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Type: Article
Published: 2019-10-31
Page range: 515–522
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The supposed giant spider Mongolarachne chaoyangensis, from the Cretaceous Yixian Formation of China, is a crayfish

College of Life Sciences, Capital Normal University, Beijing, 100048, China Department of Geology, University of Kansas, 1475 Jayhawk Boulevard, Lawrence, Kansas 66045, USA Natural History Museum, Cromwell Road, London SW7 5BD, UK
Department of Geology, University of Kansas, 1475 Jayhawk Boulevard, Lawrence, Kansas 66045, USA
Department of Geology, University of Kansas, 1475 Jayhawk Boulevard, Lawrence, Kansas 66045, USA
College of Life Sciences, Capital Normal University, Beijing, 100048, China
College of Life Sciences, Capital Normal University, Beijing, 100048, China Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013-7012, USA
Dalian Natural History Museum, Dalian 116023, Liaoning, China
Crustacea Arachnida Araneae Astacidea Decapoda faked fossil fluorescence microscopy


A supposed giant spider, Mongolarachne chaoyangensis Cheng, Liu, Huang, Liu, Li & Li, 2019, from the Lower Cretaceous Yixian Formation of China, is here shown, with the aid of fluorescence microscopy, to be a faked fossil spider, with a fossil crayfish as its core. We tentatively place M. chaoyangensis in Cricoidoscelosus aethus Taylor, Schram & Shen, 1999 n. syn..


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