Jurassic brachyurans of the genus Bucculentum Author Krzemińska, Ewa Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Poland Author Starzyk, Natalia 0000-0003-2785-6661 Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Poland & https: // orcid. org / 0000 - 0003 - 2785 - 6661 Author Fraaije, René H. B. 0000-0002-3465-1093 Oertijdmuseum, The Netherlands. https: // orcid. org / 0000 - 0002 - 3465 - 1093 Author Schweigert, Günter 0000-0003-3798-8609 Staatliches Museum für Naturkunde Stuttgart, Germany. https: // orcid. org / 0000 - 0003 - 3798 - 8609 Author Lukeneder, Alexander 0000-0002-8384-3366 Natural History Museum of Vienna, Austria. https: // orcid. org / 0000 - 0002 - 8384 - 3366 text Zootaxa 2021 2021-09-08 5032 3 395 410 journal article 10.11646/zootaxa.5032.3.5 1175-5326 5497036 321FAB6F-EEF4-4273-A2EA-C5EDFD08611F Genus Bucculentum Schweitzer & Feldmann, 2009 Diagnosis . After Schweitzer & Feldmann (2009), amended. Carapace roughly rectangular; rostrum tri-lobed, projected well beyond frontal margin of carapace; orbit appearing to be placed under rostrum, augenrest on hepatic region of dorsal carapace, bounded by spines or ridges; hepatic region strongly inflated; groove (named here augenrest groove) leading from mid dorsal margin of augenrest to cervical groove; cervical and branchio-cardiac grooves deep; urogastric region not well defined, depressed below level of metagastric and cardiac regions; cardiac region elevated, its dominant tubercle making highest point of carapace. Type species: Nodoprosopon bucculentum Wehner, 1988 .