Explore cataloged non-avian dinosaurs of the Mesozoic Era. Each entry features verified anatomical dimensions, geological horizons, dietary classifications, and museum holotype provenance.
PachycephalosauriaPrenocephale prenes Maryańska & Osmólska, 1974
A complete, high-domed pachycephalosaur from the Late Cretaceous Nemegt Basin of Mongolia.
CeratopsiaProtoceratops andrewsi Granger & Gregory, 1923
A sheep-sized, hornless horned dinosaur that roamed the sand dunes of the Late Cretaceous Gobi Desert.
CeratopsiaPsittacosaurus mongoliensis Osborn, 1923
The 'parrot lizard', a prolific basal ceratopsian known for its high-crowned beak and tail bristles.
SauropodomorphaRiojasaurus incertus Bonaparte, 1969
A heavy, quadrupedal Late Triassic sauropodomorph from Argentina with dense limb bones.
SauropodomorphaShunosaurus lii Dong et al., 1983
A Middle Jurassic sauropod from China equipped with a defensive bony club and spikes on the tip of its tail.
TheropodaSinornithosaurus millenii Xu et al., 1999
A feathered basal dromaeosaurid from China with remarkable cranial and dental specializations.
TheropodaSinraptor dongi Currie & Zhao, 1993
A large, agile metricanthosaurid theropod that was an apex predator of Late Jurassic China.
Featured SpecimenTheropodaSpinosaurus aegyptiacus Stromer, 1915
A giant sail-backed theropod possessing anatomical specializations associated with riparian ecosystems, with its aquatic locomotion subject to ongoing scientific debate.
TheropodaStaurikosaurus pricei Colbert, 1970
An early predatory dinosaur from the Late Triassic Santa Maria Formation of Brazil, often placed within Herrerasauridae with debated phylogenetic affinities.
PachycephalosauriaStegoceras validum Lambe, 1902
A small, bipedal pachycephalosaur from Alberta featuring an extremely thick, solid skull dome.
Featured SpecimenStegosauriaStegosaurus stenops Marsh, 1887
An iconic armored herbivore of the Late Jurassic with two alternating rows of vertical dorsal plates and a four-spiked tail thagomizer.
TheropodaStruthiomimus altus Lambe, 1902
An agile, ostrich-mimic theropod that sprinted across Late Cretaceous western North America.
CeratopsiaStyracosaurus albertensis Lambe, 1913
A dramatic centrosaurine ceratopsian of Late Cretaceous Canada bearing a single long nasal horn and six long frill spikes.
TheropodaSuchomimus tenerensis Sereno et al., 1998
A massive spinosaurid predator with crocodile-like jaws and a low dorsal sail that stalked Cretaceous Niger.
TheropodaTarbosaurus bataar Maleev, 1955
The Asian sister taxon to T. rex, an apex tyrannosaurid macropredator of the Late Cretaceous Nemegt Basin.
OrnithopodaTenontosaurus tilletti Ostrom, 1970
A muscular Early Cretaceous ornithopod with an exceptionally long, deep tail, famous as the prey of Deinonychus.
SauropodomorphaThecodontosaurus antiquus Morris, 1843
One of the earliest dinosaurs ever named, an agile small herbivore from the Late Triassic fissure fills of southwestern Britain.
Featured SpecimenTheropodaTherizinosaurus cheloniformis Maleev, 1954
A bizarre herbivorous theropod of Late Cretaceous Mongolia bearing the longest claws of any known animal—up to 1 meter in length.
CeratopsiaTorosaurus latus Marsh, 1891
A Late Cretaceous ceratopsid that possessed one of the largest and longest skulls of any land animal in history.
TheropodaTorvosaurus tanneri Galton & Jensen, 1979
A gigantic, heavily built megalosaurid macropredator, among the largest terrestrial carnivores of the Jurassic Period.
Featured SpecimenCeratopsiaTriceratops horridus Marsh, 1889
A colossal three-horned ceratopsian dinosaur of the Late Cretaceous with a solid parietal-squamosal bone frill.
TheropodaTroodon formosus Leidy, 1856
A small, large-brained Late Cretaceous theropod with acute stereoscopic vision and large eyes.
StegosauriaTuojiangosaurus multispinus Dong et al., 1977
A large, iconic Late Jurassic Chinese stegosaur with tall pointed plates and sharp tail thagomizers.
Featured SpecimenTheropodaTyrannosaurus rex Osborn, 1905
The apex macropredator of Late Cretaceous western North America, possessing bone-crushing jaws and acute stereoscopic vision.