List of the Mesozoic life of Oregon

This list of the Mesozoic life of Oregon contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Oregon and are between 252.17 and 66 million years of age.

A

 * †Acanthocircus
 * †Acanthocircus carinatus – or unidentified related form
 * †Acanthocircus rotundus – or unidentified related form
 * †Acanthodiscus
 * †Acanthodiscus subradiatus – or unidentified related form
 * Inoceramidae - Inoceramus sulcatus.JPG †[[Actinoceramus]]
 * †Actinoceramus salomoni
 * †Actinoceramus subsulcatus
 * †Actinoceramus sulcatus
 * †Agerchlamys
 * †Agerchlamys boellingi
 * †Alpinophragmium – tentative report
 * †Amblysiphonella
 * †Amblysiphonella steinmanni – or unidentified comparable form
 * †Amblysiphonella timorica
 * †Ampakabastraea
 * †Ampakabastraea cowichanensis
 * †Anahamulina
 * †Anahamulina wilcoxensis
 * †Anatropites
 * †Andrazella
 * †Angulobracchia
 * †Angulobracchia bulbosa
 * †Anoptychia
 * †Anoptychia oregonensis – type locality for species
 * †Antexitus – type locality for genus
 * †Antexitus inusitatus – type locality for species
 * †Antexitus pessagnoi – type locality for species
 * †Antexitus southforkensis – type locality for species
 * †Antexitus yangi – type locality for species
 * †Anthostylis
 * †Anthostylis acanthophora – or unidentified comparable form
 * †Antiquilima
 * †Apiotrigonia
 * †Apiotrigonia condoni
 * †Arcavicula – tentative report
 * Arcestes cropped 1.png †[[Arcestes]]
 * †Arcestes gigantogaleatus – or unidentified comparable form
 * †Archaeocenosphaera
 * †Archaeocenosphaera laseekensis
 * †Archaeodictyomitra
 * †Archaeodictyomitra exigua
 * †Archaeodictyomitra primigena
 * †Archaeohagiastrum
 * †Archaeohagiastrum munitum – or unidentified related form
 * †Archaeohagiastrum oregonense – type locality for species
 * †Archaeospongoprunum
 * †Archaeospongoprunum helense
 * †Archaeospongoprunum praeimlayi
 * †Arietoceltites
 * Astarte elliptica 2008-09-07-4.jpg bivalve]] Astarte''
 * †Astraeomorpha
 * †Astraeomorpha confusa
 * †Astraeomorpha crassisepta
 * †Austrisaturnalis
 * †Austrisaturnalis quadriradiatus – or unidentified related form

B

 * †Baccanella
 * †Badouxia
 * †Badouxia canadensis – type locality for species
 * †Badouxia columbiae
 * †Barbuta
 * †Barbuta senecaensis – type locality for species
 * †Bennettazhia
 * †Bennettazhia oregonensis – type locality for species
 * †Bistarkum
 * †Bistarkum bifurcum – type locality for species
 * †Bistarkum rigidium – type locality for species
 * †Bistarkum saginatum – type locality for species
 * †Broctus
 * †Broctus ruesti – type locality for species
 * †Buchia
 * †Buchia pacifica
 * †Buchia piochii
 * †Buchia uncitoides – or unidentified comparable form
 * †Bulbocyrtium
 * †Bulbocyrtium tubum – type locality for species

