---
title: Ornithomimus - Noi Dinosauri
description: Entdecken Sie den Ornithomimus, den Straußen-Dinosaurier! Erfahren Sie alles über seine Federn, 70 km/h Geschwindigkeit und seinen zahnlosen Schnabel.
author: Angelo Denitto
---

![](https://www.noidinosauri.it/images/encyclopedia/dinosaurs/ornithomimus/ornitomimus.webp)

![](https://www.noidinosauri.it/images/encyclopedia/dinosaurs/ornithomimus/ornitomimus.webp)

## Curiosity - Did you know?

### The sprinter's bare legs



A **2015** study on a pristine fossil exposed a critical biomechanical hack. The lower legs of the ***Ornithomimus***—from the knee down—were **completely featherless**. Bare, scaly skin covered the bone. This was a targeted evolutionary adaptation. The bare legs functioned as **thermal radiators**. They dumped the massive heat load generated by the leg muscles during a sprint, preventing fatal heatstroke. It is the exact physiological solution utilized by modern ostriches traversing the African savanna.

IMPORTANT - Some statements regarding behavior, coloration, and sensory abilities reflect ongoing scientific hypotheses, not established certainties.