If you found a fossil like the one pictured above in an open grassy field, what could you infer about this particular part of Earth during much earlier times?

Responses
A Earth's earlier environment in this particular area was covered with water.Earth's earlier environment in this particular area was covered with water.
B Earth's earlier environment in this particular area was most likely a deep canyon.Earth's earlier environment in this particular area was most likely a deep canyon.
C Earth's earlier environment in this particular area was frozen like the ground coverings of a tundra.Earth's earlier environment in this particular area was frozen like the ground coverings of a tundra.
D Earth's earlier environment in this particular area was also similar to the open, grassy field you see today.

A Earth's earlier environment in this particular area was covered with water.