C

 * Cadulus
 * Gasteropods - Ammonites - Calycoceras (Newboldiceras) spinosa.JPG †[[Calycoceras]]
 * †Calycoceras naviculare – type locality for species
 * †Camptonectes
 * †Canelonus
 * †Canelonus conus – or unidentified comparable form
 * †Canoptum
 * †Canoptum anulatum
 * †Canoptum artum – type locality for species
 * †Canoptum macoyense – or unidentified comparable form
 * †Canoptum merum
 * †Canoptum poissoni
 * †Canoptum praeanulatum
 * †Canoptum spinosum – type locality for species
 * †Cantalum
 * †Canutus
 * †Canutus fusus – type locality for species
 * †Canutus giganteus
 * †Canutus indomitus
 * †Canutus nitidus – type locality for species
 * †Canutus rockfishensis
 * †Capnodoce
 * †Capnodoce anapetes – or unidentified related form
 * †Capnodoce angusta – type locality for species
 * †Capnodoce antiqua – type locality for species
 * †Capnodoce baldiensis – type locality for species
 * †Capnodoce beaulieui – type locality for species
 * †Capnodoce copiosa – type locality for species
 * †Capnodoce extenta – type locality for species
 * †Capnodoce fragilis – type locality for species
 * †Capnodoce gracilis – type locality for species
 * †Capnodoce insueta – type locality for species
 * †Capnodoce kochi – type locality for species
 * †Capnodoce malaca – type locality for species
 * †Capnodoce media – type locality for species
 * †Capnodoce minuscula – type locality for species
 * †Capnodoce minuta – type locality for species
 * †Capnodoce sinuosa – type locality for species
 * †Capnodoce traversi
 * †Capnuchosphaera
 * †Capnuchosphaera colemani – type locality for species
 * †Capnuchosphaera deweveri
 * †Capnuchosphaera schenki – type locality for species
 * †Capnuchosphaera silviesensis – type locality for species
 * †Capnuchosphaera smithorum – type locality for species
 * †Capnuchosphaera sockensis – type locality for species
 * †Capnuchosphaera soldierensis – type locality for species
 * †Capnuchosphaera texensis – type locality for species
 * Cardinia
 * †Cardinioides
 * †Cardinioides josephus
 * †Cassianella
 * †Cassianella angusta
 * †Catoma – type locality for genus
 * †Catoma concinna – type locality for species
 * †Catoma geometrica – type locality for species
 * †Catoma inedita – type locality for species
 * Cenoceras NT.jpg †[[Cenoceras]]
 * †Cenoceras lupheri – type locality for species
 * †Ceriostella
 * †Charlottea
 * †Charlottea carterae – type locality for species
 * †Charlottea weedensis – or unidentified comparable form
 * Chlamys
 * †Chlamys mojsisovicsi
 * †Chondrocoenia
 * †Chondrocoenia paradoxa
 * †Cleoniceras – tentative report
 * †Cleoniceras dilleri – type locality for species
 * †Coccophyllum – tentative report
 * †Coelastarte
 * †Coenastraea
 * †Coenastraea hyatti
 * †Colospongia
 * †Colospongia utriculus
 * †Corum
 * †Corum candidum – type locality for species
 * †Corum parvum – type locality for species
 * †Crassistella
 * †Crassistella juvavica
 * †Crassistella vesiculosa – or unidentified comparable form
 * †Crenamussium
 * †Crenamussium concentricum
 * Crioceratites_nolani_France_450_mm.jpg †[[Crioceratites]]
 * †Crubus
 * †Crubus chengi – type locality for species
 * †Crubus firmus – type locality for species
 * †Crucella
 * †Crucella angulosa – or unidentified comparable form
 * †Crucella beata – type locality for species
 * †Crucella concinna – type locality for species
 * †Crucella jadeae – type locality for species
 * †Crucella theokaftensis – or unidentified comparable form
 * †Cryptocoelia
 * †Cuifastraea
 * †Cuifastraea granulata
 * †Cyathocoenia
 * †Cyathocoenia gerthi – or unidentified comparable form

D

 * Dentalium
 * †Dentalium stentor
 * †Diceratigalea
 * †Diceratigalea mirus
 * †Diceratigalea venustus
 * †Dichotomites
 * †Diplotremina
 * †Discamphiceras
 * †Discamphiceras ornatum – type locality for species
 * †Discosiphonella
 * †Discotropites
 * †Distichophyllia
 * †Distichophyllia norica
 * †Droltus
 * †Droltus probosus
 * †Droltus sanignacioensis
 * †Drulanta
 * †Drulanta bella – type locality for species
 * †Drulanta pulchra – type locality for species

E

 * †Elodium – tentative report
 * †Elodium mackenziei
 * †Elysastraea
 * †Elysastraea profunda
 * †Emiluvia
 * †Emiluvia bacata – type locality for species
 * †Emiluvia brevispina – type locality for species
 * †Emiluvia goricanae – type locality for species
 * †Emiluvia kozuri – type locality for species
 * †Emiluvia oregonensis – type locality for species
 * †Emiluvia parvinodosa – type locality for species
 * †Emiluvia pessagnoi
 * †Empirea
 * †Endostoma
 * †Entolium
 * †Entolium ceruleus – type locality for species
 * †Eocomoseris
 * †Eocomoseris ramosa
 * †Erugonia
 * †Erugonia canyonensis

