| Similarity | Rank | |
|---|---|---|
| Devonian | 0.850 | 99765 |
| Triassic | 0.781 | 93483 |
| Cretaceous | 0.762 | 59402 |
| Pleistocene | 0.716 | 71860 |
| Permian | 0.712 | 68603 |
| Fossils | 0.687 | 91035 |
| fossils | 0.656 | 23150 |
| Jurassic | 0.655 | 32117 |
| Limestone | 0.652 | 47555 |
| Holocene | 0.643 | 86928 |
| Sandstone | 0.639 | 72094 |
| Glacial | 0.637 | 92463 |
| Quarry | 0.635 | 39932 |
| extinct | 0.634 | 18328 |
| Ellesmere | 0.631 | 94721 |
| Archaic | 0.630 | 81589 |
| Neolithic | 0.628 | 43645 |
| Laurentian | 0.627 | 99816 |
| Caledonian | 0.626 | 61776 |
| Prehistoric | 0.625 | 79408 |
| Gippsland | 0.623 | 74712 |
| metamorphic | 0.622 | 76409 |
| Tertiary | 0.618 | 58001 |
| Pilbara | 0.618 | 94612 |
| Murchison | 0.617 | 80293 |