A new antiarch placoderm from the Emsian (Early Devonian) of Wuding, Yunnan, China. Issue 1 (2nd January 2018)

• Record Type: Journal Article
• Authors: Pan, Zhaohui; Zhu, Min; Zhu, You'An; Jia, Liantao
• Is Part Of: Alcheringa. Volume 42:Issue 1(2018)
• Page Start: 10
• Page End: 21
• Publication Date: 2018-01-02
• Subjects: Antiarcha -- Placodermi -- Early Devonian -- HRCT scanning -- morphology; Paleontology -- Australasia -- Periodicals; 560.99405
• DOI: 10.1080/03115518.2017.1338357
• Languages: English
• ISSNs: 0311-5518

Abstract

Abstract : Pan, Z., Zhu, M., Zhu, Y. &Jia, L., August 2017. A new antiarch placoderm from the Emsian (Early Devonian) of Wuding, Yunnan, China. Alcheringa 42, 10–21. ISSN 0311-5518. Wufengshania magniforaminis, 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 Wufengshania 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 Dianolepis and the Bothriolepididae. Luquanolepis, 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. Zhaohui Pan* [ [e-mail] ], Min Zhu* [ [e-mail] ], You'an Zhu † [ [e-mail] ] and Liantao Jia [ [e-mail] ] 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. † Also affiliated with Uppsala University, PO Box 256, 751 05 Uppsala, Sweden.