Crossword puzzle clue "common fossil in paleozoic rocks"

Here are the possible solutions for common fossil in paleozoic rocks clue

Answer
Clue
Relevancy
trilobite
Clue
Common fossil in Paleozoic rocks
shales
Clue
Fossil-yielding rocks
Fossil rocks
ice
Clue
The rocks in "on the rocks"
Definition
to cover with frozen water
asoldasthehills
Clue
Patently Paleozoic?
era
Clue
Paleozoic, for one
Paleozoic, e.g.
Paleozoic or Mesozoic
Definition
a main division of geological time

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