page_title: List of the Cenozoic life of Washington (state)
section_title: A
hierarchical_section_title: List of the Cenozoic life of Washington (state) / A
caption_attribution_description: English: A 10cm long specimen of Amyzon aggregatum, 49 million years old, Klondike Mountain Formation, Republic, Washington. Stonerose Interpretive Center Collections# SR 87-33-04.
context_page_description: This list of the Cenozoic life of Washington contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Washington and are between 66 million and 10,000 years of age.
context_section_description: Abdiunguis
  Abies
   Abies milleri - type locality for the species
  Acanthocardia
  †Acanthocardia brewerii
  Acer
  †Acer arcticum
  †Acer beckianum - type locality for species
  †Acer bendirei
  †Acer browni
   †Acer chaneyi
  †Acer hillsi - type locality for species
  †Acer knolli - type locality for species
  †Acer latahense - type locality for species
  †Acer medianum
  †Acer niklasi
  †Acer olearyi - type locality for species
  †Acer puratanum - type locality for species
  †Acer republicense - type locality for species
  †Acer spitzi - type locality for species
  †Acer stonebergae
  †Acer tigilense
  †Acer toradense - type locality for species
  †Acer washingtonense - type locality for species
  †Acer wehri - type locality for the species
  †Acer whitebirdense
  Acharax
  †Acharax dalli
  †Acherontemys – type locality for genus
  †Acherontemys heckmani – type locality for species
  Acidota
  Acidota crenata
  Acila
  †Acila conradi
  †Acila decisa
  †Acila gettysburgensis
  †Acila pugetensis
  Aclypea
  †Aclypea bituberosa
  Acrulia
  †Acrulia tumidula
  Actium
  †Acutostrea
  †Acutostrea idriaensis
  †Adamsochrysa
  †Adamsochrysa wilsoni – type locality for species
   Aegialia
  †Aegialia cylindrica
  †Aegialia lacustris
  Aesculus
  †Aesculus hankinsii - type locality for species
  Aforia
  †Aforia clallamensis
  Agabus
  Agathidium
  †Aglyptorhynchus
  †Aglyptorhynchus columbianus – type locality for species
  Agonum
  †Agonum cupreum
  †Agonum ferruginosum
   †Ainigmapsychops – type locality for genus
  †Ainigmapsychops inexspectatus – type locality for species
  †Alilepus
  †Alilepus vagus
  †Alilepus wilsoni – or unidentified comparable form
  †Allantodiopsis
  †Allantodiopsis erosa
  †Allantodiopsis pugetensis
  †Allantodiopsis undescribed species
   †Allodesmus
  †Allophylus
  †Allophylus duktothensis – or unidentified comparable form
  †Allorapisma – type locality for genus
  †Allorapisma chuorum – type locality for species
  Alniphagus
  †Alniphagus aspericollis
  Alnus
  †Alnus carpinoides
  †Alnus kluckingi - type locality for species
  †Alnus operia
   †Alnus parvifolia - type locality for species 
  Altica
  †Altica lazulina – or unidentified comparable form
  Amaea
  †Amaea olympicensis
  †Amaea washingtonensis
  Amara
  †Amara conflata – or unidentified comparable form
  Amauropsis
  †Amauropsis blakeleyensis
  Amia
  †Amia hesperia
  Ammospermophilus
  †Ammospermophilus hanfordi
  Amphimorphina
  †Amphimorphina californica
  Amphistegina
   †Amyzon
  †Amyzon aggregatum
  †Anacardites
  †Anacardites franklinensis – type locality for species
  Anadara
  †Anadara devincta
  †Anadara lakei – or unidentified related form
  †Anamirta
  †Anamirta milleri – or unidentified comparable form
  Ancistrolepis
  †Ancistrolepis rearensis
  †Anechinocardium
  †Anechinocardium lorenzanum
  †Anechinocardium weaveri – or unidentified comparable form
  Anemia
  †Anemia elongata
  Anthrax
  †Anthrax dentoni – type locality for species
  †Aperiploma
  †Aperiploma bainbridgensis
  †Aphelops
  †Aphelops mutilus – or unidentified comparable form
  Aphodius
  Aphrocallistes
  †Aphrocallistes polytretos – or unidentified comparable form
  Apion
  †Aporolepas
  †Arceuthobium
  †Archarax
  †Archarax dalli
  Arcoscalpellum
  †Arcoscalpellum knapptonensis – type locality for species
  †Arcoscalpellum raricostatum
  †Arctostaphylos
  †Arctostaphylos uvaursi
   Argobuccinum
  †Argobuccinum goodspeedi
  †Argobuccinum mathewsonii
  †Argobuccinum washingtoniana
  Arpedium
  †Arpedium cribratum
  Artemisia
  Artochia
  †Artochia productifrons
  Asiorestia
  †Asiorestia pallida
  †Asplenium
  †Asplenium delicata – or unidentified comparable form
  Astrangia
  †Astrangia clarki – type locality for species
  Astreopora
  †Astreopora duwamishensis – type locality for species
  †Astreopora sanjuanensis – type locality for species
  Athyrium
  †Athyrium gracilium - type locality for species
  Atomaria
   †Aturia
  †Aturia alabamensis – or unidentified comparable form
  †Aturia angustata
  †Aturia grandior – type locality for species
  Auleutes
  †Auleutes epilobii – or unidentified comparable form
  †Azolla
  †Azolla primaeva
caption: Fossilized skeleton found in Republic belonging to the Eocene-Oligocene sucker fish Amyzon aggregatum
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