| A | B |
|---|
| armor | any kind of protective covering |
| encases | covers completely; encloses |
| extinct | no longer existing |
| hideous | very ugly; frightful; horrible |
| plunged | fell or moved suddenly downward or forward |
| serpent | snake; especially a big snake |
| calculations | careful thinking; deliberate plans |
| ichthyosaurus | a large fishlike reptile, now extinct, that live in the sea |
| plesiosaurus | any of several large sea reptiles that lived about 200 million years ago |
