Machimosauridae

Machimosauridae is an extinct family of teleosauroid thalattosuchian crocodyliforms. The family was first identified in 2016, when fossils of teleosauroid thalattosuchians, including an indeterminate close relative of Lemmysuchus and Machimosaurus, were described from the Middle Jurassic (Bathonian) of Morocco. The family was largely expanded in 2020 when the systematics of Teleosauroidea were re-reviewed. Members of this family generally were larger than the teleosaurids.

== Classification == Machimosauridae is a diverse group of teleosauroids, phylogenetically defined in the PhyloCode by Mark T. Young and colleagues as "the largest clade within Teleosauroidea containing Machimosaurus hugii, but not Teleosaurus cadomensis." The less inclusive subfamily Machimosaurinae is defined in the PhyloCode as "the largest clade within Teleosauroidea containing Machimosaurus hugii, but not Deslongchampsina larteti, Macrospondylus bollensis, and Charitomenosuchus leedsi". The tribe Machimosaurini contains the largest, most robust, and latest living machimosaurids and is defined in the PhyloCode as "the largest clade within Teleosauroidea containing Machimosaurus hugii, but not Neosteneosaurus edwardsi". The members of the Machimosauridae share several unique characters among teleosauroids, which are: dorsally oriented external nares the premaxillary anterior and anterolateral margins are not sub-vertical and do not extend ventrally the premaxilla-maxilla suture is sub-rectangular and slightly interdigitating (most noticeably near the midline) no anterolateral expansion of the supratemporal fenestrae the postorbital is excluded from the orbit posteroventral margin a mostly horizontal pterygoid with a distinct posterolateral angle the cultriform process of the basisphenoid is exposed and bifurcates the pterygoids