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- Museum number:
- 1-148744
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Object status:
- Deaccessioned
- Museum number:
- 1-100616
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Mrn-234, Marin County, California
- Collection date:
- September 1948
- Taxon:
- Clinocardium nuttallii
- Museum number:
- 1-148704
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148723
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148749
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148730
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148747
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148692
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-100598
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Mrn-234, Marin County, California
- Collection date:
- September 1948
- Museum number:
- 1-148694
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148729
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148728
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148736
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148708
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-239002
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Harry Starr Riddell Jr.
- Collection place:
- CA-Sac-21 (Hollister Mound), Sacramento County, California
- Collection date:
- unknown
- Museum number:
- 1-148685
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-237999
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Harry Starr Riddell Jr.
- Collection place:
- CA-Sac-56 (Mosher site), Sacramento County, California
- Collection date:
- 1951
- Object status:
- Deaccessioned
- Museum number:
- 1-100613
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Mrn-234, Marin County, California
- Collection date:
- September 1948
- Museum number:
- 1-197108
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148735
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-202332
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell, James Allan Bennyhoff, and Richard Shutler Jr.
- Collection place:
- CA-Las-90 (Amedee Cave), Lassen County, California
- Collection date:
- July 1951
- Object status:
- Deaccessioned
- Museum number:
- 1-100628
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Mrn-234, Marin County, California
- Collection date:
- September 1948
- Museum number:
- 1-148701
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148715
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-100624
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Mrn-234, Marin County, California
- Collection date:
- September 1948
- Museum number:
- 1-93587
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Richard Shutler Jr.
- Collection place:
- CA-Las-45, Lassen County, California
- Museum number:
- 1-148721
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-202339
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell, James Allan Bennyhoff, and Richard Shutler Jr.
- Collection place:
- CA-Las-90 (Amedee Cave), Lassen County, California
- Collection date:
- July 1951
- Museum number:
- 1-202846
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-13 (Horse Lake site), Horse Lake, Lassen County
- Collection date:
- 1938
- Museum number:
- 1-202105
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Harry Starr Riddell Sr.
- Collection place:
- CA-Sac-29 (King Brown Mound), Sacramento, Sacramento County
- Collection date:
- 1940
- Museum number:
- 1-148699
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-115625
- 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
- Museum number:
- 1-202329
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell, James Allan Bennyhoff, and Richard Shutler Jr.
- Collection place:
- CA-Las-90 (Amedee Cave), Lassen County, California
- Collection date:
- July 1951
- Museum number:
- 1-148720
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148695
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-100600
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Mrn-234, Marin County, California
- Collection date:
- September 1948
- Museum number:
- 1-148738
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148718
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-100612
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Mrn-234, Marin County, California
- Collection date:
- September 1948
- 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
- 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
- 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:
- 1-98234
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell, Harry Starr Riddell Sr., and Kitty Joaquin
- Collection place:
- CA-Sac-28 (Strawberry Mound), Sacramento, Sacramento County
- Collection date:
- August 1940
- Object status:
- Deaccessioned
- Museum number:
- 1-100634
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Mrn-234, Marin County, California
- Collection date:
- September 1948
- Taxon:
- Haliotis rufescens (red abalone)
- Museum number:
- 1-197104
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148705
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148691
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- Museum number:
- 1-148690
- Object class:
- Shell samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-7, Karlo area, Lassen County
- Collection date:
- 1955
- 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