Review of the Late Jurassic erymoid lobsters (Crustacea: Decapoda) Author Devillez, Julien Muséum national d’Histoire naturelle, Paris Centre de Recherche en Paléontologie – Paris (CR 2 P, UMR 7207), Sorbonne Université, MNHN, UPMC, CNRS, 57 rue Cuvier, F- 75231 Parix cedex 05 Paris (France) julien.devillez@edu.mnhn.fr Author Charbonnier, Sylvain Muséum national d’Histoire naturelle, Paris Centre de Recherche en Paléontologie – Paris (CR 2 P, UMR 7207), Sorbonne Université, MNHN, UPMC, CNRS, 57 rue Cuvier, F- 75231 Parix cedex 05 Paris (France) sylvain.charbonnier@mnhn.fr text Geodiversitas 2021 2021-01-28 43 2 25 73 journal article 10.5252/geodiversitas2021v43a2 a2545208-1888-44e9-82d3-b429219cd070 1638-9395 4486479 urn:lsid:zoobank.org:pub:6EF0DFAC-609D-407D-B4CC-CB985C3295FC Genus Stenodactylina Beurlen, 1928 ( Fig. 1 J-L) Stenodactylina Beurlen, 1928: 175 . — Glaessner 1969: 456 . — Schweigert 2013: 411 . — Devillez et al. 2016: 522 , figs 1D-F. Erymastacus Beurlen, 1928: 171 (pars.). — Secrétan 1964: 71 . — Glaessner 1969: 456 (pars.). — Hyžný et al. 2015: 375 . TYPE SPECIES. — Stenodactylina liasina Beurlen, 1928 , by monotypy. DIAGNOSIS BY Devillez & Charbonnier (2019) . — Fusiform intercalated plate; narrow post-orbital area; deep, very wide cervical groove, joined to dorsal margin and to antennal groove; short gastro-orbital groove originating as a slight median inflexion of cervical groove; postcervical and branchiocardiac grooves nearly parallel; narrow postcervical groove, not joined to branchiocardiac groove and interrupted in hepatic region; branchiocardiac groove strongly inclined, joined to hepatic groove; hepatic groove concavo-convex, joined to cervical groove; inferior groove convex posteriorly, joined to hepatic groove; chelate P1; P1 propodus rectangular or trapezoidal, with inner margin more compressed than outer margin, with a wide dactylar bulge; P1 with extremely long and slender fingers, equal in length; P1 chela (form I; Fig. 1K ) with strong, rectangular or trapezoidal propodus, bearing straight or sinuous fingers, strongly narrowing immediately after their basis; outer margin convex at the basis of the index; P1 chela (form II; Fig. 1L ) with trapezoidal propodus, outer margin straight or convex, straight fingers, narrowing gradually to their distal extremity.