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 Genus Antrimpos Münster, 1839 TYPE SPECIES . — Antrimpos speciosus Münster, 1839 , by subsequent designation of Glaessner(1929) . TRANSLATION OF THE ORIGINAL DIAGNOSIS (from Münster 1839 ). — Antennules short; antennae very long, with a very long scaphocerite; chelate P1-P3, increasing in length, with movable dactyli; cylindric flattened cephalothorax; rostrum dentate; pointed telson and subrounded uropodal exopod. TRANSLATION OF THE EMENDED DIAGNOSIS (from Oppel 1862 ). — Antennules very short, of different length, antennae of twice the length of the body, rostrum dentate, spiny Mxp3; chelate P1-P3, increasing in length, and achelate P4-P5; S5 longest; cuticle smooth except on the dorsal area of the carapace, which is covered with small pits. TRANSLATION OF THE EMENDED DIAGNOSIS (from Van Straelen 1925 ). — Rostrum dentate – often on both sides; antennules of different length; antennae to twice length of body; chelate P1-P3 and achelate P4-P5. EMENDED DIAGNOSIS (from Glaessner 1969 ). — Antennules very short, antennae to twice length of body, rostrum dentate, carapace smooth, thin; length of pereiopods increasing from 1 to 3; 6 th abdominal somite longest. EMENDED DIAGNOSIS (from Schweigert et al. 2016 ). — Carapace subrectangular, laterally flattened; rostrum elongate slightly turned upward distally, with nine dorsal teeth and one ventral tooth distally; epigastric tooth; Mxp3 short and smooth; uropodal exopod with a subrounded diaresis. EMENDED DIAGNOSIS (present work). — Carapace subrectangular, laterally flattened; elongate rostrum slightly turned upward distally, with several dorsal teeth and one ventral tooth; longitudinal rostral carina; epigastric tooth; postorbital spine; very strong and asymmetrical hepatic spine, with elongate dorsal segment and short ventral one; concave cervical groove rimming the upper segment of hepatic spine; subhorizontal hepatic ridge below hepatic spine; s1-s3 with rounded median lateral processes (subtle in s3); Mxp3 short and smooth; chelate P1-P3, increasing in length, achelate P4-P5; uropodal exopod with a subrounded diaresis.