Denversaurus
Herbivore·Late Cretaceous·Western North America·Quadrupedal
Denversaurus is a genus of armored dinosaur belonging to the nodosaurid family, which lived in western North America during the late Maastrichtian stage of the Late Cretaceous period. Although its classification has been debated, with some considering it a synonym of Edmontonia, current research supports Denversaurus as a distinct genus, closely related to Edmontonia and Panoplosaurus.
Key Facts
- ›Denversaurus was a nodosaurid dinosaur from the late Maastrichtian of Late Cretaceous Western North America.
- ›Its type species, Denversaurus schlessmani, was named in honor of Lee E. Schlessman, a benefactor of the Denver Museum of Natural History.
- ›The holotype specimen includes a skull and body armor osteoderms, now housed at the Denver Museum of Nature and Science.
- ›Estimates place its length at around 6 meters (20 ft) and its body mass at approximately 3 tonnes (3.3 short tons).
- ›Distinguishing features include a wide rear skull and a more rearward position of the eye sockets, though crushing can affect skull proportions.
- ›Denversaurus lived alongside other well-known dinosaurs like Tyrannosaurus, Triceratops, and Edmontosaurus.
- Estimated length of 6 meters.
- Estimated body mass of 3 tonnes.
- Skull wide at the rear with eye sockets positioned more rearward.
- Possessed body armor in the form of osteoderms.
- Cranial sculpturing can be inflated and convex with visible troughs between armor elements.
Edmontonia, Panoplosaurus, Chassternbergia
United States
About Denversaurus
Denversaurus is a genus of nodosaurid dinosaur that roamed western North America during the late Maastrichtian age of the Late Cretaceous period. While some early classifications considered it a synonym of the related genus Edmontonia, contemporary research now largely recognizes Denversaurus as a distinct taxonomic entity within the Nodosauridae family.
Discovery and Naming
The type species, Denversaurus schlessmani, was formally described by paleontologist Robert Thomas Bakker in 1988. The generic name honors the Denver Museum of Natural History, where its holotype specimen, DMNH 468, is housed. This specimen, consisting of a skull and various osteoderms, was originally discovered in the lower Hell Creek Formation of South Dakota. A second potential fossil specimen, AMNH 3076 from Texas, was initially referred to Denversaurus but has since been reassigned to Edmontonia. The validity of Denversaurus was debated, with some paleontologists suggesting it was a crushed specimen of Edmontonia. However, subsequent studies, including phylogenetic analyses, have supported its status as a valid genus, closely allied with Edmontonia and Panoplosaurus.
Description and Paleoecology
Denversaurus is estimated to have been approximately 6 meters (20 feet) in length, with a body mass around 3 tonnes (3.3 short tons). Distinctive features of its skull include a wide posterior portion and more rearwardly placed eye sockets, although skull crushing can influence these proportions in fossil specimens. Like other nodosaurids, Denversaurus was covered in bony armor, or osteoderms, providing significant protection. It inhabited the same environments as many other well-known dinosaurs of the era, living alongside species such as Triceratops, Edmontosaurus, Ankylosaurus, and Tyrannosaurus in formations like the Hell Creek Formation.
Source: Wikipedia ↗
Frequently Asked Questions
What does the name Denversaurus mean?
The name Denversaurus means "Denver lizard." It is named after the Denver Museum of Natural History, where its holotype specimen is housed.
When did Denversaurus live?
Denversaurus lived during the late Maastrichtian stage of the Late Cretaceous period, making it one of the last non-avian dinosaurs.
What was Denversaurus's size?
Gregory S. Paul estimated Denversaurus to be about 6 meters (20 ft) long and weigh around 3 tonnes (3.3 short tons).
Where were Denversaurus fossils found?
Fossils of Denversaurus have been found in the Hell Creek Formation of South Dakota and potentially the Aguja Formation of Texas, as well as the Lance Formation in Wyoming.
Is Denversaurus a type of Edmontonia?
While some paleontologists have treated Denversaurus as a synonym of Edmontonia, current research and phylogenetic analyses generally support it as a distinct nodosaurid genus closely related to Edmontonia.
What did Denversaurus eat?
As a nodosaurid, Denversaurus was a herbivore. Nodosaurids were plant-eating armored dinosaurs.
Related Dinosaur species
Antarctosaurus
Antarctosaurus was a genus of titanosaurian sauropod dinosaurs that lived during the Late Cretaceous Period in South America. The genus is known from several species, though many are considered dubious due to fragmentary remains and taxonomic confusion. The type species, Antarctosaurus wichmannianus, is estimated to have reached about 17 meters in length, while Antarctosaurus giganteus, though poorly known, represents one of the largest dinosaurs ever discovered.
Achelousaurus
Achelousaurus was a large centrosaurine ceratopsid dinosaur that roamed North America during the Late Cretaceous period, approximately 77 to 74.8 million years ago. Characterized by its large head, bony neck frill with long spikes, and distinctive bosses above its eyes and on its snout instead of horns, Achelousaurus is believed to have been a herbivore. Its fossils have been found in Montana, and it is considered a transitional form between earlier and later ceratopsid species.
Aeolosaurus
Aeolosaurus was a genus of titanosaurian sauropod dinosaur that lived in South America during the Late Cretaceous Period. Characterized by a long neck and tail, it was a quadrupedal herbivore. The genus is well-represented, with remains from several individuals belonging to at least two species, though no skull material has been recovered.