Acmaea simplex Dickerson, 1917 † (original description)
Actaeon parvum Dickerson, 1917 † (original description)
Arca washingtoniana Dickerson, 1917 † (original description)
Astarte perrini Dickerson, 1917 † (original description)
Barbatia gabbi Dickerson, 1917 † (original description)
Cardita (Carditamera) weaveri Dickerson, 1917 † (original description)
Cerithiopsis howardi Dickerson, 1917 † (original description)
Chama pacifica Dickerson, 1917 † (original description)
Conus ruckmani Dickerson, 1917 † (original description)
Corbula cowlitzensis Dickerson, 1917 † (original description)
Diplodonta dalli Dickerson, 1917 † (original description)
Epitonium merriami Dickerson, 1917 † (original description)
Eulima clarki Dickerson, 1917 † (original description)
Exilia weaveri Dickerson, 1917 † (original description)
Fasciolaria gabbi Dickerson, 1917 † (original description)
Fusinus gesteri Dickerson, 1917 † (original description)
Galeodea dalli Dickerson, 1917 † accepted as Echinophoria dalli (Dickerson, 1917) † (original description)
Glycimeris andersoni Dickerson, 1917 † (original description)
Hipponyx arnoldi Dickerson, 1917 † (original description)
Hipponyx ornata Dickerson, 1917 † (original description)
Leda merriami Dickerson, 1917 † (original description)
Lima bella Dickerson, 1917 † (original description)
Littorina oligocenica Dickerson, 1917 † (original description)
Marginella pacifica Dickerson, 1917 † (original description)
Molopophorus stephensoni Dickerson, 1917 † (original description)
Murex vaughani Dickerson, 1917 † (original description)
Neverita nomlandi Dickerson, 1917 † (original description)
Patella subquadrata Dickerson, 1917 † (original description)
Pitaria clarki Dickerson, 1917 † (original description)
Psammobia martini Dickerson, 1917 † (original description)
Saxicava arnoldi Dickerson, 1917 † (original description)
Semele reagani Dickerson, 1917 † (original description)
Seraphs andersoni Dickerson, 1917 † (original description)
Spisula packardi Dickerson, 1917 † (original description)
Strepsidura packi Dickerson, 1917 † (original description)
Triforis martini Dickerson, 1917 † (original description)

Washington for Acmaea simplex Dickerson, 1917 † 
Washington for Actaeon parvum Dickerson, 1917 † 
Washington for Arca washingtoniana Dickerson, 1917 † 
Washington for Astarte perrini Dickerson, 1917 † 
Washington for Barbatia gabbi Dickerson, 1917 † 
Washington for Cardita (Carditamera) weaveri Dickerson, 1917 † 
Washington for Cerithiopsis howardi Dickerson, 1917 † 
Washington for Chama pacifica Dickerson, 1917 † 
Washington for Conus ruckmani Dickerson, 1917 † 
Washington for Corbula cowlitzensis Dickerson, 1917 † 
Washington for Diplodonta dalli Dickerson, 1917 † 
Washington for Epitonium merriami Dickerson, 1917 † 
Washington for Eulima clarki Dickerson, 1917 † 
Washington for Exilia weaveri Dickerson, 1917 † 
Washington for Fasciolaria gabbi Dickerson, 1917 † 
Washington for Fusinus gesteri Dickerson, 1917 † 
Washington for Galeodea dalli Dickerson, 1917 † 
Washington for Glycimeris andersoni Dickerson, 1917 † 
Washington for Hipponyx arnoldi Dickerson, 1917 † 
Washington for Hipponyx ornata Dickerson, 1917 † 
Washington for Leda merriami Dickerson, 1917 † 
Washington for Lima bella Dickerson, 1917 † 
Washington for Littorina oligocenica Dickerson, 1917 † 
Washington for Marginella pacifica Dickerson, 1917 † 
Washington for Molopophorus stephensoni Dickerson, 1917 † 
Washington for Murex vaughani Dickerson, 1917 † 
Washington for Neverita nomlandi Dickerson, 1917 † 
Washington for Patella subquadrata Dickerson, 1917 † 
Washington for Pitaria clarki Dickerson, 1917 † 
Washington for Psammobia martini Dickerson, 1917 † 
Washington for Saxicava arnoldi Dickerson, 1917 † 
Washington for Semele reagani Dickerson, 1917 † 
Washington for Seraphs andersoni Dickerson, 1917 † 
Washington for Spisula packardi Dickerson, 1917 † 
Washington for Strepsidura packi Dickerson, 1917 † 
Washington for Triforis martini Dickerson, 1917 †