|Description||Cast of Macoma nasuta, bent-nosed 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. Specimen is a casting of two Macoma nasuta fossil in sediment. Growth lines are visible, highlighted by lighter colored sediment. Overall hue is reddish-brown, indicating the likely presence of iron oxide.|
|Object Name||Shell, Animal|
|Collection||3D - Paleontology|
|Title||Cast of Macoma nasuta, Bent-nosed Clam Fossil, 1.5-.75 Ma|
|Date||1.5 - .75 Ma|
|Order||Veneroida (bivalve order)|
|Family||Tellinidae (Bivalve molluscs)|
|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.
Macoma nasuta (Common name: Bent-nosed Clam) still thrives in the Bay Area.
|Dimensions||H-1 W-3.375 D-2.375 inches|
South San Francisco