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Neithea (Pecten) Fossil

SITE LOCATION: Coryell County, Texas
TIME PERIOD: Lower Cretacious (100-145 million years ago)
Data: Neithea is an extinct genus of bivalve mollusks that lived from the Early Jurassic to the early Paleocene, with a worldwide distribution. Neithia sp. are inequivalve. That means that the two valves are not the same shape, the right valve being strongly concave and the left valve being flattened or concave. Sculpture consist of alternating strong and weaker radiating ribs.
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Pectinoida
Family: Oxytomidae
Genus: Neithea