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