million years. Peraceras hessei Prothero & Manning 1987 Peraceras profectum Matthew 1899 Peraceras superciliosus Cope 1880 Peraceras at fossilworks v...

†Floridaceras 20.4–16.3 Ma †Hoploaceratherium 16.9–16.0 Ma †Mesaceratherium †Peraceras 20.6–10.3 Ma †Plesiaceratherium 20.0–11.6 Ma †Ronzotherium 37–23 Ma †Shansirhinus...

Dromoceratherium Floridaceras Galushaceras Hoploaceratherium Mesaceratherium Peraceras Persiatherium Plesiaceratherium Proaceratherium Prosantorhinus Shansirhinus...

03—5.33 Ma. Proboscidea (Gomphotheriidae) Gomphotherium Rhinocerotidae Peraceras Serbelodon S. burnhami Equidae Dinohippus Pliohippus P. tantalus Megahippus...

unidentified comparable form †Pauromys †Pauromys exallos †Peraceras †Peraceras profectum †Peraceras superciliosum †Perognathoides †Perognathoides quartus...

species †Penthetria rubiensis – type locality for species †Peraceras †Peraceras profectum †Peraceras superciliosum †Peradectes †Peradectes elegans – or unidentified...

report †Pediolophodon †Pediomeryx †Peltosaurus †Peltosaurus granulosus †Peraceras Perognathus Peromyscus †Phasianus †Phenacocoelus Phenacomys †Phenacomys...

†Paracamelus †Paracynarctus †Parahippus †Paratomarctus †Paronychomys †Peraceras Perognathus Peromyscus Phenacomys Phrynosoma †Phrynosoma platyrhinos Picea...

camelid. Paracosoryx P. furlongi Kern County, California. An antilocaprid. Peraceras P. sp. Kern County, California. A rhinoceros. Plioceros P. sp. Kern County...

†Pepsis †Pepsis avitula – type locality for species †Peraceras †Peraceras profectum †Peraceras superciliosum †Peradectes †Peradectes elegans – type locality...

Panthera †Panthera leo †Paramylodon †Paramylodon harlani †Pediomeryx †Peraceras Perca †Perca flavescens Perognathus Peromyscus Phenacomys †Phenacomys...

†Penetrigonias dakotensis – type locality for species †Peraceras †Peraceras profectum †Peraceras superciliosum †Perchoerus †Perchoerus probus – tentative...

sylviae †Parictis †Parthenocissus †Paulownia †Peltosaurus Penthetria †Peraceras Perognathus Peromyscus †Peromyscus maniculatus – or unidentified comparable...

†Parapliosaccomys †Parapliosaccomys hibbardi †Pediomeryx †Pediomeryx hemphillensis †Peraceras Perca †Perca flavescens Perognathus †Perognathus coquorum – or unidentified...

†Pelycomys †Pelycomys placidus †Penetrigonias †Penetrigonias dakotensis †Peraceras †Peraceras superciliosum †Perchoerus †Perchoerus minor †Perchoerus nanus †Perchoerus...

tentative report †Penetrigonias †Penetrigonias dakotensis †Peraceras †Peraceras hessei †Peraceras superciliosum †Peradectes – tentative report †Peratherium...

type locality for species †Parvitragulus †Pelycodus †Pelycodus jarrovii †Peraceras Perognathus †Perognathus flavus Peromyscus †Peromyscus boylii †Peromyscus...

or unidentified comparable form †Pelecanus occidentalis †Peltosaurus †Peraceras Perognathus Peromyscus †Peromyscus truei – or unidentified comparable...

†Paratomarctus †Paratylopus †Parictis †Peltosaurus †Peltosaurus granulosus †Peraceras Perognathus Peromyscus †Philotrox †Philotrox condoni †Phlaocyon †Phlaocyon...

tentative report †Parvitragulus †Pediomeryx †Peltosaurus – tentative report †Peraceras †Peratherium Perognathus †Perognathus flavus Peromyscus †Peromyscus boylii...

macrodon – type locality for species Penitella †Penitella penita †Peraceras †Peraceras superciliosum †Peradectes †Peradectes californicus †Periaster Pericosmus...

danielsae †Pelycodus jarrovii Penthetria – type locality for genus †Pepsis †Peraceras †Peratherium Peromyscus †Peromyscus maniculatus Persea †Petraeomyrmex...