Thecocoelurus: Profile of an Enigmatic Early Cretaceous Theropod Thecocoelurus Thecocoelurus (THEK-oh-ko-LOOR-us; “Sheathed hollow tail”) is a genus of small theropod dinosaur known from the Early Cretaceous period, specifically the Barremian stage, about 130 to 125 million years ago. Its fossils were discovered in the Wessex Formation on the Isle of Wight, England. The name Thecocoelurus […]
Thecodontosaurus: Profile of a Pioneering Sauropodomorph Thecodontosaurus Thecodontosaurus (THEEK-oh-dont-oh-SAWR-us; “socket-toothed lizard”) is a genus of early sauropodomorph dinosaur that lived during the Late Triassic period, specifically the Rhaetian stage, around 205 to 201 million years ago. Its fossils have been discovered in what is now Great Britain, particularly in the area around Bristol. First identified
Thecospondylus Thecospondylus (THEE-ko-spon-DILL-us; “Sheath vertebra”) is a genus of dinosaur that lived during the Early Cretaceous period, about 140 to 130 million years ago. Its fossils were discovered in what is now England. The name was given by the British paleontologist Harry Govier Seeley in 1882, based on a very incomplete fossil. Because the remains
Theiophytalia Theiophytalia (THEE-oh-fy-TAL-ee-ah; “Garden of the Gods”) is a genus of iguanodontian ornithopod dinosaur that lived during the Early Cretaceous period, specifically the Aptian stage, approximately 125 to 113 million years ago, in what is now Colorado, USA. The name refers to the Garden of the Gods park where its first and only known fossil,
Therizinosaurus: Profile of a Prehistoric Giant Therizinosaurus Therizinosaurus (THEH-rih-ZEE-no-SAWR-us; “Scythe lizard”) is a genus of very large therizinosaurid theropod dinosaur that lived during the Late Cretaceous period, around 70 million years ago (specifically the late Campanian to early Maastrichtian stages), in what is now Mongolia. The name comes from the Greek word “therizo,” meaning ‘to
Thescelosaurus: The Marvelous Lizard of the Late Cretaceous Thescelosaurus Thescelosaurus (THESS-kell-oh-SAWR-us; “Marvelous lizard”) is a genus of small ornithopod dinosaur that roamed western North America during the very end of the Late Cretaceous period, about 68 to 66 million years ago. Its name comes from Greek words meaning “marvelous” or “wonderful” lizard, perhaps because its
Thespesius: Profile of a Prehistoric Giant Thespesius Thespesius (THESS-pee-see-us; “Wondrous One”) is a genus of hadrosaurid, or duck-billed, dinosaur that lived during the Late Cretaceous period, approximately 70 to 66 million years ago, in what is now North America. The name was given by the famous American paleontologist Joseph Leidy in 1856 based on a
Thotobolosaurus Thotobolosaurus (THOH-toh-boh-loh-SAWR-us; “Thotobolo lizard”) is a genus of basal sauropodomorph dinosaur that lived during the Late Triassic to Early Jurassic period, approximately 208 to 200 million years ago. Its fossils were discovered in what is now Lesotho, a country in Southern Africa. The name Thotobolosaurus comes from the Thotobolo fossil site where its bones
Tianchisaurus: Profile of an Early Armored Dinosaur Tianchisaurus Tianchisaurus (TEE-ahn-chee-SAWR-us; “Heavenly Pool Lizard”) is a genus of ankylosaurid dinosaur that lived during the Middle Jurassic period, approximately 168 to 165 million years ago (Bathonian to Callovian stages), in what is now Xinjiang, China. The name refers to Tianchi, or “Heavenly Pool,” a lake in the
Tianyulong Dinosaur: Profile, Facts & Feathers – Dinos and Designs Tianyulong Tianyulong (TEE-ahn-yoo-long; “Tianyu dragon”) Tianyulong is a genus of heterodontosaurid ornithischian dinosaur that lived during the Late Jurassic period, approximately 158.5 million years ago. Its fossils were discovered in the Tiaojishan Formation of Jianchang County, Liaoning Province, China. The name Tianyulong honors the Shandong
