Paleozoic
Selected Paleozoic taxa of Arizona
- † Achistrum
- † Aglaocrinus
- † Altudoceras
- † Alula
- † Amphiscapha
- † Annularia
- † Anomphalus
- † Aphyllopteris
- † Arastra – type locality for genus
- † Archaeocidaris
Fossils of the Carboniferous-Permian bryozoan Archimedes - † Arizonerpeton – type locality for genus
- † Athyris
- † Aulopora
- † Aviculopecten
- † Aviculopecten bellatulus – type locality for species
- † Aviculopecten girtyi – or unidentified comparable form
- † Aviculopecten kaibabensis – type locality for species
- † Bellerophon
- † Brachyphyllum
Fossilized stems from the Carboniferous-Permian horsetail relative Calamites - † Callipteris
- † Camarotoechia
- † Caninia – tentative report
- † Chonetes
- † Cleiothyridina
Fossilized shell of the Late Devonian-Permian brachiopod Composita - † Cooksonia – or unidentified comparable form
- † Cordaites
- † Cycloceras
- † Cyclopteris
- † Cymatochiton – tentative report
Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer - † Cystodictya
- † Echinaria
- † Edmondia
- † Elfridia – type locality for genus
- † Elrathia
- Eocaudina
- † Euomphalus
- † Fenestella
- † Fusulina
Life restoration of the Carboniferous shark Glikmanius - † Globular
- † Gnathorhiza – or unidentified comparable form
- † Hastimima – tentative report
- † Hedeia
- † Hexagonaria
- † Hyolithes
- † Icriodus
- † Idiognathodus
- † Kaibabvenator – type locality for genus
- † Kaibabvenator swiftae – type locality for species
- † Kootenia
- † Lepidodendron
- † Lepidostrobus
- † Lingula
- † Lingulella
- † Liroceras
Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras - † Michelina
- † Modiolus
- † Murchisonia
- † Naticopsis
- † Naticopsis kaibabensis – type locality for species
- † Naticopsis waterlooensis
- † Neospirifer – tentative report
- † Neuropteris
- † Nisusia
- Nucula
Restoration of the Cambrian trilobite Olenellus - † Ophiderpeton
- † Orodus
- † Orthacanthus
- † Pachyphyllum
- † Pagiophyllum
- † Paladin
- † Palmatolepis
- † Paterina
- † Pecopteris
- † Pentremites
- † Petalodus
- † Phillipsia
Life restoration of the Carboniferous-Permian amphibian Phlegethontia . - † Pinna
- † Platyceras
- † Polygnathus
- † Prodentalium
- † Ptyonius – tentative report
- † Rugosa
- † Sallya – tentative report
- † Scoyenia
- Serpula
- Solemya
- † Solenomorpha – report made of unidentified related form or using admittedly obsolete nomenclature
- † Spathognathodus
Fossilized leaves and branches of the Devonian-Triassic horsetail relative Sphenophyllum - † Sphenophyllum gilmorei – type locality for species
- † Sphenophyllum oblongifolium
- † Sphenopteris
- † Spirifer
- † Spiriferina
- † Stigmaria
- † Stroboceras
- † Syringopora
- † Tainoceras
Life restoration of the Carboniferous-Triassic freshwater shark Triodus - † Venustodus
- † Vidria
- † Walchia
- † Wardia
- † Wilkingia
- † Worthenia
- † Yarravia
- Yoldia