F

 * †Fantus
 * †Fantus exiguus – type locality for species
 * †Fantus schoolhousensis – type locality for species
 * †Farcus
 * †Farcus graylockensis
 * †Farcus kozuri – type locality for species
 * †Farcus lepidus – type locality for species
 * †Farcus lipidus – or unidentified comparable form
 * †Farcus multidorsus – type locality for species
 * †Fenestrula
 * †Fenestrula jurassica – type locality for species
 * †Fenestrula oregonensis – type locality for species
 * †Franziceras
 * †Franziceras graylockense – type locality for species
 * †Frenguelliella – tentative report

G

 * †Gablonzeria
 * †Gablonzeria profunda
 * Bakevelliidae - Gervillia inflata.JPG †[[Gervillia]]
 * †Gervillia angusta
 * †Gorgansium
 * †Gorgansium beaverense – type locality for species
 * †Gorgansium browni – type locality for species
 * †Gorgansium morganense
 * †Gorgansium silviesense
 * †Gorgansium thayeri – type locality for species
 * †Gorgansium vallieri
 * †Gorgansium yangi – type locality for species
 * †Grammatodon
 * GryphaeidaeCretaceousTexas.jpg †[[Gryphaea]]
 * †Gryphaea arcuataeformis

H

 * †Hagiastrum
 * †Hagiastrum macrum – type locality for species
 * †Hagiastrum majusculum
 * †Hajarispongia
 * †Hajarispongia whaleni – type locality for species
 * †Halobia
 * †Halobia beyrichi
 * †Halobia dilatata
 * †Halobia halorica
 * †Halobia oregonensis – type locality for species
 * †Halobia radiata
 * †Halobia salinarum
 * †Halobia superba
 * †Halorella
 * †Hannaites
 * †Hannaites riddlensis
 * †Hannaites truncatus
 * †Hannaoceras
 * †Hemicryptocapsa
 * †Heptastylis
 * †Heptastylis aquilae
 * †Heptastylis oregonensis
 * †Hetalum – type locality for genus
 * †Hetalum brevilabrum – type locality for species
 * †Higumastra
 * †Higumastra angustabraccia – type locality for species
 * †Higumastra exigua – type locality for species
 * †Higumastra hui – type locality for species
 * †Higumastra inflata – or unidentified comparable form
 * †Higumastra laxa – type locality for species
 * †Higumastra lupheri – type locality for species
 * †Higumastra obesabraccia – type locality for species
 * †Higumastra transversa
 * †Hilarisirex
 * †Hilarisirex oregonensis
 * †Hiscocapsa
 * †Hiscocapsa funatoensis
 * †Hiscocapsa matsuokai – type locality for species
 * †Hiscocapsa minuta – type locality for species
 * †Hollisites
 * †Hollisites dichotomus – type locality for species
 * †Homoeoparonaella
 * †Homoeoparonaella elegans
 * †Homoeoparonaella hydensis – type locality for species
 * †Homolsomites
 * †Homolsomites stantoni
 * †Hoplocrioceras
 * †Hoplocrioceras remondi – or unidentified comparable form
 * Nephropidae - Hoploparia longimana cropped.jpg †[[Hoploparia]]
 * †Hoploparia riddlensis – type locality for species
 * †Hsuum
 * †Hsuum acutum – type locality for species
 * †Hsuum belliatulum
 * †Hsuum brevicostatum
 * †Hsuum gratum – type locality for species
 * †Hsuum lucidum – type locality for species
 * †Hsuum lupheri
 * †Hsuum mirabundum
 * †Hsuum modicum – type locality for species
 * †Hsuum parasolense
 * †Hsuum parvulum – type locality for species
 * †Hsuum robustum
 * †Hsuum rosebudense
 * †Hyphantoceras
 * †Hyphantoceras ceratopse – tentative report
 * †Hyphantoceras irregulare – tentative report
 * †Hypophylloceras
 * †Hypophylloceras onoense – or unidentified related form
 * †Hypophylloceras onoensis – or unidentified related form

I

 * †Icrioma
 * †Icrioma praecipua – type locality for species
 * †Icrioma transversa – type locality for species
 * Inoceramus steenstrup, world's largest fossil mollusk.jpg †[[Inoceramus]]
 * †Isocyprina

J

 * †Jaworskiella
 * †Jaworskiella supleiensis – type locality for species
 * †Justium – type locality for genus
 * †Justium medium – type locality for species
 * †Justium novum – type locality for species
 * †Justium robustum – type locality for species

K

 * †Kahlerosphaera
 * †Katroma
 * †Katroma angusta – type locality for species
 * †Katroma bicornus – type locality for species
 * †Katroma clara – type locality for species
 * †Katroma inflata – type locality for species
 * †Katroma ninstintsi
 * †Katroma pinquitudo – or unidentified comparable form
 * †Kilianella
 * †Kilianella besairiei – or unidentified comparable form
 * †Krumbeckiella – tentative report
 * †Krumbeckiella timorensis – tentative report
 * †Kuhnastraea
 * †Kuhnastraea decussata
 * †Kuhnastraea incrassata

L

 * †Lantus
 * †Lantus obesus – type locality for species
 * †Lantus sixi – type locality for species
 * †Lanubus
 * †Lanubus alatus – type locality for species
 * †Lanubus dickinsoni
 * †Lanubus hattorii – type locality for species
 * †Lanubus holdsworthi
 * †Lanubus purus
 * †Laxuscingula – type locality for genus
 * †Laxuscingula obesa
 * †Leugeo
 * †Leugeo hullae – type locality for species
 * †Leugeo ordinarius
 * †Leugeo parvispinata
 * Lima
 * †Lima spinigera
 * †Liostrea
 * †Liostrea newelli
 * Lissodus fossil cropped.png †[[Lissodus]]
 * †Lissodus weltoni – type locality for species
 * †Lithiotis
 * †Lithiotis problematica
 * †Loffa
 * †Loffa lepida – type locality for species
 * †Loffa vesterensis – type locality for species
 * Lopha
 * †Lucina
 * †Lupherium
 * †Lupherium nitidum
 * †Lupherium snowshoense
 * Lyelliceratidae - Lyelliceras lyelli.JPG †[[Lyelliceras]]
 * †Lytoceras
 * †Lytoceras aulaeum

M
†Modiolus
 * †Maeandrostylis
 * †Maeandrostylis grandiseptus – type locality for species
 * †Maeandrostylis vancouverensis
 * Gasteropods - Ammonites - Mantelliceras tuberculatum.JPG †[[Mantelliceras]]
 * †Mantelliceras phoenixense – type locality for species
 * †Margarastraea
 * †Margarastraea pulchra – type locality for species
 * †Margarosmilia – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Margarosmilia confluens
 * †Meleagrinella
 * †Metapolygnathus
 * †Metapolygnathus nodosus
 * Milax
 * †Milax alienus
 * †Milax flexuosus
 * Miliolipora
 * †Minetrigonia
 * †Minutusolla – type locality for genus
 * †Minutusolla yaoi – type locality for species
 * †Monotis
 * †Monotis subcircularis
 * †Montlivaltia – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Multimonilis – type locality for genus
 * †Multimonilis pulcher – type locality for species
 * †Multimonilis splendidus – or unidentified comparable form
 * †Myophorella
 * †Myophorella argo – or unidentified comparable form
 * †Myophorella freboldi – type locality for species
 * †Myophorigonia
 * †Myophorigonia kobayashii
 * †Mysidiella
 * †Mysidiella americana – or unidentified comparable form
 * †Mysidiella cordillerana
 * †Mysidioptera
 * †Mysidioptera spinigera
 * †Mysidioptera williamsi

N

 * Napora
 * †Napora antelopensis
 * †Napora aperta – type locality for species
 * †Napora baumgartneri
 * †Napora bearensis
 * †Napora cerromesaensis
 * †Napora cosmica – or unidentified related form
 * †Napora insolita
 * †Napora milleri
 * †Napora morganensis
 * †Napora opaca
 * †Napora proba – type locality for species
 * †Napora propria – type locality for species
 * †Napora relica – type locality for species
 * †Neoconocaryomma – type locality for genus
 * †Neoconocaryomma acusspina – type locality for species
 * †Neoconocaryomma mixtura – type locality for species
 * †Neoconocaryomma tantulimamma – type locality for species
 * †Neoconocaryomma tripalmaspina – type locality for species
 * †Neogondolella
 * †Neowrangellium
 * †Neowrangellium pessagnoi – type locality for species
 * Nerineidae - Nerinea sp..JPG †[[Nerinea]]
 * †Nevadaphyllites
 * †Nevadaphyllites compressus
 * Nodosaria – or unidentified comparable form
 * †Noritus
 * †Noritus lillihornensis – or unidentified comparable form
 * †Noritus pauxillus
 * †Noritus tenuis – type locality for species
 * Nucinella – or unidentified comparable form

