Crenomytilus mathewsonii (Gabb, 1866)
Mathewson’s mussel
Geological range: Middle Miocene
Geographic distribution: Oregon, California (Jewett Sand, Temblor Formation, Topanga Formation)
Mathewson’s mussel
Geological range: Middle Miocene
Geographic distribution: Oregon, California (Jewett Sand, Temblor Formation, Topanga Formation)