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