O

 * †Occidentocerithium – type locality for genus
 * †Occidentocerithium panthalassicum – type locality for species
 * Olcostephanidae - Olcostephanus astierianus cropped.jpg †[[Olcostephanus]]
 * †Olcostephanus pecki
 * †Olcostephanus popenoei
 * †Ophthalmidium
 * †Oppelismilia
 * †Orbiculiforma
 * †Orbiculiforma densaora – type locality for species
 * †Orbiculiforma hexagonaora – type locality for species
 * †Orbiculiforma iniqua
 * †Orbiculiforma librataspira – type locality for species
 * †Orbiculiforma multifora – or unidentified related form
 * †Orbiculiforma sentarota – type locality for species
 * †Orbiculiformella
 * †Orbiculiformella callosa
 * †Orbiculiformella trispina – type locality for species
 * †Oregoniceras
 * †Oregoniceras jacksonense – type locality for species
 * †Oregoniceras jillsoni – type locality for species
 * †Oregoniceras multicostum
 * †Oregoniceras phoenixense – type locality for species
 * Oyster.jpg [[Ostrea]]
 * †Otoscaphites
 * †Otoscaphites perrini
 * †Oxytropidoceras

P

 * †Pachus – tentative report
 * Pachydiscus neubergicus cropped.jpg †[[Pachydiscus]]
 * †Pachydiscus ashlandicus – type locality for species
 * †Pachydiscus oregonensis – type locality for species
 * †Pachyoncus
 * †Pachyoncus crassus – type locality for species
 * †Pachyoncus floreus – type locality for species
 * †Pachyoncus tumidus
 * †Pachyoncus varius
 * †Palaeodasycladus – tentative report
 * †Palaeosaturnalis
 * †Palaeosaturnalis subovalis
 * †Palaxius
 * †Palinandromeda
 * †Palinandromeda fimbria
 * †Pamiroseris
 * †Pamiroseris meriani
 * †Pamiroseris smithi
 * †Pantanellium
 * †Pantanellium baileyi – type locality for species
 * †Pantanellium butonense – type locality for species
 * †Pantanellium cumshewaense
 * †Pantanellium fosteri
 * †Pantanellium foveatum
 * †Pantanellium inornatum
 * †Pantanellium latum – type locality for species
 * †Pantanellium malheurense – type locality for species
 * †Pantanellium pinguisfloreus – type locality for species
 * †Pantanellium sincerum – type locality for species
 * †Pantanellium ultrasincerum
 * †Pantanellium vigrassi – type locality for species
 * †Pantanellium wui – type locality for species
 * †Paradelphinulopsis – type locality for genus
 * †Paradelphinulopsis vallieri – type locality for species
 * †Paradeningeria – tentative report
 * †Paradiscamphiceras
 * †Paradiscamphiceras athabascanense
 * †Paradiscamphiceras dickinsoni
 * †Paradiscamphiceras elkhornense – type locality for species
 * †Parahsuum
 * †Parahsuum formosum – type locality for species
 * †Parahsuum hiconocosta
 * †Parahsuum izeense
 * †Parahsuum mostleri – type locality for species
 * †Parahsuum officerense
 * †Parahsuum publicum
 * †Parahsuum sporta – type locality for species
 * †Parahsuum vizcainoense
 * †Parallelodon
 * †Parallelodon monobensis – or unidentified comparable form
 * †Parasaturnalis
 * †Parasaturnalis diplocyclis – type locality for species
 * †Parasaturnalis yehae – type locality for species
 * †Parasepsagon
 * †Parasepsagon variabilis
 * †Parentactinia
 * †Parentactinia nakatsugawaensis
 * †Parentactinosphaera – tentative report
 * †Parentactinosphaera longispinosa
 * †Paronaella
 * †Paronaella araneae
 * †Paronaella bona – type locality for species
 * †Paronaella curticrassa
 * †Paronaella fera – type locality for species
 * †Paronaella grahamensis
 * †Paronaella kotura
 * †Paronaella obesa
 * †Paronaella pessagnoi
 * †Paronaella pygmaea
 * †Paronaella skowkonaensis
 * †Paronaella snowshoensis – type locality for species
