A New Species of Saurolophine Hadrosaurid Dinosaur from the Late Cretaceous of the Pacific Coast of North America

  title={A New Species of Saurolophine Hadrosaurid Dinosaur from the Late Cretaceous of the Pacific Coast of North America},
  author={Albert Prieto-m{\'A}rquez and Jonathan R. Wagner},
We describe and re-evaluate the systematics of specimens from the Maastrichtian Moreno Formation of California (western USA) as a new species of Saurolophus, the only known genus of hadrosaurid dinosaur widespread in Asia and North America. Recognition of this new species adds substantially to the record of the taxonomic diversity of these animals west of the Rocky Mountains. The new species, Saurolophus morrisi, is diagnosed by the possession of a postorbital having ornamentation in form of… 
Review of the taxonomic affinities of Latirhinus uitstlani, an emblematic Mexican hadrosaurid
Abstract This work presents a detailed study of the bones from the holotype of Latirhinus uitstlani. A Mexican hadrosaurid species known informally as “Isauria”, discovered by Don Ramon Lopez, from
The late-surviving ‘duck-billed’ dinosaur Augustynolophus from the upper Maastrichtian of western North America and crest evolution in Saurolophini
Abstract We amend the taxonomy and provide new anatomical information on the hadrosaurid dinosaur Saurolophus morrisi (upper Maastrichtian Moreno Formation, central California, USA) derived from full
A re-examination of Psittacosaurus lujiatunensis using modern techniques
This dissertation examines a small monospecific deposit that includes a large Psittacosaurus specimen and twenty-four juveniles, and describes it using osteological, histologic, and taphonomic methods to elucidate morphological and microstructural changes that occur during PsITTacosaurus ontogeny as well as determine the burial history of the deposit.
Craniodental and Postcranial Characters of Non-Avian Dinosauria Often Imply Different Trees
It is found that incongruence is not uniformly distributed across major dinosaur clades, being highest in Theropoda and lowest in Thyreophora, and new tests to determine which partition yields trees most similar to those from the entire matrix are implemented, suggesting that those partitions yield more accurate trees.
Trends in embryonic and ontogenetic growth metabolisms in nonavian dinosaurs and extant birds, mammals, and crocodylians with implications for dinosaur egg incubation.
  • Scott Lee
  • Medicine, Biology
    Physical review. E
  • 2019
Embryonic and ontogenetic growth metabolisms are evaluated for extant altricial birds, precocial birds, mammals, and crocodylians to examine for trends in the different groups of animals and to provide a context for interpreting the results for nonavian dinosaurs.


Revision of the status of Saurolophus (Hadrosauridae) from California, USA
The occurrence of Saurolophus from the Moreno Formation (late Maastrichtian) of California is investigated and an incomplete, poorly preserved, skull (LACM/CIT 2852) is described. The skull lacks the
New Unadorned Hadrosaurine Hadrosaurid (Dinosauria, Ornithopoda) from the Campanian of North America
Combining stratigraphic and phylogenetic data from Acristavus yields support for the hypothesis that the hadrosaurid ancestor did not possess cranial ornamentation, and that the subfamilies Hadrosaurinae and Lambeosaurinee each independently developed display structures.
Global historical biogeography of hadrosaurid dinosaurs
Hadrosaurids were the most derived ornithopods and amongst the most diverse herbivore dinosaurs during the Late Cretaceous of Europe, Asia, and the two Americas. Here, their biogeographical history
Redescription of the skull of Saurolophus osborni Brown 1912 (Ornithischia: Hadrosauridae)
Abstract A detailed redescription of the skull of the hadrosaurine Saurolophus osborni based on the three known specimens of this taxon, elucidates for the first time several important aspects of the
Pararhabdodon Isonensis and Tsintaosaurus Spinorhinus: A New Clade of Lambeosaurine Hadrosaurids from Eurasia
New anatomical information is presented showing that Koutalisaurus kohlerorum, from the Maastrichtian of Lleida Province, northeastern Spain, is most probably the junior synonym of Pararhabdodon isonensis from the same region, providing conclusive evidence of the presence of the Lambeosaurinae in Europe.
A re-appraisal of Aralosaurus tuberiferus (Dinosauria, Hadrosauridae) from the Late Cretaceous of Kazakhstan
Aralosaurus tuberiferus ROZHDESTVENSKY, 1968 (Dinosauria: Hadrosauridae) is based on a fragmentary skull from the Beleutinskaya Svita (?Turonian, Late Cretaceous) from the Sakh-Sakh locality of
In 2001, a large hadrosaurine preserving extensive cranial and post-cranial material (PASAC-1) was discovered in an excavation in the Sabinas Basin near the town of Sabinas, Coahuila, Mexico. The
Global phylogeny of Hadrosauridae (Dinosauria: Ornithopoda) using parsimony and Bayesian methods
Parsimony and Bayesian methods were implemented to elucidate the phylogenetic relationships of all hadrosaurid species, and Hadrosauridae was redefined as the clade stemming from the most recent common ancestor of Hadrosaurus foulkii and Parasaurolophus walkeri.
Duck-billed dinosaurs, or hadrosaurs, rank among the most unique, specialized, and successful dinosaur groups. They are known from localities throughout the Northern Hemisphere, predominately in
Late Maastrichtian paleoenvironments and dinosaur biogeography in the western interior of North America
During Late Maastrichtian time, three major sedimentary depositional provinces existed in continental environments of the western interior region of North America. The sediments accumulated within