Ankylosaurus was a dinosaur that evolved a mass of bone at the end of its tail it was used to smash the legs of predators during a fight. Even the t-rex was wary of this strange dinosaur.
"Ankylosaurus was a bulky, armored herbivore from the late Cretaceous period with a large clubbed tail that could shatter predator's bones."
- Tail Club (Speed):
"A new development that helped herbivores protect themselves, the bony clubbed trail could fend off even large predators."
- Ossification (Payout):
"Many bones throughout the Ankylosaurus' skull and body were fused, which greatly increased their strength and durability. Their name is derived from the medical term ankylosis: the process of fusing bones."
- Quadrupedal (Speed):
"A creature that walks on four legs, with a horizontal posture, is called a quadruped. Many dinosaurs were quadrupedal, including Stegosaurus and Triceratops. A quadrupedal gait gave these dinosaurs increased sturdiness and the ability to carry lots of weight."
- Herbivore (Payout):
"Animals that feed entirely on plant matter are called herbivores. About half of all dinosaurs were herbivores. They had teeth that were specially designed for grinding leaves, twigs, and shoots."
- Cretaceous Age (Discount):
"The Cretaceous (145 MYA—66 MYA) was the last period of the Mesozoic Era. Dinosaurs continued to dominate the Earth. Flowering plants first appeared during this time. This period ended with the Cretaceous-Paleogene Mass Extinction Event, when 75% of all life on Earth went abruptly extinct."
- Hollow Bones (Speed):
"The development of hollow or semi-hollow bones gave some dinosaurs a lighter but stronger skeleton system. This development would later enable them to evolve the ability to fly."
- Herd Behavior (Payout):
"Some dinosaurs concregated in social groups, living in loose family units for defense against predators."
- Feathers (Discount):
"It is still unknown to what extent therapodian dinosaurs were feathered, but evidence exists that shows that at least some of them presented with varying degrees of feathery skin coverings."
- Warm Climate (Payout):
"During the Mesozoic Era, the Earth's temperature was very warm, which led to a great amount of geological and biological transitions. This climate set the stage for the major changes of the era."
- Thick-Skinned (75 Ankylosaurus):
"The armor of the Ankylosaurus was made of knobs and plates of bone that form within the skin, called osteoderms. Osteoderms are seen in some modern animals, including crocodils and armadillos."
- There Is No Dino, Only Zuul (200 Ankylosaurus):
"One species of Ankylosaur has been named "Zuul crurivastator" due to its resemblance to the demon Zuul from the film "Ghostbusters". The second part of the name, crurivastator, means "destroyer of shins," referring to its clubbed tail."
Ankylosaurus is a genus of armored dinosaur. Its fossils have been found in geological formations dating to the very end of the Cretaceous Period, about 68–66 million years ago, in western North America, making it among the last of the non-avian dinosaurs. It was named by Barnum Brown in 1908; the only species in the genus is A. magniventris. The genus name means "fused lizard", and the specific name means "great belly". A handful of specimens have been excavated to date, but a complete skeleton has not been discovered. Though other members of Ankylosauria are represented by more extensive fossil material, Ankylosaurus is often considered the archetypal member of its group, despite having some unusual features.