 * †Paronaella venadoensis – or unidentified related form
 * †Parvicingula
 * †Parvicingula blackhornensis
 * †Parvicingula blackhorsensis
 * †Parvicingula elegans
 * †Parvicingula matura
 * †Parvicingula media
 * †Parvicingula praeacutum
 * †Parvifavus
 * †Parvifavus irregularis
 * †Parvivacca
 * †Parvivacca blomei – or unidentified comparable form
 * †Perispyridium
 * †Perispyridium apertum – type locality for species
 * †Perispyridium darwini
 * †Perispyridium dettermani – or unidentified comparable form
 * †Perispyridium dumitricai
 * †Perispyridium facetum
 * †Perispyridium gujohachimanense
 * †Perispyridium oregonense – type locality for species
 * †Perispyridium schopfi
 * †Perispyridium tamarackense
 * †Perispyridium whalenae – type locality for species
 * Matmor calcisponge Peronidella.jpg †[[Peronidella]]
 * †Phacelostylophyllum
 * †Phacelostylophyllum zitteli
 * Pholadomya
 * †Phylloceras
 * †Phylloceras umpquanum
 * †Phyllopachyceras
 * †Phyllopachyceras trinitense
 * †Phyllopachyceras umpquanum
 * †Plafkerium
 * †Plafkerium robustum – type locality for species
 * †Plagiostoma – tentative report
 * †Planiinvoluta
 * †Platymya
 * †Platymya rockymontana
 * †Pleesus
 * †Pleesus aptus – type locality for species
 * †Pleuromya
 * †Pleuronectites
 * Plicatula
 * †Plicatula hekiensis
 * †Poulpus
 * †Poulpus haeckeli – type locality for species
 * †Poulpus karnicus – type locality for species
 * †Poulpus lupheri – type locality for species
 * †Praeconocaryomma
 * †Praeconocaryomma decora – type locality for species
 * †Praeconocaryomma parvimamma
 * †Praeconocaryomma splendida – type locality for species
 * †Praeconocaryomma whiteavesi
 * †Praeconocaryomma yakounensis
 * †Praeparvicingula
 * †Praeparvicingula burnsensis
 * †Praeparvicingula communis
 * †Praeparvicingula decora
 * †Praeparvicingula grantensis
 * †Praeparvicingula inornata
 * †Praeparvicingula prisca
 * †Praeparvicingula profunda
 * †Praeparvicingula schoolhousensis
 * †Praeparvicingula sodaensis
 * †Praeparvicingula tlellensis
 * †Praeparvicingula vera
 * †Procyclolites
 * †Promathildia
 * †Pronoella
 * †Pronoella uintahensis
 * †Protorcula
 * †Protorcula frydai
 * †Protunuma
 * †Protunuma japonicus
 * †Pseudocrucella
 * †Pseudocrucella hilara – type locality for species
 * †Pseudocrucella ornata – type locality for species
 * †Pseudocrucella pecta – type locality for species
 * †Pseudocrucella prava
 * †Pseudocrucella tangae – type locality for species
 * †Pseudoheliodiscus
 * †Pseudolimea
 * †Pseudolimea naumanni
 * †Pseudopantanellium
 * †Pseudopantanellium floridum – type locality for species
 * †Pseudopoulpus
 * †Pseudopoulpus acutipodium – type locality for species
 * †Pseudopoulpus deweveri – type locality for species
 * †Pseudoristola
 * †Pseudoristola faceta – type locality for species
 * †Pseudoristola megaglobosa – type locality for species
 * †Pseudosaturniforma
 * †Pseudosaturniforma minuta
 * †Pseudospondylospira
 * †Pseudospondylospira perplexa
 * †Pseudostylosphaera
 * †Pseudostylosphaera japonica
 * †Pseudostylosphaera magnispinosa – type locality for species
 * †Purpuroidea – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Pylostephanidium

Q

 * †Quadrisaturnalis – type locality for genus
 * †Quadrisaturnalis dickinsoni – type locality for species
 * †Quadrisaturnalis grandis – type locality for species
 * †Quadrisaturnalis quadratus – type locality for species
 * †Quarticella
 * †Quarticella ovalis – or unidentified comparable form

