|Description||Clinocardium nuttalli, basket cockle 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. Fossil specimen is scalloped-shaped, pinkish in hue and is rounded at the top. Light brown sediment fills the spaces between ridges that run the length of the shell. Underside surface has large fragment of another species of clam, also pinkish in hue. This clamshell is flatter, with growth rings. Underlying light brown sediment is exposed, embedded with smaller fragments of shell.|
|Object Name||Shell, Animal|
|Collection||3D - Paleontology|
|Title||Clinocardium nuttalli, Basket Cockle Fossil, 1.5-.75 Ma|
|Date||1.5 - .75 Ma|
|Order||Veneroida (bivalve order)|
|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 4/24/2014.
Clinocardium nuttali (Common name: Basket Cockle) still thrives in the Bay Area.
|Dimensions||H-0.75 W-1.75 D-1.5 inches|
South San Francisco