Unaysaurus: Profile of a Prehistoric Giant Unaysaurus Unaysaurus (oo-NAI-sore-us; “black water lizard”) is a genus of basal sauropodomorph dinosaur that lived during the Late Triassic period, approximately 225 to 210 million years ago, in what is now southern Brazil. The name Unaysaurus comes from the Tupi language word “unay” (meaning “black water”) and the Greek […]
Unenlagia: The Half-Bird Dinosaur of Patagonia Unenlagia Unenlagia (OO-nen-LAH-ghee-ah; “Half-bird”) is a genus of bird-like theropod dinosaur that lived during the Late Cretaceous period, approximately 90 million years ago. Its fossilized remains were discovered in the Patagonia region of Argentina, South America. The name Unenlagia comes from the local Mapudungun language, with “uñen” meaning half
Unescoceratops: Profile of a Small Horned Dinosaur Unescoceratops Unescoceratops (YOO-nes-koh-SEH-rah-tops; “UNESCO horn face”) is a genus of leptoceratopsid ceratopsian dinosaur that lived during the Late Cretaceous period, approximately 76.5 to 75 million years ago. Its fossils were discovered in the Dinosaur Park Formation of Alberta, Canada. The name Unescoceratops honors the United Nations Educational, Scientific
Unquillosaurus Unquillosaurus (oon-KIL-oh-SAWR-us; “Unquillo River lizard”) is a genus of theropod dinosaur that lived during the Late Cretaceous period, specifically the Campanian to early Maastrichtian stages (around 75 to 70 million years ago), in what is now Argentina, South America. The name refers to the Unquillo River in Salta Province, near where its only known
Urbacodon: Profile of a Prehistoric Theropod Urbacodon Urbacodon (UR-bak-oh-DON; “URBAC tooth”) is a genus of troodontid theropod dinosaur that lived during the Late Cretaceous period, about 95 million years ago, in what is now Uzbekistan. The name Urbacodon refers to “URBAC tooth,” with URBAC being an acronym for the Uzbek, Russian, British, American, and Canadian
Utahceratops Utahceratops (YOO-tah-SERRA-tops; “Utah horned face”) is a genus of chasmosaurine ceratopsid dinosaur that roamed North America during the Late Cretaceous period, specifically the late Campanian stage, about 76.4 to 75.5 million years ago. Its fossils were discovered in the Kaiparowits Formation of southern Utah, USA. The name Utahceratops reflects its discovery location and its
Utahraptor: Profile of a Prehistoric Giant Utahraptor Utahraptor (YOO-tah-RAP-tor; “Utah’s plunderer”) is a genus of large dromaeosaurid theropod dinosaur that lived during the Early Cretaceous period, approximately 135 to 130 million years ago. Its fossils were first discovered in the U.S. state of Utah, in the Cedar Mountain Formation. The name Utahraptor refers to the
Uteodon: Profile of a Prehistoric Giant Uteodon Uteodon (YOO-tee-oh-don; “Ute tooth”) Uteodon is a genus of iguanodontian ornithopod dinosaur that lived during the Late Jurassic period, about 155 to 150 million years ago, in what is now Utah, USA. The name honors the Ute people, Native Americans indigenous to the region where its fossils were
Vagaceratops: Profile of a Prehistoric Giant Vagaceratops Vagaceratops (VAY-gah-SEHR-uh-tops; “Wandering Horned Face”) is a genus of chasmosaurine ceratopsid dinosaur that lived during the Late Cretaceous period, approximately 75 to 74 million years ago, in what is now Alberta, Canada. The name comes from the Latin word “vagus” (wandering) and the Greek “ceratops” (horned face), reflecting
Vahiny: Profile of a Prehistoric Giant Vahiny Vahiny (vah-HEE-nee; “Traveler”) is a genus of titanosaurian sauropod dinosaur that lived during the Late Cretaceous period, specifically the Maastrichtian stage, about 70 to 66 million years ago, in what is now Madagascar. The name Vahiny means “traveler” or “wanderer” in the Malagasy language. This name was chosen
