Amygdalodon: Profile of a Prehistoric Giant Amygdalodon Amygdalodon (Ah-MIG-dah-loh-don; “Almond Tooth”) is a genus of sauropod dinosaur that lived during the Middle Jurassic period, approximately 170 to 165 million years ago. Its fossils were discovered in the Cerro Carnerero Formation in Chubut Province, Patagonia, Argentina. The name Amygdalodon refers to the almond shape of its […]
Anabisetia: Profile of a Swift Cretaceous Herbivore Anabisetia Anabisetia (AH-nah-bee-SEH-tee-ah; “for Ana Biset”) is a genus of small ornithopod dinosaur that lived during the Late Cretaceous period, approximately 95 to 92 million years ago. Its fossils were discovered in the Rio Negro Province of Patagonia, Argentina. The name Anabisetia honors Ana Biset, a notable archaeologist
Anasazisaurus Anasazisaurus (AH-nah-SAH-zee-SAWR-us; “Anasazi lizard”) is a genus of hadrosaurid, or duck-billed dinosaur, that lived during the Late Cretaceous period, about 74 million years ago. Its fossils were discovered in what is now New Mexico, USA. The name Anasazisaurus refers to the ancient Anasazi people (Ancestral Puebloans) who once inhabited the region where the dinosaur’s
Anatosaurus: Profile of a Prehistoric Giant Anatosaurus Anatosaurus (uh-NAT-oh-SAWR-us; “Duck Lizard”) is a genus of hadrosaurid, or “duck-billed,” dinosaur that lived during the Late Cretaceous period, approximately 68 to 66 million years ago. Its fossils have been found in North America. The name Anatosaurus refers to its broad, flat snout, which resembled the bill of
Anatotitan Anatotitan (an-NAY-toh-TY-tan; “giant duck”) is a genus of very large hadrosaurid (duck-billed) dinosaur that lived during the Late Cretaceous period, approximately 68 to 66 million years ago, in what is now western North America. The name reflects its impressive size and the characteristic broad, flat snout resembling a duck’s bill. While historically considered a
Anchiceratops: Profile of a Prehistoric Giant Anchiceratops Anchiceratops (AN-kee-SEHR-uh-tops; “Near Horned Face”) is a genus of chasmosaurine ceratopsid dinosaur that lived during the Late Cretaceous period, approximately 72 to 71 million years ago. Its fossils have been discovered in what is now Alberta, Canada. The name Anchiceratops, meaning “near horned face,” was given by paleontologist
Anchiornis Anchiornis (an-kee-OR-niss; “near bird”) is a genus of small, four-winged paravian theropod dinosaur that lived during the Late Jurassic period, approximately 161 to 160 million years ago. Its exceptionally well-preserved fossils, discovered in the Tiaojishan Formation of Liaoning Province, China, have provided remarkable insights into early feather evolution and bird origins. The name Anchiornis,
Anchisaurus: Profile of a Prehistoric Giant Anchisaurus Anchisaurus (AN-kee-SAWR-us; “Near Lizard”) is a genus of early sauropodomorph dinosaur that lived during the Early Jurassic period, about 200 to 190 million years ago. Its fossils have primarily been found in the Connecticut River Valley of North America. The name, given by paleontologist Othniel Charles Marsh in
Anchisaurus (AN-kee-SAWR-us; “Near Lizard”) is a genus of early sauropodomorph dinosaur that lived during the Early Jurassic period, about 200 to 190 million years ago. Its fossils have primarily been found in the Connecticut River Valley of North America. The name, given by paleontologist Othniel Charles Marsh in 1885, reflects his view that it was
Andesaurus: Profile of a Prehistoric Giant Andesaurus Andesaurus (AN-dee-SAWR-us; “Andes Lizard”) is a genus of titanosaurian sauropod dinosaur that lived during the early part of the Late Cretaceous period, about 99 to 97 million years ago. Its fossils were discovered in the Patagonia region of Argentina, South America, near the Andes Mountains, which inspired its