R

 * †Radium – type locality for genus
 * †Radium pessagnoi – type locality for species
 * †Recticostastraea – type locality for genus
 * †Recticostastraea wallowaensis – type locality for species
 * †Renzium – type locality for genus
 * †Renzium adversum – type locality for species
 * †Renzium webergorum – type locality for species
 * †Retiophyllia
 * †Retiophyllia dawsoni
 * †Retiophyllia norica
 * †Retiophyllia oppeli – or unidentified related form
 * †Retiophyllia parviseptum
 * †Ristola
 * †Ristola prisca
 * †Ristola reliqua – type locality for species
 * †Ristola turpicula
 * †Rolumbus
 * †Rolumbus beatus – type locality for species
 * †Rolumbus hilarus – type locality for species
 * †Rolumbus lautus – type locality for species

S

 * †Saitoum
 * †Saitoum coronarium – or unidentified comparable form
 * †Saitoum dickinsoni – type locality for species
 * †Saitoum smithi – type locality for species
 * †Saitoum thayeri – type locality for species
 * †Salzburgia – tentative report
 * †Sarasinella
 * †Sarasinella densicostata – or unidentified comparable form
 * †Sarasinella hyatti
 * †Sarasinella subspinosa – or unidentified comparable form
 * †Sarla
 * †Sarla delicata – type locality for species
 * †Sarla externa – type locality for species
 * †Sarla formosa – type locality for species
 * †Sarla plena – type locality for species
 * †Sarla triangulata – type locality for species
 * †Sarla vetusta – or unidentified related form
 * †Scalarites
 * †Scalarites mihoensis
 * †Scaphites
 * †Scaphites condoni
 * †Schistophylloceras
 * †Schistophylloceras aulonotum – or unidentified related form
 * †Sepsagon
 * †Sepsagon longispinosus
 * †Septocardia
 * Species of Shastasaurus.jpg †[[Shastasaurus]]
 * †Shastasaurus pacificus – or unidentified comparable form
 * †Silicarmiger
 * †Simbirskites
 * †Simbirskites elatus – or unidentified related form
 * †Simbirskites progrediens – or unidentified related form
 * †Sontonaella
 * †Sontonaella concinna – type locality for species
 * †Sontonaella spongiosa – type locality for species
 * †Spinidelphinulopsis – type locality for genus
 * †Spinidelphinulopsis whaleni – type locality for species
 * †Spitidiscus
 * †Spitidiscus oregonensis – type locality for species
 * †Spondylospira
 * †Spondylospira lewesensis
 * †Spondylospira tricosta
 * †Spongiomorpha
 * †Spongiomorpha acyclica
 * †Spongiomorpha gibbosa – or unidentified comparable form
 * †Spongiomorpha tenuis
 * †Spongocapsula
 * †Spongocapsula palmerae
 * †Spongostylus
 * †Spongostylus carnicus
 * †Stauracontium – tentative report
 * †Stauracontium trispinosum
 * †Stromatomorpha
 * †Stuoresia
 * †Stuoresia libratosepta – or unidentified comparable form
 * †Stylophyllopsis
 * †Stylophyllopsis lindstroemi – or unidentified comparable form
 * †Stylophyllopsis rudis – or unidentified comparable form
 * †Stylophyllum
 * †Subprionocyclus
 * †Subprionocyclus branneri
 * †Subprionocyclus neptuni
 * †Subprionocyclus normalis – type locality for species
 * †Sympolycyclus
 * †Syringocapsa
 * †Syringocapsa turgida

