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