Adeopapposaurus (/”AD-ee-oh-pap-oh-SAWR-us”/; “far-eating lizard”) is a genus of early sauropodomorph dinosaur that lived during the Early Jurassic period, approximately 200 to 190 million years ago. Its fossils were discovered in the San Juan Province of Argentina. The name refers to its long neck, which likely helped it reach high vegetation. Adeopapposaurus was first scientifically described […]
Aegyptosaurus (ee-JIPT-oh-SORE-us; “Egyptian lizard”) is a genus of titanosaurian sauropod dinosaur that lived during the Late Cretaceous period, approximately 95 million years ago (Cenomanian stage). Its fossils have been discovered in North Africa, primarily in Egypt and Niger. The name Aegyptosaurus refers to Egypt, the country where its first remains were found. German paleontologist Ernst
Aeolosaurus (/”EE-oh-lo-SAWR-us”/; “Aeolus’ lizard”) is a genus of titanosaurian sauropod dinosaur that lived during the Late Cretaceous period, approximately 83 to 70 million years ago (Campanian to Maastrichtian stages). Fossils of Aeolosaurus have been discovered in South America, primarily in Argentina and Brazil. The name “Aeolosaurus” refers to Aeolus, the Greek god of the winds,
Aepisaurus (/”EE-pee-SAWR-us”/; “lofty lizard” or “high lizard”) is a genus of sauropod dinosaur that lived during the Early Cretaceous period, approximately 100 to 105 million years ago, in what is now southern France. The genus was named and described by French paleontologist Paul Gervais in 1852 based on a single fossil bone. The name comes
Aerosteon (/”AIR-oh-STEE-on”/; “air bone”) is a genus of megaraptoran theropod dinosaur that lived during the Late Cretaceous period, specifically the Santonian stage, about 84 million years ago. Its fossils were discovered in the Anacleto Formation in Mendoza Province, Argentina. The name Aerosteon, meaning “air bone,” refers to the numerous air-filled spaces within its bones, a
Aetonyx (ay-ee-TOE-nix; “eagle claw”) is a name given to a type of saurischian dinosaur that lived during the Early Jurassic period, roughly 201 to 183 million years ago. Its fossils were discovered in what is now South Africa. The name Aetonyx comes from Greek words: “aetos” meaning “eagle” and “onyx” meaning “claw,” referring to a
Afrovenator Afrovenator (AF-roh-ven-AH-tor; “African hunter”) is a genus of megalosaurid theropod dinosaur that roamed what is now North Africa during the Middle Jurassic period, approximately 167 to 161 million years ago. The name Afrovenator means “African hunter,” reflecting its predatory nature and the continent where its fossils were found. Its discovery in Niger in 1993
Agathaumas Agathaumas (AG-ah-THAW-mus; “Great Wonder”) is a genus of large ceratopsian dinosaur from the Late Cretaceous Period, living approximately 66 million years ago in what is now Wyoming, USA. The name was given by paleontologist Edward Drinker Cope in 1872, based on very large but incomplete fossil remains discovered earlier that year by Fielding Bradford
Agilisaurus Agilisaurus (AJ-ih-lih-SAWR-us; “Agile lizard”) is a genus of small, plant-eating ornithischian dinosaur that lived during the Middle Jurassic period, approximately 168 to 161 million years ago. Its fossils were discovered in what is now Sichuan Province, China. The dinosaur was named by paleontologist Peng Guangzhao in 1990. The name Agilisaurus was chosen because its
Agnosphitys (ag-NOS-fih-tiss; “unknown lineage”) is a genus of archosaur, possibly an early dinosaur or a close relative, that lived during the Late Triassic period, around 205 to 200 million years ago. Its fossils were discovered in Somerset, England. The name Agnosphitys refers to the uncertainty paleontologists have had about its exact place in the reptile
