Keywords: FMIB 49919 Comparison of series of shells from Goat Island (left), Dumbarton (center), and Crockett (right), illustrating range of.jpeg check categories 17 September 2015 3 Comparison of series of shells from Goat Island left Dumbarton center and Crockett right illustrating range of variation at each of these points Differences in absolute size may be disregarded as in this case no selection has been made for age Subject Teredo navalis Tag Mollusks 1923 Cite book Report on the San Francisco Bay Marine Piling Survey San Francisco Bay Marine Piling Committee San Francisco CA San Francisco Bay Marine Piling Committee 1923 3rd Appendix I Plate 4 San Francisco Bay Marine Piling Committee PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 49919 Images from the Freshwater and Marine Image Bank to check San Francisco Bay Marine Piling Committee Teredo navalis Mollusca |