Text-fig. 6. Simplified morphology of thoracic tergites of Hydrocephalus, Paradoxides, Eccaparadoxides and Acadoparadoxides. Morphology of Hydrocephalus based on H. carens (according to Whittington 1990) and H. minor; morphology of Paradoxides based on P. paradoxissimus gracilis; morphology of Eccaparadoxides and Acadoparadoxides based on E. pradoanus (according to Esteve et al. 2013) and A. cf. sacheri.