SimoniteUthiS, a new vampyromorph coleoid with prey in its arms from the Early Jurassic of Luxembourg Author Fuchs, Dirk Bayerische Staatssammlung FÜr Paläontologie Und Geologie, Richard-Wagner-Strasse 10, 80333 Munich, Germany Author Weis, Robert Musée National d’histoire Naturelle, Luxembourg, 25 Rue MÜnster, Author Thuy, Ben Musée National d’histoire Naturelle, Luxembourg, 25 Rue MÜnster, text Swiss Journal of Palaeontology 2024 6 2024-02-14 143 1 1 10 http://dx.doi.org/10.1186/s13358-024-00303-y journal article 10.1186/s13358-024-00303-y 1664-2384 12006446 Suborder Loligosepiina Jeletzky, 1965 Family undetermined (? Loligosepiidae Regteren Altena, 1949 Or Geopeltidae Regteren Altena, 1949 ) Remarks: The main difference between the Loligosepiidae and the Geopeltidae concerns the length of the hyperbolar zone, which is shorter in Geopeltidae than in Loligosepiidae . An additional character that delimits these two closely related families represents the shape of the hyperbolar zone (V-shaped in Loligosepiidae and arcuated in Geopeltidae ).