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Collection Tier:
Tier 3

Fossils ➔ Mazonomya mazonensis

Identifier:
2019.1.1692
Description:

A siderite concretion that was split open to reveal an impression of a bivalve.

Mazon Creek, IL is a famous fossil locality containing plants and animals from 309 million years ago. These fossils formed from a large flooding event that rapidly buried organisms, allowing for soft parts to be preserved.

ID confirmed by R. Lee September 19, 2019.

Rights: