| Answer | Crossword Clue |
|---|---|
| microfossils | MICROFOSSIL, a very small fossil |
| microfossil | a very small fossil |
| archaeopteryxes | The oldest known fossil bird, of the late Jurassic period. It had feathers, wings, and hollow bones like a bird, but teeth, a bony tail, and legs like a small coelurosaur dinosaur |
| archaeopteryx | The oldest known fossil bird, of the late Jurassic period. It had feathers, wings, and hollow bones like a bird, but teeth, a bony tail, and legs like a small coelurosaur dinosaur |
