dinosaur – n. one of many animals that lived on Earth millions of years ago
wingspan – n. the distance from the tip of one wing of a bird to the tip of the other wing
giraffe – n. a very tall African animal that has an extremely long neck and legs
specimen – n. something (such as an animal or plant) collected as an example of a particular kind of thing
fossil – n. something (such as a leaf, skeleton, or footprint) that is from a plant or animal which lived in ancient times and that you can see in some rocks