 |
Pachydiscus caterinae |
fossil |
Cretaceous |
cephalopod |
|
Pachyornis elephantopus |
cast of skull |
Quaternary |
bird |
|
Paedeumias |
fossil |
Cambrian |
arthropod |
 |
Paleobergbia |
cast of fish |
Mississippian |
fish |
|
Paleothyris acadiana |
cast of skeleton |
Pennsylvanian |
reptile |
|
Pantylus |
cast of skull |
Permian |
amphibian |
|
Paraceltites elegans |
fossil |
Permian |
cephalopod |
 |
Paracenoceras hexagonum |
fossil |
Jurassic |
cephalopod |
 |
Paradoxides davidis |
cast |
Cambrian |
arthropod |
|
Parahippus |
cast of skull and jaw |
Tertiary |
mammal |
|
Paralegoceras sundaicum |
fossil |
Permian |
cephalopod |
|
Paranautilus |
fossil |
Triassic |
cephalopod |
|
Paraschumardites senex |
fossil |
Pennsylvannian |
cephalopod |
|
Paraspirifer |
fossil |
Devonian |
brachiopod |
|
Paraster |
fossil |
Tertiary |
echinoderm |
|
Paratissotia |
fossil |
Cretaceous |
cephalopod |
|
Paraussuria |
fossil |
Triassic |
cephalopod |
|
Pedeticosaurus |
cast of skeleton |
Jurassic |
reptile |
|
Pelycodus jarrovii |
cast of left mandible |
Tertiary |
primate |
 |
Perisphinctes |
fossil |
Jurassic |
cephalopod |
|
Peritrochia |
fossil |
Permian |
cephalopod |
|
Perrinites |
fossil |
Permian |
cephalopod |
|
Perrinites |
fossil |
Permian |
cephalopod |
|
Phacops rana |
fossil |
Devonian |
arthropod |
|
Phenacolemur |
cast of right mandible |
Tertiary |
primate |
 |
Phlebolepis elegans |
cast |
Silurian |
fish |
|
Phororhacos logissimus |
cast of skull |
Tertiary |
bird |
|
Phyllocanthus |
fossil |
Quaternary |
echinoderm |
|
Phylloceras |
fossil |
Jurassic |
cephalopod |
 |
Pikaia gracilens |
cast |
Cambrian |
chordate |
 |
Pionaspis |
cast of head |
Devonian |
fish |
 |
Plancenticeras meeki |
fossil |
Cretaceous |
cephalopod |
|
Placites |
fossil |
Triassic |
cephalopod |
 |
Plateosaurus englehardti |
cast of skull and jaw |
Triassic |
dinosaur |
|
Platycrinites |
fossil |
Mississippian |
echinoderm |
|
Platygyra |
fossil |
Quaternary |
coral |
 |
Platysomus |
cast of whole fish |
Pennsylvanian |
fish |
|
Plegiocidaris |
fossil |
Jurassic |
echinoderm |
|
Plesiadapis tricuspidens |
cast of skull and jaw |
Tertiary |
primate |
 |
Pleuronoceras nodosom |
fossil |
Devonian |
cephalopod |
|
Pliopithecus antiquus |
cast of jaw |
Tertiary |
primate |
|
Pliotoxaster |
fossil |
Cretaceous |
echinoderm |
|
Poebrotherium |
cast of skull and jaw |
Tertiary |
mammal |
|
Polydieoxidina |
fossil |
Permian |
eukaryote |
 |
Polydieoxidina |
fossil |
Permian |
eukaryote |
|
Popanoceras |
fossil |
Permian |
cephalopod |
 |
Poraspis heintzi |
cast of model |
Devonian |
fish |
|
Poronites arkansasensis |
fossil |
Pensylvannian |
cephalopod |
|
Probainognathus jenseni |
cast of skull and jaw |
Triassic |
mammal-like reptile |
|
Probelesodon lewisi |
cast of skull and jaw |
Triassic |
mammal-like reptile |
|
Probelesodon minor |
cast of skull |
Triassic |
mammal-like reptile |
|
Proclydonautilus |
fossil |
Triassic |
cephalopod |
|
Procolophan |
cast of skull and jaw |
Triassic |
reptile |
|
Proconsul |
cast of skull and jaw |
Tertiary |
primate |
|
Procynosuchus |
cast of skull |
Permian |
mammal-like reptile |
|
Prolecanites |
fossil |
Mississippian |
cephalopod |
|
Prolecanites conkinorum |
fossil |
Mississippian |
cephalopod |
|
Prorubidgea |
cast of skull and jaw |
Permian |
mammal-like reptile |
|
Proshumardites |
fossil |
Pennsylvanian |
cephalopod |
 |
Proterogyrinus scheelei |
cast of front limb |
Mississippian |
amphibian |
|
Proterosuchus |
cast of skull and jaw |
Triassic |
reptile |
|
Prothalassoceras |
fossil |
Pennsylvanian |
cephalopod |
|
Prothalassoceras |
fossil |
Permian |
Basleo W Timor |
|
Protopaleaster |
fossil |
Ordovician |
echinoderm |
|
Protrachyceras |
fossil |
Triassic |
cephalopod |
|
Prouddenites primus |
fossil |
Pensylvannian |
cephalopod |
|
Psephechinus |
