Coelurosauravus (meaning "hollow lizard grandfather") is an extinct genus of gliding reptile, known from the Late Permian of Madagascar.

[1] Coelurosauravus is solely known from the type species, C. elivensis, which was named by Jean Piveteau in 1926 based on fossils from the Lower Sakamena Formation of Madagascar.

Like other weigeltisaurids, the penultimate phalanges are elongated, which in combination with their recurved unguals indicative of claws were likely an adaption to cling to tree bark.

Preserved fossils of Weigeltisaurus show that the bony rods had a high degree of flexibility, similar to the ribs of living gliding lizards.

[9] However, some authors have considered that the unique configuration and aspect ratio of the wings of weigeltisaurids means that the comparison needs to be tested experimentally.

[6] The Lower Sakamena Formation was deposited in a wetland environment situated within a North-South orientated rift valley, perhaps similar to Lake Tanganyika.

The climate at the time of deposition was temperate, warm, and humid, with seasonal rainfall and possible monsoons[2] Flora from the formation includes the equisetalean Schizoneura, the glossopterid gymnosperm Glossopteris, and seed fern Lepidopteris.

Other vertebrates known from the Lower Sakamena Formation include the palaeoniscoid fish Atherstonia, the procolophonid parareptile Barasaurus, the neodiapsids Hovasaurus, Claudiosaurus, Thadeosaurus, and Acerosodontosaurus, fragments of rhinesuchid temnospondyls, an indeterminate theriodont therapsid and the dicynodont Oudenodon.