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