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| Keywords: Cosesaurus-insitu.png Cosesaurus aviceps the sole specimen of this genus Although lizard-like in appearance this Middle Triassic fenestrasaur/lizard had certain traits that place it on the lineage of Sharovipteryx Longisquama and pterosaurs Among these traits are an elongated narial opening an antorbital fenestra a very large orbit a spike-like quadratojugal a strap-like scapula a stem-like coracoid an enlarged sternum displaced anteriorly to align with transverse clavicles a pteroid an elongated anterior process of the ilium a sacrum consisting of four vertebrae a prepubis a simple hinge ankle joint without fusion of the astragalus and calcaneum a calcaneum without a heel and an elongated pedal digit 5 plus soft tissue membranes arising from the trailing edges of the limbs and the dorsal margin of the spine and skull No digits were vestigial but manual digit V was reduced Study specimen accessed through the Museu de Geologia in Barcelona Spain David Peters 2011-06-09 Cc-zero Cosesaurus | ||||
