PLIOPLATECARPINAE DOLLO, 1884

Diagnosis (after Konishi and Caldwell 2011)― Russellosaurines generally of medium size, mandible length rarely reaching 100 cm; quadrate ala laterally expanded with uniformly curved border, thin in the center; distinct alar concavity present immediately dorsal to mandibular condyle;surprastapedial process elongate, at least reaching mid-height of quadrate; process often ending with blunt terminus; canal(s) for basilar artery through basisphenoid and basioccipital exiting as large opening(s) on medullary floor; jaws slender; a large foramina on lateroventral/ventral face of retroarticular process; marginal tooth crowns slender, distally tapering and posteromedially recurved from mid-height; middle and posterior tooth crowns typically bicarinate, two carinae aligned in anteroposterior orientation and dividing crown surface semi-equally; marginal tooth crown medially finely striated, laterally faceted or fluted to various extent;tooth crown with sub-circular basal cross-section; intermediate and terminal caudal centra horizontally short, centrum length not exceeding centrum height more than 1.5 times.

Included Genera— Platecarpus Cope (1869), Plioplatecarpus Dollo (1882), Goronyosaurus Azzaroli et al. (1972), Angolasaurus Antunes (1964), Ectenosaurus Russell (1967); Selmasauru s Wright and Shannon (1988), Russellosaurus Polcyn and Bell (2005), Latoplatecarpus Konishi and Caldwell (2011), Plesioplatecarpus Konishi and Caldwell (2011), Gavialimimus Strong et al. (2020), and Sarabosaurus dahli Polcyn et al. (2023).