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