Paleozoic
Selected Paleozoic taxa of Missouri
- † Achatella
- † Achistrum
- † Acutimitoceras – tentative report
Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris - † Amphiscapha
- † Ananias
- † Annularia
- † Anomphalus
- † Anthracoceras
Restoration of the Late Ordovician nautiloid cephalopod Aphetoceras being preyed upon by a Cameroceras - † Aphlebia
- † Archeognathus – type locality for genus
- † Artisia
- † Asterotheca
- † Athyris
- † Aulochiton – type locality for genus
- † Aviculopecten
- † Avonia
- † Bellerophon
- † Bellerophon graphicus
- † Bellerophon jeffersonensis – type locality for species
- † Bembexia
- † Beyrichoceras
- † Bisatoceras
- † Bolbocephalus
- † Bumastus
Fossilized stems from the Carboniferous-Permian horsetail relative Calamites - † Calyptaulax
- † Camarotoechia
- † Campbelloceras
- † Cardiocarpus
- † Cavusgnathus
Fossil of the Middle-Late Ordovician trilobite Ceraurus - † Chelodes
- † Chonetes
- † Clarkoceras
- † Cleiothyridina
- † Cliftonia
- † Coenocystis
Fossilized shell of the Late Devonian-Permian brachiopod Composita - † Conocardium
- † Coolinia
- † Cordaicarpus
- † Cordaites
- † Cornuella – type locality for genus
- † Cornulites
- † Crania
- † Crepipora
- † Crepipora globulifera – type locality for species
- † Curtognathus
- † Cyclonema
- † Cyclopteris
- † Cyphaspis
- † Cyrtoceras
- † Cyrtolites
- † Dalmanites
- † Deckera
- † Della
- † Dicoelosia
Illustration of the jaws of Dinichthys - † Domatoceras
- † Dorycordaites
- † Earlandia
- † Echinosphaerites
- † Edmondia
- † Ellesmeroceras
- Eocaudina
- † Eospirifer
- † Euomphalus
Life restoration of the Permian Chimaera relative Fadenia - † Favosites
- † Flexicalymene
- † Gervillia
- † Glossina
- † Gnathodus
- † Gondolella
- † Halysites
- † Helcionopsis
- † Hemithecella – type locality for genus
- † Hindia
- † Holia – type locality for genus
- † Holopea
- † Hyolithes
- † Hypseloconus
- † Idiognathodus
- † Irvingella
Fossil of the Middle-Late Ordovician giant trilobite Isotelus . - † Jeffersonia
- † Kendallina
- † Kirengella
- † Kirkella – type locality for genus
- † Lepidophyllum
- † Lingula
- † Liroceras
- † Matthevia
- † Maximites
- † Meristella
- † Meristina
- † Metacoceras
- † Murchisonia – tentative report
Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis - † Naticopsis judithae – type locality for species
- † Naticopsis marthaae – type locality for species
- † Naticopsis scintilla – type locality for species
- † Naticopsis wortheniana – type locality for species
- † Neospirifer
- † Neuropteris
- Nucula
- † Oncagnostus
Restoration of the Carboniferous-Permian cartilaginous fish Orodus - † Orthoceras
- † Orygmaspis
- † Oulodus
- † Ozarkodina
- † Palaeoniscus
- † Paradycheia – type locality for genus
- † Pecopteris
- † Phillipsia – tentative report
- † Phragmolites
- † Pinnularia
- † Platyceras
- † Pleurocystites
- † Plicochonetes
- † Polygnathus
- † Prioniodus
- † Proetus
- † Pseudopolygnathus
- † Pteridosperm
- † Pterotheca
Life restoration of the Late Devonian placoderm fish Ptyctodus - † Quadratia
- † Receptaculites
- † Remopleurides
- † Robustum – type locality for genus
- † Robustum nodum – type locality for species
- † Rota
- † Shelbyoceras – type locality for genus
- † Sigillaria
- † Skenidioides
- Solemya
- † Spathognathodus
- † Sphaerocoryphe
- † Sphenophyllum
- † Sphenopteris
Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer - Spirorbis
- † Spyroceras
- † Strepsodiscus
- † Streptognathodus
- † Streptognathodus clarki – type locality for species
- † Strophomena
- † Subulites
- † Tarphyceras
Fossil of the Cambrian trilobite Tricrepicephalus - † Tryblidium
- † Vellamo
- † Whiteavesia
- † Wilkingia
- † Worthenia
