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