Respuesta :

Answer:

Pecten is a marine bivalve molluscs that appears from cretaceous period to Quaternary period.

Explanation:

  • They appears during Cretaceous period and Quaternary period which ranges from 70.6 to 0.0 million years old.
  • The bivalve shells don't really do any harm to the environment.
  • The color of bivalves are creamy white to yellow.

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