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