"A new aquatic beetle (Adephaga: Coptoclavidae) from the Middle Jurassic Daohugou Biota" by Liang Bao, Lan Li, Kecheng Niu, Niya Wang, David M. Kroeck, Tong Bao published in The Anatomical Record (https://doi.org/10.1002/ar.25221). The above article published online on 10 April, 2023 in Wiley Online Library (wileyonlinelibrary.com) has been withdrawn by agreement between the authors, the Editor in Chief, Dr. Heather F. Smith, and John Wiley and Sons Ltd. The authors have found that, after reassessing the museum database, the dating of the specimen is wrong and the article's conclusions, therefore, are based on data which is invalid. The authors have requested this retraction, and sincerely apologize for this serious mistake.
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