Sylvain Charbonnier

Jul 31, 2023 | frontiersin.org | Ludwig Maximilian |Czech Academy |Sylvain Charbonnier |Paul Selden

IntroductionEuchelicerata is a successful clade of arthropods including Xiphosura, Chasmataspidida, Eurypterida, and Arachnida. Xiphosura is a group with extant representatives, which has an extensive fossil record dating back to the Ordovician (Rudkin et al., 2008; van Roy et al., 2015; Lamsdell et al., 2023). The earliest described xiphosuran fossil remains come from the Williams member of the Stone Mountain formation of Manitoba, Canada which dates to the latest Ordovician at c.