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Nodosauridae

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Nodosaurids
Temporal range: Cretaceous
Life restoration of the nodosaurid Edmontonia.
Scientific classification
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Nodosauridae

Marsh, 1890
Genera

See text.

Nodosauridae is a family of ankylosaurian dinosaurs, from the Cretaceous Period of what are now North America, Asia, Australia, Antarctica and Europe.

Characteristics

Edmontonia in Royal Tyrrell Museum of Palaeontology

Diagnostic characteristics for the Nodosauridae include the following: supraorbital boss rounded protuberance, occipital condyle derived from only the basioccipital and ornamentation present on the premaxilla. There is a fourth ambiguous character: the acromion is a knob-like process. All nodosaurids, like other ankylosaurs, may be described as medium-sized to large, heavily-built quadrapedal herbivorous dinosaurs, possessing small denticulate teeth and parasagittal rows of osteoderms (a type of armour) on the dorsolateral surfaces of the body.

Taxonomy

Classification

The family Nodosauridae was erected by Othniel Charles Marsh in 1890, and anchored on the genus Nodosaurus.

Phylogeny

The clade Nodosauridae was first defined by Paul Sereno in 1998 as "all ankylosaurs closer to Panoplosaurus than to Ankylosaurus," a definition followed by Vickaryous, Maryanska, and Weishampel in 2004. Vickaryous et al. considered two genera of nodosaurids to be of uncertain placement (incertae sedis): Struthiosaurus and Animantarx, and considered the most primitive member of the Nodosauridae to be Cedarpelta.[3]

References

  1. ^ a b Burns, Michael E. (2008). "Taxonomic utility of ankylosaur (Dinosauria, Ornithischia) osteoderms: Glyptodontopelta mimus Ford, 2000: a test case". Journal of Vertebrate Paleontology. 28 (4): 1102–1109.
  2. ^ Carpenter, Kenneth (2008). "Ankylosaurs from the Price River Quarries, Cedar Mountain Formation (Lower Cretaceous), east-central Utah". Journal of Vertebrate Paleontology. 28 (4): 1089–1101. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  3. ^ Vickaryous, M. K., Maryanska, T., and Weishampel, D. B. (2004). Chapter Seventeen: Ankylosauria. in The Dinosauria (2nd edition), Weishampel, D. B., Dodson, P., and Osmólska, H., editors. University of California Press.
  • Carpenter, K. (2001). "Phylogenetic analysis of the Ankylosauria." In Carpenter, K., (ed.) 2001: The Armored Dinosaurs. Indiana University Press, Bloomington & Indianapolis, 2001, pp. xv-526
  • Osi, Attila (2005). Hungarosaurus tormai, a new ankylosaur (Dinosauria) from the Upper Cretaceous of Hungary. Journal of Vertebrate Paleontology 25(2):370-383, June 2003.