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- Museum number:
- 1-107308
- Object class:
- Shell samples
- Collector:
- Arnold R. Pilling, Francis A. Riddell, and Franklin Fenenga
- Collection place:
- CA-Son-299, Bodega Harbor, Sonoma County
- Collection date:
- July 1949
- Museum number:
- 1-213479
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Yol-13 (Mustang Mound), Yolo County, California
- Collection date:
- 1958
- Museum number:
- 1-107330
- Object class:
- Shell samples
- Collector:
- Arnold R. Pilling, Francis A. Riddell, and Franklin Fenenga
- Collection place:
- CA-Son-299, Bodega Harbor, Sonoma County
- Collection date:
- July 1949
- Museum number:
- 1-100619
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Mrn-234, Marin County, California
- Collection date:
- September 1948
- Object status:
- Deaccessioned
- Museum number:
- 1-106106
- Object class:
- Shell samples
- Collector:
- Arnold R. Pilling, Francis A. Riddell, and Franklin Fenenga
- Collection place:
- CA-Son-299, Bodega Harbor, Sonoma County
- Collection date:
- June-July 1949
- Taxon:
- Leukoma staminea
- Museum number:
- 2-36330
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- Daxatkanada, Sitka Borough, Alaska
- Museum number:
- 1-148713
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-115627
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and William S. Evans Jr.
- Collection place:
- CA-Las-1, Lassen County, California
- Collection date:
- February 1949
- Object status:
- Deaccessioned
- Museum number:
- 1-142753.2
- Object class:
- Shell samples
- Collector:
- Albert B. Elsasser and Francis A. Riddell
- Collection place:
- CA-Mrn-17 (De Silva Island Mound), Marin County, California
- Collection date:
- November 4, 1955
- Museum number:
- 1-105139
- Object class:
- Shell samples
- Collector:
- Arnold R. Pilling, Francis A. Riddell, and Franklin Fenenga
- Collection place:
- CA-Son-299, Bodega Harbor, Sonoma County
- Collection date:
- June-July 1949
- Museum number:
- 16-8200
- Object class:
- Shell samples
- Collector:
- Dorothy Menzel and Francis A. Riddell
- Collection place:
- Huaca Blanca, Lambayeque Region, Northern Peru
- Collection date:
- March 3, 1954
- Museum number:
- 1-212514
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Yol-13 (Mustang Mound), Yolo County, California
- Collection date:
- 1958
- Taxon:
- Haliotis
- Museum number:
- 1-197125
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-258565
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Yol-13 (Mustang Mound), Yolo County, California
- Collection date:
- 1958
- Object status:
- Deaccessioned
- Museum number:
- 1-232469.1
- Object class:
- Shell samples
- Collector:
- Cherie N. Gregoire, Francis A. Riddell, and James Allan Bennyhoff
- Collection place:
- CA-Mrn-76, Larkspur, Marin County
- Collection date:
- unknown
- Object status:
- Deaccessioned
- Museum number:
- 1-105157
- Object class:
- Shell samples
- Collector:
- Arnold R. Pilling, Francis A. Riddell, and Franklin Fenenga
- Collection place:
- CA-Son-299, Bodega Harbor, Sonoma County
- Collection date:
- June-July 1949
- Taxon:
- Olivella biplicata
- Object status:
- Deaccessioned
- Museum number:
- 1-105143
- Object class:
- Shell samples
- Collector:
- Arnold R. Pilling, Francis A. Riddell, and Franklin Fenenga
- Collection place:
- CA-Son-299, Bodega Harbor, Sonoma County
- Collection date:
- June-July 1949
- Taxon:
- Leukoma staminea
- Museum number:
- 1-212319
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Yol-13 (Mustang Mound), Yolo County, California
- Collection date:
- 1958
- Taxon:
- Haliotis
- Object status:
- Deaccessioned
- Museum number:
- 1-106130
- Object class:
- Shell samples
- Collector:
- Arnold R. Pilling, Francis A. Riddell, and Franklin Fenenga
- Collection place:
- CA-Son-299, Bodega Harbor, Sonoma County
- Collection date:
- June-July 1949
- Object status:
- Deaccessioned
- Museum number:
- 1-106133
- Object class:
- Shell samples
- Collector:
- Arnold R. Pilling, Francis A. Riddell, and Franklin Fenenga
- Collection place:
- CA-Son-299, Bodega Harbor, Sonoma County
- Collection date:
- June-July 1949
- Taxon:
- Mytilus californianus