Alamosaurus (AL-uh-mo-SAWR-us; “Ojo Alamo lizard”) is a genus of titanosaurian sauropod dinosaur that roamed what is now southwestern North America during the Late Cretaceous period, approximately 70 to 66 million years ago. Its name refers to the Ojo Alamo Formation in New Mexico where its first fossils were discovered by paleontologist John B. Reeside Jr. […]
Alaskacephale (uh-LASS-kuh-SEF-uh-lee; “Alaska head”) is a genus of pachycephalosaurid dinosaur that lived during the Late Cretaceous period, approximately 70 to 69 million years ago. Its fossils were discovered in the Prince Creek Formation of Alaska, USA. The name refers to the location of its discovery and the characteristic thickened skull common to its group, derived
Albalophosaurus (AL-buh-LOAF-oh-SAWR-us; “white crest lizard”) is a genus of small, herbivorous cerapodan dinosaur that lived during the Early Cretaceous period, approximately 130 to 125 million years ago. Its fossils were discovered in central Japan, in the Kuwajima Formation. The name refers to “white crest” after the nearby snow-capped Mount Hakusan, and “saurus” meaning lizard. Albalophosaurus
Albertaceratops (al-BERT-uh-SARE-uh-tops; “Alberta horned face”) is a genus of centrosaurine ceratopsid dinosaur that lived during the Late Cretaceous period, around 77.5 million years ago. Its fossils were discovered in the Oldman Formation of Alberta, Canada, which inspired its name. Albertaceratops was first named and described by paleontologist Michael J. Ryan in 2007 based on a
Alvarezsaurus (AL-vahr-ez-SAWR-us; “Alvarez’s lizard”) is a genus of small alvarezsaurid theropod dinosaur that lived during the Late Cretaceous period, approximately 86 to 83 million years ago (Campanian stage), in what is now Argentina. The name honors the historian Don Gregorio Alvarez, who was from the Neuquén Province where the fossils were found. Alvarezsaurus was first
