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
| R | Y | R | A | I | T | R | E | T | F | G | J | Y | T | G |
| U | C | R | E | T | A | C | E | O | U | S | X | J | A | S |
| A | A | A | P | I | Q | U | A | T | E | R | N | A | R | Y |
| C | I | C | R | A | S | I | L | U | R | I | A | N | H | E |
| I | N | I | E | B | L | J | B | Z | E | Q | D | E | Y | J |
| Q | O | S | C | E | O | A | M | G | M | I | P | Z | X | U |
| B | Z | S | A | N | R | N | E | E | H | I | U | V | P | R |
| O | I | A | M | U | D | E | I | O | S | V | S | V | W | A |
| I | O | I | B | B | O | E | I | F | Z | O | D | J | F | S |
| F | C | R | R | W | V | O | V | N | E | I | Z | O | J | S |
| B | Q | T | I | N | I | L | O | O | G | R | O | I | K | I |
| Z | H | H | A | F | C | H | I | T | N | S | O | C | O | C |
| W | H | X | N | Q | I | U | M | D | X | I | T | U | D | C |
| W | B | I | G | Z | A | T | N | C | D | Z | A | R | S | V |
| Z | I | T | C | X | N | P | E | R | M | I | A | N | R | P |
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