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