Hadrosaur Bone - 6.684" Fossil with Stand
Hadrosaur Bone - 6.684" Fossil with Stand
The mighty hadrosaurs were some of the most successful herbivores of the Cretaceous Period. The "duck bills" these dinosaurs are known for were not actually beaks but hundreds of small teeth, helping them chew through even the toughest vegetation.
This specimen is a beautiful section of a Hadrosaur fossil bone, measuring 6.684" long. It was recovered on private land in South Dakota's Hell Creek Formation and dates to 66 million years ago. Included with the fossil is a metal display stand.
The Duck-Billed Dinosaur
Hadrosaurs were a large family of ornithischian dinosaurs from the Cretaceous Period. Related to Iguanodons, they are known primarily for their "duck-bills" which are in fact elongated rostral bone structures that give the appearance of a beak, but actually housed hundreds of small teeth that allowed these giant herbivores to grind through all manner of plant material, including rotten wood.
This specimen is a piece of Hadrosaur fossil bone material, found in South Dakota's Hell Creek Formation, dating to around 66 million years ago. It ships in a sturdy carton and includes a Mini Museum Certificate of Authenticity. You can explore more Hadrosaur showcase pieces in the collection below.
📸 "Hadrosaurs grew rapidly, and quantifying their growth is key to understanding life-history interactions between predators and prey during the Late Cretaceous." ~ Lisa Noelle Cooper, "Relative growth rates of predator and prey dinosaurs reflect effects of predation." Proceedings of the Royal Society B: Biological Sciences 275.1651 (2008)
MORE ABOUT HADROSAURS
📸 Hadrosaur's evolutionary branches
Master Herbivores
Hadrosaur fossils have been found on all continents. Evidence of their migratory nature has been recovered, but recent studies suggest that some species, those in polar regions, may have settled in place year-round.
These large herbivores ate twigs, berries and coarse plant matter. Much is known about their diet as fossilized stomach contents have been identified. They foraged on low-level foliage from conifers and deciduous shrubs and trees.
Recent studies suggest that Hadrosaurs, which could reach the size of a Tyrannosaurus rex, grew at phenomenal speeds, in part to avoid predation by therapods. Compare this with T. rex, which took three times that long to grow to full size.
📸 A Closeup On The Hadrosaur Bone
As noted above, this specimen is a fragment of Hadrosaur bone recovered on found in the Hell Creek Formation of South Dakota. Once a coastal plain threaded with streams along the Western Interior Seaway, the Hell Creek Formation is one of the most productive locations for Late Cretaceous Period fossils all the way up to the end of the Cretaceous. Studies indicate rainfall amounts increased dramatically after the K-Pg boundary event, with an influx of sediments and widespread swamps.
Further Reading
Carrano, Matthew T., Christine M. Janis, and J. J. Sepkoski. "Hadrosaurs as ungulate parallels: lost life styles and deficient data." Acta Palaeontologica Polonica 44.3 (1999): 237-261.
Chinsamy, Anusuya, et al. "Hadrosaurs were perennial polar residents." The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology 295.4 (2012): 610-614.
Cooper, Lisa Noelle, et al. "Relative growth rates of predator and prey dinosaurs reflect effects of predation." Proceedings of the Royal Society B: Biological Sciences 275.1651 (2008): 2609-2615.
Fastovsky, David E., and David B. Weishampel. Dinosaurs: A Concise Natural History. 2009. Cambridge: Cambridge University Press. 2009. eBook.
Padian, Kevin, and Jack R. Horner. "The evolution of ‘bizarre structures’ in dinosaurs: biomechanics, sexual selection, social selection or species recognition?." Journal of Zoology 283.1 (2011): 3-17.
You, Hai-lu, et al. "The earliest-known duck-billed dinosaur from deposits of late Early Cretaceous age in northwest China and hadrosaur evolution." Cretaceous Research 24.3 (2003): 347-355.
Farlow, James O., Carl V. Thompson, and Daniel E. Rosner. "Plates of the dinosaur Stegosaurus: forced convection heat loss fins?." Science 192.4244 (1976): 1123-1125.
De Buffrénil, V., J. O. Farlow, and A. De Ricqlès. "Growth and function of Stegosaurus plates: evidence from bone histology." Paleobiology (1986): 459-473.
Saitta, Evan Thomas. "Evidence for Sexual Dimorphism in the Plated Dinosaur Stegosaurus mjosi (Ornithischia, Stegosauria) from the Morrison Formation (Upper Jurassic) of Western USA." (2015): e0123503.
Cooper, Lisa Noelle, et al. "Relative growth rates of predator and prey dinosaurs reflect effects of predation." Proceedings of the Royal Society B: Biological Sciences 275.1651 (2008): 2609-2615.
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