Tapinocaninus cast of skull and jaw Permian mammal-like reptile
Taramelliceras fossil Jurassic cephalopod
Tegulorhynchia fossil Tertiary brachiopod
Terebratalia fossil Tertiary brachiopod
Terebratula fossil Jurassic brachiopod
Tetonius matthewi holotype of left mandible (cast) Tertiary primate
Tetragraptus fossil Ordovician graptolite
Tetraornis cast of skull Quaternary bird
Thalassina fossil Quaternary arthropod
Thalassoceras fossil Permian cephalopod
Thoosuchus yakolevi cast of skull Triassic amphibian
Therezinosaurus cast of killer claw Cretaceous dinosaur
Theriognathus cast of skull Permian mammal-like reptile
Thrinaxodon cast of skull and jaw Triassic mammal-like reptile
Tiktaalik cast of head and fin Devonian fish
Timorechinus fossil Permian echinoderm
Timorites curvicostatus fossil Permian cephalopod
Tissotia obesa fossil Cretaceous cephalopod
Tranodis castrensis cast of skull Mississippian fish
Trematsapis fossil skull Silurian fish
Triassochelys quenstedi cast of skull Triassic reptile
Trybliocrinus flatheanus fossil Devonian echinoderm
Tribranchidium hearaldicum cast PreCambrian echinoderm
Triceratops horridus cast of tooth Cretaceous dinosaur
Trigonia fossil Cretaceous bivalve
Trimerorhachis cast of skull Permian amphibian
Trimerorhachis insignis cast of skull Permian amphibian
Trirachodon cast of skull and jaw Triassic mammal-like reptile
Tristichopterus alatus cast of whole fish Devonian fish
Triticities plummeri fossil Pernian eukaryote
Tritylodon cast of skull Jurassic mammal-like reptile
Troodon cast of brain Cretaceous dinosaur
Tylosaurus proriger cast of jaw Cretaceous reptile
Tyrannosaurus rex cast of tooth Cretaceous dinosaur
Uddenites fossil Pennsylvanian cephalopod
Uddenites schucherti fossil Pennsylvanian cephalopod
Ussurites fossil Triassic cephalopod
Velociraptor cast of skull and killer claw Cretaceous dinosaur
Vidrioceras fossil Permian cephalopod
Vinctifer cast of whole fish Cretaceous fish
Virgoceras fossil Silurian cephalopod
Waagenoceras fossil Permian cephalopod
Whatcheeria deltae photo of fossil Mississippian amphibian
Whatcheeria deltae photo of fossil Mississippian amphibian
Whatcheeria deltae photo of fossil Mississippian amphibian
Whatcheeria deltae photo of fossil Mississippian amphibian
Wanneria fossil Cambrian arthropod
Wasatchia cast of left mandible Tertiary mammal
Xenaspis fossil Permian cephalopod
Xenaspis fossil Permian cephalopod
Xenaspis fossil Permian cephalopod
Xenodiscus fossil Permian cephalopod
Xenodiscus besairie fossil Permian cephalopod
Xenodiscus fossil Permian cephalopod
Xenthorhysis tabrumi cast of jaw Tertiary primate
Xiphactinus audax cast of head Cretaceous fish
Yabeina fossil Permian eukaryote
Yanoconodon allini sculpture of skeleton Cretaceous mammal
Zatrachys cast of skull Permian amphibian
Zetoceras fossil Jurassic cephalopod
Zetoceras fossil Jurassic cephalopod
Zygorhiza cast of skull Tertiary mammal