|Description||Panopea generosa, geoduck clam fossil dating from between 1.5 million years ago to .75 million years ago commonly found at low tide in littoral (sandy and muddy bottom) or sub-littoral (open bay, muddy marine) zones. Partial specimen of a geoduck clam embedded in sediment. Cream-colored shell has visible growth rings. Surrounding sediment is reddish in hue, likely indicating the presence of iron oxide. White shell fragments. likely from another clam, are also visible.|
|Object Name||Shell, Animal|
|Collection||3D - Paleontology|
|Title||Panopea generosa, Geoduck Clam Fossil, 1.5-.75 Ma|
|Date||1.5 - .75 Ma|
|Order||Myoida (Saltwater clams)|
|Family||Hiatellidae (Small saltwater clams)|
|Provenance||Fossils taken from Merced Formation collected at Westborough Boulevard at Highway 280 in the late 1970s or early 1980s. (See Yancey 1978, Fig. 2: Artifacts taken from E Stratified Section/D-5929). Most specimens (especially clams) in this collection are not extinct and can still be found in the Bay Area.|
Retired Geologist Ken Lajoie identified on 4/8/2014.
Panopea generosa (Common name: Geoduck Clam) still thrives in the Bay Area.
|Dimensions||H-0.75 W-1.5 D-0.875 inches|
South San Francisco