Jurassic lepidosaurs

Pleurosaurus, from Ancient Greek πλευρά (pleurá), meaning "rib" or "side", and σαυρος (sauros), meaning "lizard", is an extinct genus of aquatic reptiles belonging to the order Rhynchocephalia. Pleurosaurus fossils have primarily been discovered in the Solnhofen Limestone of Bavaria, Germany and the Canjuers lagerstatte near Canjuers, France, both dating to the Late Jurassic. It contains two species, P. goldfussi and P. ginsburgi.

Pleurosauridae, from Ancient Greek πλευρά (pleurá), meaning "rib" or "side", and σαῦρος (saûros), meaning "lizard", is an extinct family of sphenodontian reptiles, known from the Jurassic of Europe. Members of the family had long snake-like bodies with reduced limbs that were adapted for aquatic life in marine environments. It contains two genera, Palaeopleurosaurus, which is known from the Early Jurassic (Toarcian) Posidonia Shale of Germany, as well as Pleurosaurus from the Late Jurassic of Germany and France. Paleopleurosaurus is more primitive than the later Pleurosaurus, with a skull simi

Clevosaurus (meaning "Gloucester lizard") is an extinct genus of rhynchocephalian reptile from the Late Triassic and the Early Jurassic periods. Species of Clevosaurus were widespread across Pangaea, and have been found on all continents except Australia and Antarctica. Five species of Clevosaurus have been found in ancient fissure fill deposits in south-west England and Wales, alongside other sphenodontians, early mammals and dinosaurs. In regards to its Pangaean distribution, C. hadroprodon is the oldest record of a sphenodontian from Gondwana, though its affinity to Clevosaurus has been que

Oenosaurus is an extinct genus of sphenodontian reptile from the Late Jurassic (Tithonian) aged Mörnsheim Formation of Germany. thumb|left|Close up of tooth plate

Homoeosaurus is an extinct genus of rhynchocephalian reptile, known from the Late Jurassic-earliest Cretaceous of Europe, with specimens being reported from France (Canjuers Lagerstatte), England (Purbeck Group) and Germany (Solnhofen Limestone). Several species have been described within the genus, based on varying proportions of the limb bones to the body length based on the presacral vertebrae. Specimen C.M.6438 of H. maximiliani from Germany has a total length of around , with a skull length of about . In comparison to other rhynchocephalians, the limbs are proportionally long. Recent stud

left|thumb|Restoration of the skull in lateral and dorsal view Palaeopleurosaurus (meaning "old side lizard") is an extinct genus of diapsid reptiles belonging to the group Sphenodontia.

Proaigialosaurus is an extinct genus of semi-aquatic diapsid reptile. The genus was erected by Kuhn (1958), based upon skull fragments, which have since been lost.

Cynosphenodon ( ; "Dog Sphenodontian") is an extinct genus of rhynchocephalian in the family Sphenodontidae from the Middle Jurassic La Boca Formation of Tamaulipas, Mexico. It is known from a largely complete lower jaw and fragments of the upper jaw. It is suggested to be among the closest known relatives of the tuatara, with both being placed in the Sphenodontinae, which is supported by among other characters, the growth pattern of the teeth.