Object Record
Images
Metadata
Title |
Achatinoidea sp., Sea Snail Fossil Cast, 1.5-.75 Ma |
Object Name |
Shell, Animal |
Description |
Ammonite sp., Sea Snail Fossil Cast dating from between 251-65million years ago commonly found at low tide in littoral (sandy and muddy bottom) or sub-littoral (open bay, muddy marine) zones. Partial imprint of a fossilized sea snail onto hardened sediment. Reddish brown coloring along the sides of this fossil specimen. Lighter colored patches also appear on the underside and along the sides. |
Date |
251-65 Ma |
Catalog Number |
2014.009.002 |
Dimensions |
H-0.875 W-3.875 D-1.625 inches |
Collection |
3D - Biology |
Kingdom |
Animalia (Animals) |
Phylum |
Mollusca (Molluscs) |
Class |
Cephalopoda (Octopus, squid) |
Order |
Ammonoidea [subclass] (molluscs) |
Genus |
Ammonite |
Species |
sp. |
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 |
USGS Emeritus Charles Powell identified on 04/17/2018. Retired Geologist Ken Lajoie tried to identify on 4/24/2014 but could not identify Genus and species. |
Search Terms |
Fossils Shellfish Merced Formation South San Francisco |
Subjects |
Fossils Snails Marine biology Shells Shellfish |
Credit line |
Courtesy of Marilyn & Robert Moore |