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