{"refrec":{"BRefID":284883,"RR":"<b>Siveter, D.J.; Briggs, D.E.G.; Siveter, D.J.; Sutton, M.D.; Legg, D.</b> (2017). A new crustacean from the Herefordshire (Silurian) Lagerstätte, UK, and its significance in malacostracan evolution. <i>Proc. - Royal Soc., Biol. Sci. 284(1851)</i>: 1-8. <a href=\"https://dx.doi.org/10.1098/rspb.2017.0279\" target=\"_blank\">https://dx.doi.org/10.1098/rspb.2017.0279</a>","BEntID":276907,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Proc. - Royal Soc., Biol. Sci. 284(1851)</i>: 1-8. <a href=\"https://dx.doi.org/10.1098/rspb.2017.0279\" target=\"_blank\">https://dx.doi.org/10.1098/rspb.2017.0279</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Siveter, D.J.; Briggs, D.E.G.; Siveter, D.J.; Sutton, M.D.; Legg, D.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Siveter, D.J. <i>et al.</i>","Englishabstract":"<i>Cascolus ravitis</i> gen. et sp. nov. is a three-dimensionally preserved fossil crustacean with soft parts from the Herefordshire (Silurian) Lagerstätte, UK. It is characterized by a head with a head shield and five limb pairs, and a thorax (pereon) with nine appendage-bearing segments followed by an apodous abdomen (pleon). All the appendages except the first are biramous and have a gnathobase. The post-mandibular appendages are similar one to another, and bear petal-shaped epipods that probably functioned as a part of the respiratory–circulatory system. Cladistic analysis resolves the new taxon as a stem-group leptostracan (Malacostraca). 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