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I Have a fossilized Bivalve that I found in Moona Moona Creek. What species is it?
It has a smooth, oval-shaped shell with faint ridges and measures about 5 cm in length.
Based on your description, it is possible that the fossilized bivalve could be of the genus Ostrea or Pinctada, commonly known as oysters or pearl oysters. These species were known to inhabit the area where you found the fossil.