Mei Facts
| Diet | Carnivore |
| Height | 0.15m |
| Length | 0.53m |
| Weight | 600 g |
| Environment | Land |
| Era | Cretaceous |
| Period | Early Cretaceous |
| Type | Theropod |
| Location | China |

| Diet | Carnivore |
| Height | 0.15m |
| Length | 0.53m |
| Weight | 600 g |
| Environment | Land |
| Era | Cretaceous |
| Period | Early Cretaceous |
| Type | Theropod |
| Location | China |
Mei was a remarkable small theropod dinosaur that lived approximately 126 million years ago during the Early Cretaceous period in what is now northeastern China. This tiny predator measured just 53 centimetres long and weighed only about 600 grams, making it one of the smallest dinosaurs ever discovered. Despite its diminutive size, Mei was a sophisticated hunter with large eyes and a relatively large brain, typical characteristics of its lineage.
The most extraordinary aspect of Mei is how it was preserved. The single known fossil specimen was found in a remarkable sleeping position, with its head tucked under one arm and its tail curled around its body - exactly like modern birds sleep today. This unprecedented preservation occurred when the dinosaur was likely overcome by volcanic gases and ash, capturing it in its final moments of rest.
As a theropod, Mei was built for an active lifestyle. It had long, slender legs adapted for running and pursuing small prey such as insects, early mammals, and possibly small lizards. Its large eyes suggest it may have been active during dawn and dusk hours when many small creatures would have been moving about. The bird-like sleeping posture provides compelling evidence for the evolutionary link between dinosaurs and modern birds.
Mei lived in the lush forests of Early Cretaceous China, sharing its environment with many other feathered dinosaurs. The excellent preservation conditions in this region have provided palaeontologists with unprecedented insights into dinosaur behaviour and daily life.
Mei was distinguished by its extremely small size at just 53 centimetres long, proportionally large eyes for night or twilight hunting, and long slender legs built for speed. Its most famous feature is the remarkable preservation showing it in a bird-like sleeping position with its head tucked under one arm.
Mei exhibited bird-like sleeping behaviour, tucking its head under one arm whilst resting, as dramatically preserved in the fossil. Its large eyes suggest it was likely most active during twilight hours, and its build indicates it was an agile runner capable of pursuing small, quick prey through dense forest undergrowth.
Mei was first described by Xu Xing and Mark Norell in 2004. The original fossils were discovered at Liaoning Province, China.