Width 47 mm

Se estima que Helicoprion medía alrededor de 3 a 8 metros de longitud

Its discovery in 1861 revolutionized our understanding of bird evolution and has been the subject of study and fascination among scientists and paleontology enthusiasts for over a century

Height 164 mm

Big John was found on a ranch in Montana

Linhenykus monodactylus sexta_extincion Width 47 mmLinhenykus monodactylus was a small theropod dinosaur that lived in the late Cretaceous period, approximately 84 to 75 million years ago, in what is now Asia. The fossil remains of this dinosaur were discovered in the Wulansuhai Formation near Linhe in Inner Mongolia, China, which explains its name. It was first described in 2011 and is one of the most interesting members of the alvarezsaurid family, a group of small bipedal dinosaurs that specialized