Sabalites
Sacabambaspis
Sacuanjoche
Sahelanthropus
Saichania
Saltasaurus
Saltoposuchus
Saltopus
Sanctacaris
Sanmartinoceras
Sarcosuchus
Sassafras
Saukiella
Sardinioides
Saurichthys
Sauroctonus
Saurolophus
Sauroniops
Sauropelta
Sauropod dinosaur
Sauroposeidon
Saurornithoides
Saurornitholestes
Scapanorhynchus
Scaphiocrinus
Scaphites
Scaphognathus
Scaponyx
Scatophagus
Scelidosaurus
Scelidotherium
Schizoneura
Schloenbachia
Schlotheimia
Schwagerina
Scipionyx
Sclerocephalus
Scleromochlus
Scolosaurus
Scutella
Scutellosaurus
Scutosaurus
Scyliorhinus
Seeleya
Segisaurus
Segnosaurus
Seirocrinus
Seismosaurus
Selenopeltis
Serendipaceratops
Serranus
Seymouria
Shansisuchus
Shantungosaurus
Sharovipteryx
Shastasaurus
Shonisaurus
Shunosaurus
Siamosaurus
Siamotyrannus
Siats
Sieberella
Sigillaria
Silvianthemum
Silvisaurus
Similicaudipteryx
Sinanthropus
Sinoceratops
Sinomegaceros
Sinopa
Sinopterus
Sinornis
Sinornithoides
Sinornithosaurus
Sinosauropteryx
Sinosaurus
Sinraptor
Siphonocrinus
Sivapithecus
Sivatherium
Skirroceras
Smerdis
Smilodectes
Smilodon
Solaster
Somalirhynchia
Sordes
Spaniodon
Sparnodus
Sparus
Spathobathis
Sphaeocoryphe
Sphaerexochus
Sphenacanthus
Sphenacodon
Sphenopteris
Sphyrna
Sphyraenodus
Spinax
Spinophorosaurus
Spinops
Spinosaurus
Spiriferidae
Spirocerus
Spirophyton
Sporadoceras
Spriggina
Squalicorax
Squaloraja
Stachypteris
Staurikosaurus
Stegoceras
Stegodon
Stegomastodon
Stegosaurus
Stegotetrabelodon
Stenaster
Steneosaurus
Stenomylus
Stenonychosaurus
Stenopelix
Stenopterygius
Stephanoceras
Stephanorhinus
Stethacanthus
Sthenurus
Stilbocrocis
Stratodus
Stromatolites
Strophodus
Struthio
Struthiomimus
Struthiosaurus
Stygimoloch
Stylinodon
Styracosaurus
Styxosaurus
Suchomimus
Supersaurus
Supersaurus
Suevoleviatan
Sycorax
Sylviornis
Syndyoceras
Syntarsus
Synthetoceras
Syringopora
Szechuanosaurus
Taeniopteris
Talarurus
Taniwhasaurus
Tanystropheus
Tapejara
Tapinocephalus
Tapirus
Taprognathus
Taramelliceras
Tarbosaurus
Tarrasius
Taxaceoxylon
Tazoudasaurus
Tchadanthropus
Teleoceras
Teleosaurus
Telmatosaurus
Teloceras
Temnodontosaurus
Tenontosaurus
Teratornis
Teratosaurus
Terebratula
Terminonaris
Testudinites
Tetheopsis
Tetralophodon
Texanites
Thadeosaurus
Thadeosaurus
Thalassiodracon
Thalassocnus
Thalassodromeus
Thalattoarchon
Thaumatocrinus
Thaumatosaurus
Thecodontosaurus
Theriosuchus
Therizinosaurus
Theropithecus
Thescelosaurus
Thoatherium
Thoracosaurus
Thrinaxodon
Thyestes
Thylacoleo
Thylacosmilus
Tianchisaurus
Tianyulong
Tibia
Tiktaalik
Timimus
Tinca
Tingia
Titanis
Titanoboa
Titanocetus
Titanohyrax
Titanosaurus
Titanotylapus
Todites
Tommotia
Tongtianlong
Torosaurus
Torvosaurus
Toxodon
Tragocerus
Trachodon
Trachyceras
Tranatocetus
Tremacebus
Triadobatrachus
Tribodus
Tribrachidium
Triceratops
Trigonia
Trilophosaurus
Trimerorachis
Trinacromerum
Trinucleus
Trilobite
Trionyx
Triplagnostus
Tristychius
Tritylodon
Trogontherium
Troodon
Tropeognathus
Tropidodiscus
Tsinania
Tsintaosaurus
Tullimonstrum
Tuojiangosaurus
Tupandactylus
Tupuxuara
Turiasaurus
Turritella
Turrilites
Tusoteuthis
Tylocidaris
Tylosaurus
Tyrannosaurus
Tyrannotitan
Tytthostonyx
Udanoceratops
Ugrunaaluk
Uintatherium
Ultrasauros
Ultrasaurus
Uptonia
Urosphen
Ursus
Utahceratops
Utahraptor
Utatsusaurus
Vampyronassa
Varanosaurus
Varnerxiphactinus
Velociraptor
Ventastega
Vexillum
Vinctifer
Vini
Vinialesaurus
Virgatosphinctes
Virgotrigonia
Vitirallus
Viverra
Viviparus
Vogelgnathus
Voltzia
Voluta
Vomer
Vorombe
Vulcanodon
Vulpavus
Walliserops
Wannanosaurus
Waptia
Wellesiosaurus
Weygoldtina
Williamsonia
Willo
Wiwaxia
Wood, petrified
Woolungasaurus
Wuerhosaurus
Xenacanthus
Xenopus
Xenosmilus
Xiaosaurus
Xiphactinus
Yandusaurus
Yangchuanosaurus
Yaverlandia
Yingchuanosaurus
Yorgia
Yoldia
Youngina
Yunnanolepis
Yunnanosaurus
Yutyrannus
Zalambdalestes
Zambiasaurus
Zelkova
Zephyrosaurus
Zhejianopterus
Zhenyuanopterus
Zhenyuanlong
Zhongyuansaurus
Zhuchengtyrannus
Zinjanthropus
Zuniceratops
Zygomaturus
Zygophyseter
Zygorhiza
