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