Introduction Teleosauroid crocodylomorphs—distant extinct relatives of extant crocodylians (which include alligators, crocodiles, caimans and gavials)—were a near-globally distributed clade that frequented freshwater, brackish, lagoonal and deep-water marine ecosystems throughout the Jurassic (Buffetaut, 1982; Hua & Buffetaut, 1997; Hua, 1999; Young et al., 2014; Foffa, Young & Brusatte, 2015; Foffa et al., 2019; Johnson et al., 2015; Martin et al., 2016; Johnson et al., 2017, 2018; Johnson,...