fossil |
Jurassic |
echinoderm |
|
Pseudogygites |
fossil |
Ordovician |
arthropod |
|
Pseudosageceras |
fossil |
Triassic |
cephalopod |
|
Pseudosageceras |
fossil |
Triassic |
cephalopod |
 |
Pseudoschwagerina texana |
fossil |
Permian |
eukaryote |
|
Pseudoschwagerina uddeni |
fossil |
Permian |
eukaryote |
|
Pseudotetonius ambiguus |
cast of mandible |
Tertiary |
primate |
|
Psittacosaurus mongoliensis |
cast of skull and jaw |
Cretaceous |
dinosaur |
 |
Pteraspis |
fossil |
Devonian |
fish |
 |
Pterichthyodes milleri |
cast of fossil |
Devonian |
fish |
|
Pteroblastus |
fossil |
Permian |
echinoderm |
 |
Pteranodon |
cast of skull |
Cretaceous |
reptile |
|
Pteranodon |
cast of skeleton |
Cretaceous |
reptile |
 |
Pterodactylus elegans |
cast of skeleton |
Jurassic |
reptile |
|
Pterolytoceras |
fossil |
Jurassic |
cephalopod |
|
Pterolytoceras |
fossil |
Jurassic |
cephalopod |
|
Pterolytoceras |
fossil |
Jurassic |
cephalopod |
|
Ptilodus montanus |
cast of skull |
Tertiary |
mammal |
|
Puzosia |
fossil |
Cretaceous |
cephalopod |
 |
Rhacolepis |
whole fish |
Cretaceous |
fish |
|
Rhacophyllites |
fossil |
Triassic |
cephalopod |
|
Rhacophyllites |
fossil |
Triassic |
cephalopod |
|
Rhamphorhynchus |
cast of skeleton |
Jurassic |
reptile |
|
Rhizodus hibberti |
cast of tooth |
Mississippian |
fish |
 |
Rhizodus sp. |
photo of right mandible |
Mississippian |
fish |
 |
Rhizodus robustus |
photo of anterior mandible |
Pennsylvanian |
fish |
|
Riojasuchus |
cast of skull and jaw |
Triassic |
reptile |
|
Rooneyia |
cast of skull |
Tertiary |
primate |
 |
Sacabambaspis |
cast of whole fish |
Ordovician |
fish |
|
Sageceras |
fossil |
Triassic |
cephalopod |
 |
Sauripteris taylori |
cast of pectoral fin |
Devonian |
fish |
 |
Sauroposeidon |
cast of juvenile track |
Cretaceous |
dinosaur |
|
Saurosuchus |
cast of skull |
Triassic |
reptile |
 |
Saurosuchus imperator |
cast of tooth |
Cretaceous |
reptile |
|
Scaloposaurus |
cast of skull |
Triassic |
mammal-like reptile |
|
Scaphonyx |
cast of skull |
Triassic |
reptile |
 |
Scaumenacia curta |
photo |
Devonian |
fish |
|
Schistoceras |
fossil |
Pennsylvanian |
cephalopod |
 |
Schwagerina huecoensis |
fossil |
Permian |
eukaryote |
|
Scutosaurus |
cast of skull fragment |
Permian |
reptile |
|
Scyphocrinites |
fossil |
Devonian |
echinoderm |
|
Secodontosaurus |
cast of skull and jaw |
Permian |
mammal-like reptile |
|
Seymouria |
cast of skeleton |
Permian |
amphibian |
|
Sharovipteryx |
cast of skeleton |
Triassic |
reptile |
|
Sahelanthropus tchandensis |
cast of skull |
Tertiary |
primate |
|
Shoshonius |
cast of skull |
Tertiary |
primate |
|
Shumardites |
fossil |
Pennsylvanian |
cephalopod |
|
Sivapithecus |
cast of jaw |
Tertiary |
primate |
|
Sivapithecus indicus |
cast of jaw |
Tertiary |
primate |
|
Smilodectes gracilis |
cast of skull |
Tertiary |
primate |
|
Smilodon |
cast of skull and jaw |
Quaternary |
mammal |
|
Sphenodiscus |
fossil |
Cretaceous |
cephalopod |
|
Sphenodiscus |
fossil |
Cretaceous |
cephalopod |
|
Sphenodiscus |
fossil |
Cretaceous |
cephalopod |
 |
Sphenonectris |
cast of head |
Devonian |
fish |
|
Spinosaurus |
cast of tooth |
Cretaceous |
dinosaur |
|
Spirifer |
fossil |
Jurassic |
brachiopod |
|
Sporadoceras |
fossil |
Devonian |
cephalopod |
 |
Spriggina floundersi |
cast |
PreCambrian |
segmented worm |
 |
Strepsodus |
cast of jaw |
Mississippian |
fish |
|
Streptelasma |
fossil |
Ordovician |
coral |
|
Struthiocephalus |
cast of skull |
Permian |
mammal-like reptile |
 |
Subperrinites bakeri |
fossil |
Permian |
cephalopod |
|
Sumina getmanovi |
cast of skull and skeleton |
Permian |
mammal-like reptile |
|
Sycosaurus |
cast of skull and jaw |
Permian |
mammal-like reptile |
 |
Syntomocrinus |
fossil |
Permian |
echinoderm |
|
Syrdenites stoyanowi |
fossil |
Permian |
cephalopod |
