Archeopteryx lithographica is an emblematic species of evolution

making it among the largest invertebrates of the Paleozoic

Isisaurus colberti is the only known species of the extinct Isisaurus ("Indian Statistical Institute lizard") genus of titanosaurian sauropod dinosaur

Hesperonychus era un depredador ágil y activo

Tenía extremidades cortas y fuertes

Stegosaurus stenops Qianzhousaurus Archeopteryx lithographica is an emblematicStegosaurus stenops is one of the best known and most studied species of dinosaurs in the genus Stegosaurus, which lived during the Late Jurassic period, approximately 155 to 150 million years ago. Stegosaurus stenops fossils have been found primarily in North America, especially in the Morrison Formation, which encompasses parts of present day Colorado, Wyoming, and Utah. This herbivorous dinosaur is famous for its distinctive appearance,