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