New eryonid crustaceans from the Late Jurassic Lagerstatten of Cerin (France), Canjuers (France), Wattendorf (Germany) and Zandt (Germany)

The Late Jurassic plattenkalks from Europe are remarkable for their exquisitely preserved crustaceans. New specimens of polychelidan lobsters (Crustacea, Decapoda, Polychelida) from the Lagerstatten of Cerin (France), Canjuers (France), Wattendorf (Germany) and Zandt (Germany) are described and increase the palaeobiodiversity of Jurassic eryonids. Soleryon gen. nov. is described from the Cerin, Wattendorf and Zandt Lagerstatten while Cycleryon bourseaui sp. nov. is described from the Cerin and Canjuers Lagerstatten. Soleryon amicalis gen. et sp. nov. from Cerin and S. schorri sp. nov. from Wattendorf show cephalothoracic grooves that are not observed within any other fossil eryonids. Their patterns of cephalothoracic grooves are similar to those observed in extant polychelids and confirm the affinities of eryonids and polychelids. The problematic assignment of Eryon perroni etallon, 1859 from the Oxfordian nodules of eastern France is solved and leads to the new combination Soleryon perroni (etallon, 1859). These new eryonids are preserved in anatomical connection and thus suggest they used to live in proximity to their depositional environments. They may have inhabited the coral reefs neighbouring the lagoons and/or buried themselves in the carbonate mud of the lagoon margins at the origin of the plattenkalks. The co-occurrences of Soleryon gen. nov. and Cycleryon Glaessner, 1965 in four subcontemporaneous Lagerstatten clearly suggest connections between the Bavarian (Wattendorf, Zandt), the Jura (Cerin) and the Provence (Canjuers) platforms. For the first time, several species of crustaceans highlight and confirm the palaeobiogeographical links between the French and German plattenkalks at the end of the Jurassic. http://zoobank.org/urn:lsid:zoobank.org:pub:76AD86C3-C677-49EA-B742-0ACA6EB90F72