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