Re-appraisal of thylacocephalans (Euarthropoda, Thylacocephala) from the Jurassic La Voulte-sur-Rhône Lagerstätte Author Laville, Thomas EDDB1B51-2017-405B-9A92-52EA900A13CA Muséum national d’Histoire naturelle, Centre de Recherche en Paléontologie - Paris (CR 2 P, UMR 7207), Sorbonne Université-MNHN-CNRS, 57 rue Cuvier, 75005 Paris, France. & Biogéosciences, UMR 6282 CNRS, Université de Bourgogne, 6 boulevard Gabriel, 2100 Dijon, France. thomas.laville2@mnhn.fr Author Forel, Marie-Béatrice 063C1F7E-6D26-48F9-A8B1-2AFA496B5FB8 Muséum national d’Histoire naturelle, Centre de Recherche en Paléontologie - Paris (CR 2 P, UMR 7207), Sorbonne Université-MNHN-CNRS, 57 rue Cuvier, 75005 Paris, France. marie-beatrice.forel@mnhn.fr Author Charbonnier, Sylvain 2B4CC15F-FB7A-4AAF-8CB5-365E976850FA Muséum national d’Histoire naturelle, Centre de Recherche en Paléontologie - Paris (CR 2 P, UMR 7207), Sorbonne Université-MNHN-CNRS, 57 rue Cuvier, 75005 Paris, France. sylvain.charbonnier@mnhn.fr text European Journal of Taxonomy 2023 2023-10-05 898 1 1 61 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2295/9941 journal article 10.5852/ejt.2023.898.2295 2118-9773 8413500 87EE2C76-1DDC-40DE-87E7-4D0E11A312DC Genus Austriocaris Glaessner, 1931 Type species Austriocaris carinata Glaessner, 1931 by monotypy. Original diagnosis ( Rolfe 1969 ) Carapace only known, posterior excavation arcuate or irregular, anterior margin concave or produced into small beak; posteroventral or ventromedian V-shaped furrow; surface smooth with mid-dorsal granulations or posteroventral pits, or dorso-ventrally striate. Emended diagnosis Thylacocephala with an optic notch occupying only the ventral part of the anterior margin, presence of a straight mid-dorsal line and a sharp postero-ventral corner. Remarks Rolfe (1969) inversed the orientation of the shield of Austriocaris , the posterior being identified as the anterior. This influenced his diagnosis, with the optic notch being described as a posterior notch.