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Object Record

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Catalog Number 2014.009.013
Description Clinocardium nuttali, 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 stone-colored, with some patches of white and some areas with a reddish tinge (likely indicating the presence of iron oxide). Faint ridges are visible on one side, running the length of the shell. Underside surface is irregularly shaped, with a partial shell cast and other shell fragments throughout. Some reddish patches are visible.
Object Name Shell, Animal
Collection 3D - Paleontology
Title Clinocardium nuttalli, Basket Cockle Fossil, 1.5-.75 Ma
Date 1.5 - .75 Ma
Kingdom Animalia (Animals)
Phylum Mollusca (Molluscs)
Class Bivalvia (Bivalves)
Order Veneroida (bivalve order)
Family Cardiidae (Cockles)
Genus Clinocardium
Species nuttalli
Inscription Text none
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.
Notes Retired Geologist Ken Lajoie identified on 4/24/2014.
Clinocardium nuttali (Common name: Basket Cockle) still thrives in the Bay Area.
Dimensions H-1.25 W-2.5 D-2.75 inches
Search Terms Fossils
Shellfish
Merced Formation
South San Francisco
Subjects Fossils
Shells
Shellfish
Marine biology