Bivalvia Fossil Value Guide

This Cretaceous Period Bivalvia fossil represents a well-preserved specimen of a marine mollusk from an ancient seabed, likely sourced from North America. As a tangible link to a geological era over 66 million years ago, its distinct hinged shell structure makes it a prized piece for evolutionary study and natural history enthusiasts.

What Is Bivalvia Fossil Worth?

The typical price range for Bivalvia Fossil is $75 - $120 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

• The clarity and preservation of the fine surface details and ribbing on the fossilized shell.
• The overall size and structural integrity of the specimen, with values typically ranging from $75 to $120.
• The degree of separation from the surrounding matrix or host rock, which enhances display quality.
• The absence of significant fractures or modern repairs to the fossilized material.

How to Identify Bivalvia Fossil?

• Examine the specimen for the characteristic two-part hinged shell symmetry typical of ancient clams and oysters.
• Look for distinct growth lines and surface ribbing preserved in the fossilized sediment and rock.
• Verify the mineralization consistency, which should show integrated sediment typical of Cretaceous seabed deposits.
• Check for the presence of the umbo, the prominent beak-like protrusion near the hinge of the shell.

History of Bivalvia Fossil

Bivalves are a class of marine and freshwater mollusks that have two shells hinged together, like clams, oysters, and mussels. Their fossil record extends back to the Cambrian period, over 500 million years ago. They have adapted to various aquatic environments, evolving into a diverse group of filter feeders, borers, and even some predatory forms. This particular fossil provides a tangible link to a past geological era.