The Paleobiology Database records no known occurrences of Precambrian fossils in Washington.

• † Alternifenestella
  • † Alternifenestella vagrantia – type locality for species
• † Coeloclemis
  • † Coeloclemis urhausenii – type locality for species
• † Dybowskiella
• † Dyscritella
  • † Dyscritella iwaizakiensis
• † Dyscritellina
• † Fistulamina – tentative report
• † Fistulipora
• † Fistuliramus
  • † Fistuliramus pacificus – type locality for species
• † Hayasakapora
  • † Hayasakapora erectoradiata – or unidentified comparable form
• † Hyolithellus

• 

  † Kutorgina
• † Mackinneyella
  • † Mackinneyella stylettia – type locality for species
• † Meekoporella
  • † Meekoporella inflecta – type locality for species
• † Micromitra
• † Nematopora
• † Neoeridotrypella
  • † Neoeridotrypella missionensis – type locality for species

• 

  † Nevadia
• † Pamirella
  • † Pamirella oculus – type locality for species
• † Parapolypora
• † Pinegopora
  • † Pinegopora petita – type locality for species
• † Polypora
  • † Polypora arbusca – type locality for species
• † Polyporella
• † Pseudobatostomella
• † Rhombopora – tentative report
• † Rhombotrypella
  • † Rhombotrypella kettlensis – type locality for species
• † Sakagamiina – type locality for genus
  • † Sakagamiina easternensis – type locality for species
• † Stenopora
• † Streblotrypa – tentative report
• † Tabulipora
  • † Tabulipora colvillensis – type locality for species
• † Wjatkella
  • † Wjatkella nanea – type locality for species

• † Anchura
  • † Anchura falciformis
• † Canadoceras
  • † Canadoceras newberryanum
  • † Canadoceras sp.
• † Desmophyllites
  • † Desmophyllites diphylloides
• † Dieneroceras
  • † Dieneroceras dieneri – or unidentified comparable form
• † Epigondolella
  • † Epigondolella abneptis
• † Fenestracarpa – type locality for genus ^[1]
  • † Fenestracarpa washingtonensis – type locality for species ^[1]
• † Gaudryceras
  • † Gaudryceras denmanense – or unidentified comparable form
• † Homolsomites
  • † Homolsomites mutabilis
• † Hoplitoplacenticeras
  • † Hoplitoplacenticeras sp.

• 

  † Inoceramus
  • † Inoceramus subundatus
  • † Inoceramus vancouverensis
• † Juvenites
  • † Juvenites septentrionalis – or unidentified comparable form
• † Neophylloceras
  • † Neophylloceras ramosum – or unidentified comparable form
• † Olcostephanus
  • † Olcostephanus pecki – or unidentified comparable form
• † Owenites
  • † Owenites koeneni

• 

  † Pachydiscus
  • † Pachydiscus buckhami
• Palaeocypraea
  • † Palaeocypraea suciensis – type locality for species
• † Pentzia
  • † Pentzia hilgardi
• † Perissitys
  • † Perissitys brevirostris
• † Pseudocymia – tentative report
  • † Pseudocymia cahalli
• † Pseudoxybeloceras
  • † Pseudoxybeloceras lineatum – or unidentified comparable form
• † Sucia – type locality for genus
  • † Sucia suavis – type locality for species

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.