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