Fossil study helps pinpoint extinction risks for ocean animals: When it comes to ocean extinctions, range size matters most

EarthzineBiodiversity, Oceans

venericardia densata, extinct species of clam. The location is Claiborne Bluff on the Alabama River, Monroe County, Alabama. The age was middle Eocene (48.6 - 37.2 million years ago) Lisbon Formation. (Credit: Photo by Paul Harnik)