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
Aetonyx 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
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
“`html Agilisaurus: Profile of a Prehistoric Giant 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.
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
Agnosphitys: Profile of a Late Triassic Archosaur Agnosphitys 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
Agrosaurus (AG-roh-SAWR-us; “field lizard”) is a genus of herbivorous dinosaur whose classification has been a subject of much scientific debate. Originally thought to have lived during the Early Jurassic period in Australia, the fossils attributed to Agrosaurus are now believed by many paleontologists to have come from England and likely belong to a different, already
