| Answer | Crossword Clue |
|---|---|
| biostrome | a rock layer consisting of a deposit of organic material such as fossils |
| Answer | Crossword Clue |
|---|---|
| biostrome | a rock layer consisting of a deposit of organic material such as fossils |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.