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