described as transitional between the earlier Lambeosaurus and later Hypacrosaurus. Hypacrosaurus was a lambeosaurine hadrosaurid, and has been recognized as such...

lambeosaurine, thus related to Lambeosaurus, Nipponosaurus, Velafrons, Hypacrosaurus, and Olorotitan. Corythosaurus has an estimated length of 7.7–9 metres...

found in slightly older rocks, as well as the less well-known genera Hypacrosaurus and Olorotitan. All had unusual crests, which are now generally assumed...

(Parasaurolophus, Charonosaurus, others (?).) and Lambeosaurini (Corythosaurus, Hypacrosaurus, Lambeosaurus, others.). Corythosaurini (synonym of Lambeosaurini, see...

form in between Lambeosaurus and Hypacrosaurus; in 1994 he would name it Hypacrosaurus stebingeri. Today, Hypacrosaurus stebingeri is no longer seen as...

occurred at different times in the growth of different species; in Hypacrosaurus stebingeri it did not occur until a nearly adult stage, whereas in a...

the Saurolophinae. At the time, this also included Corythosaurus and Hypacrosaurus, the only well-known examples of what would become the Lambeosaurinae...

of hadrosaurids, referable to the genus Hypacrosaurus, coexisted with Maiasaura for some time, as Hypacrosaurus remains have been found lower in the Two...

younger Hypacrosaurus altispinus-Saurolophus osborni zone. This period is typified by the presence of the hadrosaurids Saurolophus and Hypacrosaurus, in addition...

permanently hinder plant growth. Animals such as the Chasmosaurus, Hypacrosaurus, Troodon, and Edmontosaurus may have all migrated north to take advantage...

species of Lambeosaurus, suggested it could instead be a species of Hypacrosaurus, or questioned its validity. In 2012 it was named as a separate genus...

also been reported for both of these fossils, along with a specimen of Hypacrosaurus. In 2015, Sergio Bertazzo and colleagues reported the preservation of...

Dinosaur Provincial Park. Some of the specimens, from left to right, are Hypacrosaurus, Edmontosaurus, Lambeosaurus, Gorgosaurus (both in the background),...

the lambeosaurines, distinct from the helmet-crested Corythosaurus, Hypacrosaurus, and Lambeosaurus. Its closest known relative appears to be Charonosaurus...

"Hypacrosaurus" stebingeri...

them. However, these were later determined to be juvenile forms of Hypacrosaurus, Corythosaurus and Lambeosaurus, and not distinct species. For the remainder...

"Hypacrosaurus" stebingeri...

Formation (Montana, United States) preserving remains of specimens of Hypacrosaurus stebingeri is published by Joubarne, Therrien & Zelenitsky (2024), who...

Arrhinoceratops, Atrociraptor, Epichirostenotes, Edmontonia, Edmontosaurus, Hypacrosaurus, Ornithomimus, Pachyrhinosaurus, Parksosaurus, Saurolophus, and Struthiomimus...

dinosaur eggs, believed to have come from a Hadrosaur, specifically a Hypacrosaurus were found at Devil's Coulee site. These were not the first fossils...

Charonosaurus Parasaurolophus Tlatolophus Lambeosaurini Amurosaurus Corythosaurus Hypacrosaurus Lambeosaurus Magnapaulia Olorotitan Sahaliyania Velafrons...

cerebral volume was only 30% in Amurosaurus, significantly lower than in Hypacrosaurus, closer to that of theropods like Tyrannosaurus, though still distinctly...

Velafrons coahuilensis Hypacrosaurus altispinus Hypacrosaurus stebingeri Olorotitan arharensis Corythosaurus casuarius...

America, while lambeosaurines were rare, consisting of a few species like Hypacrosaurus, and albertosaurines and centrosaurines had gone extinct. However, in...

ovatus included the basal ornithopod Orodromeus, hadrosaurids (such as Hypacrosaurus, Maiasaura, and Prosaurolophus), the centrosaurines Brachyceratops and...

Charonosaurus Parasaurolophus Tlatolophus Lambeosaurini Amurosaurus Corythosaurus Hypacrosaurus Lambeosaurus Magnapaulia Olorotitan Sahaliyania Velafrons...

Charonosaurus Parasaurolophus Tlatolophus Lambeosaurini Amurosaurus Corythosaurus Hypacrosaurus Lambeosaurus Magnapaulia Olorotitan Sahaliyania Velafrons...

Charonosaurus Parasaurolophus Tlatolophus Lambeosaurini Amurosaurus Corythosaurus Hypacrosaurus Lambeosaurus Magnapaulia Olorotitan Sahaliyania Velafrons...

Charonosaurus Parasaurolophus Tlatolophus Lambeosaurini Amurosaurus Corythosaurus Hypacrosaurus Lambeosaurus Magnapaulia Olorotitan Sahaliyania Velafrons...

ornithopod Parksosaurus warreni, the hadrosaurids Edmontosaurus regalis, Hypacrosaurus altispinus, and Saurolophus osborni, the ceratopsians Anchiceratops...