Evolution of birds to create variations on wild species. In some birds this is limited to color variations, while others are bred for larger egg or meat production, for flightlessness or other characteristics. Evolution of birds The evolution of birds began in the Jurassic Period, with the earliest birds derived from a clade of theropoda dinosaurs named Paraves. Birds are categorized as a biological class, Aves. For more than a century, the small theropod dinosaur "Archaeopteryx lithographica" from the Late Jurassic period was considered to have been the earliest bird. Modern phylogenies place birds in the dinosaur clade Theropoda. According to the current
Aathal Dinosaur Museum Dinosaurs, Archaeopteryx, eggs and embryos and footprints, as well as meteorites and minerals of "Siber + Siber". The collection includes 10 skeletons being finds from excavations by the museum's team, 10 further original skeletons from Dino, air and marine saurians, 19 detached skeleton fossil dinosaur replicas as well as 31 life-size dinosaur models and 42 replicas of dinosaurs and dinosaur skulls. In 2012 there were 437 guided tours, of which about three hundred for school classes, and since 1992 about 1,571,012 visitors. The staff of the museum consists of approximately 33 employees, of which six are members of the paleontological-scientific