Finding Time
Geological time: Eras and Periods
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CAINOZIOC
CAMBRIAN
CARBONIFEROUS
CRETACEOUS
DEVONIAN
JURASSIC
MESOZIOC
ORDOVICIAN
PALAEOZIOC
PERMIAN
PRECAMBRIAN
QUATERNARY
SILURIAN
TERTIARY
TRIASSIC
| X | Y | P | E | R | M | I | A | N | O | K | E | B | W | Q |
| H | T | X | K | S | U | O | E | C | A | T | E | R | C | X |
| A | A | C | O | I | Z | O | E | A | L | A | P | A | A | Z |
| B | M | H | W | S | M | P | C | F | I | G | R | U | I | D |
| F | W | T | E | R | T | I | A | R | Y | B | E | S | N | C |
| N | A | I | C | I | V | O | D | R | O | C | C | I | O | O |
| K | P | T | J | N | K | E | O | N | O | I | A | L | Z | I |
| D | S | O | T | W | V | B | I | I | S | G | M | U | I | Z |
| H | T | I | P | O | G | F | C | S | Q | W | B | R | O | O |
| I | E | S | N | N | E | J | A | U | G | W | R | I | C | S |
| V | X | I | F | R | C | I | W | A | I | Z | I | A | F | E |
| R | A | N | O | F | R | C | L | G | Y | V | A | N | P | M |
| N | Q | U | A | T | E | R | N | A | R | Y | N | X | O | G |
| I | S | J | U | R | A | S | S | I | C | J | V | C | R | A |
| F | J | A | N | K | F | O | Y | B | N | Z | S | J | W | D |
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