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- 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:
- 1-212319
- 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:
- 1-213110
- 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:
- 1-103482
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-SFr-1, Farallon Islands, San Francisco County
- Collection date:
- May 1949
- Taxon:
- Haliotis
- Museum number:
- 1-211940
- 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:
- 1-93661
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Richard Shutler Jr.
- Collection place:
- CA-Las-86, Lassen County, California
- Collection date:
- January-February 1951
- Taxon:
- Haliotis
- Museum number:
- 1-107348
- 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
- Taxon:
- Haliotis
- Museum number:
- 1-212328
- 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:
- 1-212522
- 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:
- 1-212318
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Yol-13 (Mustang Mound), Yolo County, California
- Collection date:
- 1958
- Taxon:
- Haliotis