Aardonyx (/ahr-DON-iks/; “Earth claw”) is a genus of basal sauropodomorph dinosaur that lived during the Early Jurassic period, approximately 199 to 191 million years ago, in what is now South Africa. The name Aardonyx means “Earth claw,” likely referring to its strong claws and ground-dwelling nature. Aardonyx is an important dinosaur because it helps scientists […]
Abelisaurus (“AH-beh-lih-SAWR-us”/; “Abel’s lizard” ) in honor of Roberto Abel who discovered the type specimen and was director of the Argentinian museum housing it, is a genus of predatory theropod dinosaur. It belongs to the Abelisauridae family and roamed what is now South America during the Late Cretaceous period, specifically between 83 and 80 million years ago.
Abrictosaurus (/\”ab-RIC-to-SAWR-us\”/; \”waking lizard\”) is a genus of heterodontosaurid dinosaur from the Early Jurassic period (Hettangian to Sinemurian stages), approximately 200 to 190 million years ago. It lived in what is now southern Africa. The name Abrictosaurus comes from the Greek words “abrictos” meaning “awake” (or not sleeping) and “sauros” meaning “lizard.” This refers to the
Abrosaurus (/”AB-roh-SAWR-us”/; “delicate lizard”) is a genus of macronarian sauropod dinosaur that lived during the Middle Jurassic period, approximately 168 to 161 million years ago. Its fossils were discovered in the Dashanpu Quarry in Sichuan Province, China. The name Abrosaurus comes from the Greek word “abros,” meaning “delicate,” referring to the fragile nature of its skull bones, which
Abydosaurus (/”uh-BY-doh-SAWR-us”/; “Abydos lizard”) is a genus of sauropod dinosaur that lived during the Early Cretaceous period, about 105 million years ago. Its fossils were discovered in Utah, in the United States. The name Abydosaurus refers to Abydos, an ancient Egyptian city. In Egyptian mythology, Abydos was the burial place of the head and neck
Acanthopholis (/”uh-KAN-tho-FOE-liss”/; “spine-bearing scale” or “thorny scale”) is a genus of nodosaurid ankylosaurian dinosaur that lived during the Late Cretaceous period (Cenomanian stage), approximately 100.5 to 93.9 million years ago. Its fossils have been discovered primarily in England. The name Acanthopholis refers to the bony armor, including spikes and plates, that covered its body. The genus
Achelousaurus (uh-KEE-loh-SAWR-us; “Achelous’ lizard”) is a genus of centrosaurine ceratopsian dinosaur that lived during the Late Cretaceous period, approximately 74.2 million years ago (late Campanian stage), in what is now Montana, North America. The name refers to the Greek mythological figure Achelous, a river god who could change his shape and had one of his
Achillesaurus (Uh-KILL-ee-SAWR-us; “Achilles’ lizard”) is a genus of alvarezsaurid theropod dinosaur that lived during the Late Cretaceous period (Santonian stage), approximately 86.3 to 83.6 million years ago. Its fossils were discovered in the Bajo de la Carpa Formation in RĂo Negro Province, Argentina. The name Achillesaurus refers to the dinosaur’s well-developed heel bone, which suggests
Achillobator (/uh-KILL-oh-BAY-tor/; “Achilles hero” or “Achilles warrior”) is a genus of large dromaeosaurid theropod dinosaur that lived during the Late Cretaceous period, approximately 96 to 89 million years ago, in what is now Mongolia. The name refers to the powerful Achilles tendon that would have attached to its heel, hinting at its strong leg muscles,
Acristavus (/”a-KRIS-tah-vus”/; “uncrested grandfather”) is a genus of hadrosaurid dinosaur that lived during the Late Cretaceous period, approximately 80 to 78 million years ago, in what is now North America. The first fossils of Acristavus were discovered in Montana and Utah, and the dinosaur was scientifically described in 2011. The name Acristavus comes from the
