Length 408 mm

with the first pairs longer and slightly curved

siendo su rasgo más característico la vela o aleta dorsal que podía alcanzar los 2 metros y pudiera haberle servido de regulador térmico

Approximate measurements of Eohippus:

considered a crucial link between dinosaurs and modern birds

Altirhinus kurzanovi Machairoceratops Length 408 mmAltirhinus kurzanovi was an ornithopod dinosaur from the Early Cretaceous, about 120 million years ago, whose fossils have been found in the Khuren Dukh Formation (Mongolia). Its name means "high nose," alluding to its characteristic prominent, arched nasal protuberance. This trait is thought to have been related to vocal resonance, intraspecific recognition, or even visual display. Biometrically, Altirhinus reached between 6 and 8 meters in length ,