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Object Record

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Catalog Number 2014.009.009
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 brownish gray in color, with a thick white band along the front edge of its shell. White area bleeds towards the back of shell, highlighting ribs that extend the length of the shell. Small reddish patches on one side of shell likely indicate presence of iron oxide. Underside surface is predominantly grayish brown, with white stripes extending from ligament, along left and right edges of shell.
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 W-1.25 D-1.25 inches
Search Terms Fossils
Merced Formation
South San Francisco
Subjects Fossils
Marine biology