Muzquizopteryx is a genus of pterodactyloid pterosaur (flying reptile) from the Late Cretaceous of what is now Coahuila, Mexico. In the nineties José Martínez Vásquez, a worker at the chalk quarry of El Rosario, uncovered a skeleton of a pterosaur. This he handed to a quarry official, who had it bricked in on the face of an office wall as a decorative piece. After its unique scientific value had been recognised in 2002, the specimen was acquired by the Universidad Nacional Autónoma de México. Subsequently it was studied by a combined team of the University of Karlsruhe and the University of Heidelberg, in this financially supported by the Volkswagen company. The specimen was scientifically reported in 2004.