Anthonya W. M. Gabb, 1864 † (original description)
Anthonya cultriformis W. M. Gabb, 1864 † (original description)
Aporrhais angulata Gabb, 1864 † accepted as Anchura angulata (Gabb, 1864) † (original description)
Aporrhais falciformis Gabb, 1864 † accepted as Anchura falciformis (Gabb, 1864) † (original description)
Cardium cooperii Gabb, 1864 † accepted as Nemocardium cooperii (Gabb, 1864) † (original description)
Corbula traskii Gabb, 1864 † accepted as Caryocorbula traskii (Gabb, 1864) † (original description)
Cordiera microptygma Gabb, 1864 † accepted as Exilia microptygma (Gabb, 1864) † (original description)
Cypraea bayerquei Gabb, 1864 † accepted as Eocypraea bayerquei (Gabb, 1864) † (original description)
Cyprinella Gabb, 1864 † accepted as Diodus Gabb, 1869 † (original description)
Cyprinella tenuis Gabb, 1864 † accepted as Diodus tenuis (Gabb, 1864) † (original description)
Emarginula radiata Gabb, 1864 † accepted as Emarginula gabbi G. B. Stewart, 1926 † (original description)
Eriphyla Gabb, 1864 † (original description)
Eriphyla umbonata Gabb, 1864 † (original description)
Fusus (Hemifusus) remondii Gabb, 1864 † accepted as Ficus remondii (Gabb, 1864) † (original description)
Fusus averillii Gabb, 1864 † accepted as Volutoderma averillii (Gabb, 1864) † (original description)
Galerus excentricus Gabb, 1864 † accepted as Calyptraea diegoana (Conrad, 1855) † (original description)
Gyrodes expansus Gabb, 1864 † (original description)
Haydenia Gabb, 1864 † (original description)
Haydenia impressa Gabb, 1864 † (original description)
Loripes dubia Gabb, 1864 † accepted as Clisocolus dubius (Gabb, 1864) † (original description)
Lunatia (Gyrodes) conradiana Gabb, 1864 † accepted as Natica conradiana (Gabb, 1864) † (original description)
Lysis Gabb, 1864 † (original description)
Mactra ashburnerii Gabb, 1864 † accepted as Cymbophora ashburnerii (Gabb, 1864) † (original description)
Megistostoma Gabb, 1864 † (original description)
Megistostoma striata Gabb, 1864 † accepted as Megistostoma gabbiana (Stoliczka, 1868) † (original description)
Monotis subcircularis Gabb, 1864 † accepted as Pacimonotis subcircularis (Gabb, 1864) † (original description)
Morio (Sconsia) tuberculatus Gabb, 1864 † accepted as Galeodea tuberculiformis G. D. Hanna, 1924 † (original description)
Myophoria alta Gabb, 1864 † (original description)
Naticina obliqua Gabb, 1864 † accepted as Sinum obliquum (Gabb, 1864) † (original description)
Neverita secta Gabb, 1864 † accepted as Glossaulax reclusiana (Deshayes, 1839) (original description)
Nucula truncata Gabb, 1864 † accepted as Acila demessa H. J. Finlay, 1927 † (original description)
Pecten californicus Gabb, 1864 † (original description)
Pecten operculiformis Gabb, 1864 † accepted as Syncyclonema operculiformis (Gabb, 1864) † (original description)
Pecten traskii Gabb, 1864 † accepted as Lyriochlamys traskii (Gabb, 1864) † (original description)
Potamides tenuis Gabb, 1864 † (original description)
Straparollus lens Gabb, 1864 † accepted as Polygyroidea lens (Gabb, 1864) † (original description)
Tessarolax Gabb, 1864 † (original description)
Tessarolax distorta Gabb, 1864 † (original description)
Trigonia tryoniana Gabb, 1864 † accepted as Popenoella tryoniana (Gabb, 1864) † (original description)
Tritonium diegoensis Gabb, 1864 † accepted as Buccinofusus diegoensis (Gabb, 1864) † (original description)
Tritonium whitneyi Gabb, 1864 † accepted as Hexaplex whitneyi (Gabb, 1864) † (original description)
Turnus Gabb, 1864 † (original description)
Turnus plenus Gabb, 1864 † (original description)
Turritella robusta Gabb, 1864 † (original description)
Turritella veatchii Gabb, 1864 † accepted as Goniobasis veatchii (Gabb, 1864) † (original description)
Unio penultimus Gabb, 1864 † (original description)

California for Anthonya cultriformis W. M. Gabb, 1864 † 
California for Cypraea bayerquei Gabb, 1864 † 
California for Cyprinella tenuis Gabb, 1864 † 
California for Fusus averillii Gabb, 1864 † 
California for Galerus excentricus Gabb, 1864 † 
California for Haydenia impressa Gabb, 1864 † 
California for Haydenia impressa Gabb, 1864 † 
California for Loripes dubia Gabb, 1864 † 
California for Mactra ashburnerii Gabb, 1864 † 
California for Megistostoma striata Gabb, 1864 † 
California for Naticina obliqua Gabb, 1864 † 
California for Neverita secta Gabb, 1864 † 
California for Nucula truncata Gabb, 1864 † 
California for Pecten californicus Gabb, 1864 † 
California for Pecten operculiformis Gabb, 1864 † 
California for Pecten traskii Gabb, 1864 † 
California for Potamides tenuis Gabb, 1864 † 
California for Straparollus lens Gabb, 1864 † 
California for Tritonium diegoensis Gabb, 1864 † 
California for Tritonium whitneyi Gabb, 1864 † 
California for Turnus plenus Gabb, 1864 † 
California for Turritella robusta Gabb, 1864 † 
California for Turritella veatchii Gabb, 1864 † 
California for Unio penultimus Gabb, 1864 † 

 Type locality

 for Haydenia impressa Gabb, 1864 †

Pentz, Butte County ("Pence's Ranch"), and Tuscan Springs, Tehama County, California, United States; Chico ... [details]

 Type locality

 for Potamides tenuis Gabb, 1864 †

Pentz ("Pence's Ranch, twelve miles north of Oroville, Butte County"), California, United States; Chico Formation, ... [details]

 Type locality

 for Straparollus lens Gabb, 1864 †

"Texas Flat, Placer County", California, United States [details]

 Type locality

 for Turritella veatchii Gabb, 1864 †

Tuscan Springs, Tehama County, California, United States; Chico Formation, Coniacian to Campanian, late Cretaceous [details]

 Type locality

 for Unio penultimus Gabb, 1864 †

"From a bed of fine clay adjoining the 'Peacock', or lower vein of coal, in the Peacock coal-mine, Mount Diablo ... [details]