The inaccuracy of using both commonly-used indicators of shell form and depositional environment has been noted by several workers (Joyce and Gauthier 2003). Indicators with a more direct correlation to habitat preference include the presence of lachrymal glands and the relative proportions of the forelimb. Data regarding the forelimb proportions of the Eurysternidae and their palaeoecological implications is presented here for the first time. New work during the course of this study has also examined the links between humeral-femoral indices and aquatic capabilities for the first time in Late Jurassic testudines.