Acmaea tejonensis Gabb, 1869 † accepted as Patelloida tejonensis (Gabb, 1869) † (original description)
Ataphrus Gabb, 1869 † (original description)
Ataphrus crassus Gabb, 1869 † (original description)
Atresius Gabb, 1869 † (original description)
Atresius liratus Gabb, 1869 † (original description)
Callista voyi Gabb, 1866 † accepted as Mactromeris polynyma (W. Stimpson, 1860) (original description)
Cancellaria gracilior P. P. Carpenter, 1869 accepted as Admete gracilior (P. P. Carpenter, 1869) (original description)
Clavella gravida Gabb, 1866 † accepted as Bruclarkia gravida (Gabb, 1866) † (original description)
Clisocolus Gabb, 1869 † (original description)
Clisocolus dubius (Gabb, 1864) † (basis of record)
Conchocele Gabb, 1866 (original description)
Conchocele disjuncta Gabb, 1866 accepted as Conchocele bisecta (Conrad, 1849) (original description)
Cyrena californica Gabb, 1869 † accepted as Corbicula gabbiana J. Henderson, 1920 † (original description)
Diodus Gabb, 1869 † (original description)
Diodus tenuis (Gabb, 1864) † (basis of record)
Granocardium Gabb, 1869 † (original description)
Helicaulax bicarinata Gabb, 1869 † accepted as Tessarolax gabbi Saul & Squires, 2015 † (original description)
Heteroterma Gabb, 1869 † (original description)
Lithasia antiqua Gabb, 1866 † accepted as Pilsbryus occidentalis (J. Hall, 1845) † (original description)
Littorina remondii Gabb, 1866 † (original description)
Loxotrema turrita Gabb, 1868 † accepted as Loxotrema turritum Gabb, 1868 † (redescription)
Lucina (Here) Gabb, 1866 accepted as Here Gabb, 1866 (original description)
Lucina (Here) richtofeni Gabb, 1866 † accepted as Here excavata (P. P. Carpenter, 1857) (original description)
Melania taylori Gabb, 1866 † accepted as Goniobasis taylori (Gabb, 1866) † (original description)
Neithea grandicosta Gabb, 1869 † (original description)
Ostrea cerrosensis Gabb, 1866 † accepted as Undulostrea megodon (Hanley, 1846) accepted as Ostrea megodon Hanley, 1846 (original description)
Pecten cerrosensis Gabb, 1866 † accepted as Lyropecten cerrosensis (Gabb, 1866) † (original description)
Pecten complexicosta Gabb, 1869 † accepted as Lyriochlamys complexicosta (Gabb, 1869) † (original description)
Pecten interradiatus Gabb, 1869 † accepted as Propeamussium interradiatum (Gabb, 1869) † (original description)
Pecten martinezensis Gabb, 1869 † accepted as Cyclopecten martinezensis (Gabb, 1869) † (original description)
Pecten peckhami Gabb, 1869 † accepted as Delectopecten peckhami (Gabb, 1869) † (original description)
Pecten veatchii Gabb, 1866 † accepted as Nodipecten veatchii (Gabb, 1866) † (original description)
Pleurotoma voyi Gabb, 1869 † accepted as Antiplanes voyi (Gabb, 1869) † (original description)
Pseudocardium Gabb, 1866 † (original description)
Saxidomus gibbosus Gabb, 1869 accepted as Compsomyax subdiaphana (P. P. Carpenter, 1864) (original description)
Schizodesma abscissa Gabb, 1866 † accepted as Stereomactra abscissa (Gabb, 1866) † (original description)
Siliquaria edentula Gabb, 1869 † accepted as Gari fucata (Hinds, 1845) (original description)
Trigonia aequicostata Gabb, 1869 † (original description)
Triptera clavata Gabb, 1866 † accepted as Vaginella clavata (Gabb, 1866) † (original description)
Trophon squamulifer P. P. Carpenter, 1869 † accepted as Paciocinebrina squamulifera (P. P. Carpenter, 1869)  † (original description)
Turritella martinezensis Gabb, 1869 † accepted as Mesalia martinezensis (Gabb, 1869) † (original description)
Turritella robusta Gabb, 1864 † (additional source)
Unio hubbardii Gabb, 1869 † accepted as Elliptio hubbardii (Gabb, 1869) † (original description)
Urosyca Gabb, 1869 † (original description)
Urosyca caudata Gabb, 1869 † (original description)

Baja California for Pecten cerrosensis Gabb, 1866 † 
Baja California for Pecten veatchii Gabb, 1866 † 
British Columbia for Unio hubbardii Gabb, 1869 † 
California for Acmaea tejonensis Gabb, 1869 † 
California for Ataphrus crassus Gabb, 1869 † 
California for Atresius liratus Gabb, 1869 † 
California for Callista voyi Gabb, 1866 † 
California for Cyrena californica Gabb, 1869 † 
California for Loxotrema turrita Gabb, 1868 † 
California for Lucina (Here) richtofeni Gabb, 1866 † 
California for Neithea grandicosta Gabb, 1869 † 
California for Pecten complexicosta Gabb, 1869 † 
California for Pecten interradiatus Gabb, 1869 † 
California for Pecten martinezensis Gabb, 1869 † 
California for Pecten peckhami Gabb, 1869 † 
California for Trophon squamulifer P. P. Carpenter, 1869 † 
California for Urosyca caudata Gabb, 1869 † 

 Type locality

 for Cyrena californica Gabb, 1869 †

"Near the east end of Kirker's Pass", California; Pliocene [details]

 Type locality

 for Loxotrema turrita Gabb, 1868 †

Ten miles west of Griswold's, between San Juan and New Idria, California, United States [details]

 Type locality

 for Unio hubbardii Gabb, 1869 †

"From the Nanaimo Coal Mine, Vancouver Island", British Columbia, Canada; Chico Fm., Campanian, Late Cretaceous [details]