T

 * †Tardentactinia
 * †Tardentactinia oregonensis – type locality for species
 * †Teichertus
 * †Teichertus pessagnoi – type locality for species
 * †Teichertus splendidus
 * †Telacapsula – type locality for genus
 * †Telacapsula johndayensis – type locality for species
 * †Telacapsula littlescottyensis – type locality for species
 * †Telacapsula odoghertyi – type locality for species
 * †Telacapsula wangi – type locality for species
 * †Tetraditryma
 * †Tetraditryma coldspringensis
 * †Tetraditryma corralitosensis
 * †Tetraditryma pseudoplena
 * †Tetragonites
 * †Tetragonites glabrus
 * †Tetragonites jacksonense – type locality for species
 * †Tetrarchiplagia
 * †Tetrarchiplagia yehae
 * †Tetratrabs
 * †Tetratrabs acutusspina – type locality for species
 * †Tetratrabs izeensis – type locality for species
 * †Tetratrabs robustusspina – type locality for species
 * Thamnasteriidae - Thamnasteria cropped.jpg †[[Thamnasteria]]
 * †Thamnasteria borealis
 * †Thamnasteriamorpha
 * †Thamnasteriamorpha frechi
 * †Thecomeandra
 * †Thecomeandra vallieri
 * †Thecosmilia – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Thurmanniceras
 * †Thurmanniceras jenkinsi
 * †Thurmanniceras stippi – or unidentified comparable form
 * †Thurmanniceras wilcoxi
 * †Thurstonia
 * †Thurstonia gibsoni – or unidentified comparable form
 * †Tolypammina
 * †Tosapecten
 * †Tosapecten subhiemalis
 * †Tozerium
 * †Tragodesmoceras
 * †Tragodesmoceras ashlandicum
 * †Triactoma
 * †Triactoma rosespitensis
 * †Triassocampe
 * †Triassocampe exilis – type locality for species
 * †Triassocampe illyrica
 * †Triassocampe immaturum
 * †Triassocampe pulchra – or unidentified comparable form
 * †Triassocampe sulovensis
 * †Triassocingula
 * †Triassocyrtium – tentative report
 * Trigoniidae - Trigonia interlaevigata.JPG †[[Trigonia]]
 * †Trigonia montanaensis
 * †Trillus
 * †Trillus elkhornensis
 * †Trillus seidersi – type locality for species
 * †Tripocyclia
 * †Tripocyclia brooksi
 * †Tripocyclia smithi
 * †Tripocyclia southforkensis
 * †Tripocyclia wickiupensis
 * †Tritrabs
 * †Tritrabs simplex
 * †Tritrabs suavis
 * †Tritrabs worzeli – or unidentified comparable form
 * †Triversus
 * †Triversus fastigatus
 * Trochocyathus
 * †Trochocyathus oregonensis – type locality for species
 * †Tropites
 * †Turanta
 * †Turanta fida – type locality for species
 * †Turanta morinae
 * †Turanta nodosa
 * †Turristylus
 * †Turristylus triadicus – or unidentified related form
 * Turritellatricarinata.jpg [[Turritella]]
 * †Turritella buwaldana
 * †Tutcheria
 * †Tutcheria densestriata
 * †Tutcheria densestriatum

U

 * †Undularia
 * †Unuma – tentative report
 * †Unuma unicus – type locality for species
 * †Uvanella
 * †Uvanella norica

V

 * †Vaugonia
 * †Vaugonia oregonensis – type locality for species
 * †Vaugonia yukonensis – tentative report
 * Venericardia
 * †Vermiceras
 * †Vermiceras mineralense
 * †Vermiceras morganense – type locality for species
 * †Vermiceras rursicostatum – or unidentified related form
 * †Verticiplagia
 * †Verticiplagia oregonensis – type locality for species
 * †Verticiplagia verticillata
 * †Verticiplagia yehae

W

 * †Wallowaconcha
 * †Wallowaconcha raylenea
 * †Wallowanerita – type locality for genus
 * †Wallowanerita newtonae – type locality for species
 * †Wellsia
 * †Wellsia oregonensis
 * †Wellsia packardi
 * †Wellsia vigorosa
 * †Weyla
 * †Williriedellum
 * †Williriedellum frequens
 * †Wilvemia
 * †Wrangellium
 * †Wrangellium izeense – type locality for species
 * †Wrangellium oregonense – type locality for species
 * †Wrangellium thurstonense – or unidentified comparable form

X

 * †Xiphostylus
 * †Xiphostylus communis – type locality for species
 * †Xiphostylus fragilis
 * †Xiphostylus halli
 * †Xiphostylus logdellensis
 * †Xiphostylus simplus – type locality for species
 * †Xiphostylus sinuosus
 * †Xiphostylus superbus
 * †Xiphostylus vallieri
 * †Xiphostylus whalenae
 * †Xiphotheca
 * †Xiphothecaella
 * †Xiphothecaella longa

Y

 * †Yamatoum
 * †Yeharaia
 * †Yeharaia elegans

Z

 * †Zardinia – tentative report
 * †Zartus
 * †Zartus dickinsoni – type locality for species
 * †Zartus imlayi – type locality for species
 * †Zartus jonesi – type locality for species
 * †Zartus jurassicus – type locality for species
 * †Zartus praejonesi – type locality for species
 * †Zartus thayeri – type locality for species
 * †Zoneait – type locality for genus
 * †Zoneait nargorum – type locality for species
 * †Zugmayerella
 * †Zugmayerella americana – type locality for species
 * †Zugmayerella uncinata