EVMS003 Yinlong/Styracosaurus

EVOLVEMS are actually TWO toys in one package! Unzip & flip inside out to reval the next step in evolution! Fun and educational!

The North American plains are famous for their rich fossil finds of great horned dinosaurs such as Styracosaurus and Triceratops. The origins of these dominant herbivores was unknown until recent discoveries in northern China of early ceratopsian ancestors, like Yinlong.

Yinlong
Year : 160 million years ago
Era : Late Jurassic
Classification : Ceratopsia
Habitat : Fossils found in western China
Size : 5ft/1.5m
Diet : Herbivore
Yinlong, which means "Hidden Dragon", is the oldest and most primitive ceratopsian known to science. A single complete skeleton was discovered in 2004. Based on the rock layer, it lived in the Late Jurassic making it the only ceratopsian known to have lived during that period. All other ceratopsian discoveries have dated to the later Cretaceous period. Yinlong's beak and skull ornamentation identify it as a small early ancestor of the more well known large ceratopsians such as triceratops.

Styracosaurus
Year : 75 million years ago
Era : Late Cretaceous
Classification : Ceratopsia
Habitat : Fossils found in North America
Weight : 6000lbs / 2700kg
Size : 18ft / 5.5m
Diet : Herbivore
Styracosaurus, which means "Spiked Lizard" was a rhinoceros-like ceratopsian dinosaur. It is recognizable by the large neck frill, decorated by an array of large crown horns and the large horn protruding from the nose. This horn may have reached lengths of up to 2ft / 60cm. There is debate among scientists about the function of the horns and frills. Some suggest that the horns were for combat with predators, while others think that it was for display to attract a mate. The large frill may also have been used for regulating body temperature.