On unreported historical specimens of marine arthropods from the Solnhofen and Nusplingen Lithographic Limestones (Late Jurassic, Germany) housed at the Muséum national d’Histoire naturelle, Paris Author Odin, Giliane P. Author Charbonnier, Sylvain Author Devillez, Julien Author Schweigert, Günter text Geodiversitas 2019 2019-09-23 41 17 643 662 journal article 10.5252/geodiversitas2019v41a17 857eb594-755e-493e-a705-602b5d46e686 1638-9395 3695414 urn:lsid:zoobank.org:pub:541CF827-F02E-4086-8FB0-2C0033DD429A Family ERYMIDAE Van Straelen, 1925 PRELIMINARY REMARKS Eryma modestiforme ( Schlotheim, 1822 ) ( Fig. 6 ), Palaeastacus fuciformis ( Schlotheim, 1822 ) ( Fig. 7 ) and Pustulina minuta ( Schlotheim, 1822 ) ( Fig. 7 ) are the three most common erymids found in the Solnhofen Lithographic Limestones. Numerous specimens are almost complete, but the compression often impedes the identification of the carapace grooves, which are important for the systematic of the Erymidae . Instead, we use the general ornamentation and the features of the P1 chelae (shape and ornamentation) to distinguish the erymid lobsters. Indeed, P. fuciformis and P. minuta have P1 chelae with a subrectangular propodus bearing short and wide fingers, while the fingers of E. modestiforme are longer than the propodus and are progressively narrowing to their distal extremity. Moreover, E. modestiforme is ornamented by small tubercles and depressions, while P. minuta is covered by coarse rounded tubercles and P. fuciformis bears strong spines on its carapace and its P1 propodus.