Genus
Valid Extinct

Niobrarasaurus

Carpenter et al. 1995

Niobrarasaurus is an extinct genus of nodosaurid ankylosaurian dinosaur which lived during the Late Cretaceous, around 87 to 82 million years ago. Its fossils were found in the Smoky Hill Chalk Member of the Niobrara Formation, in western Kansas, which would have been near the middle of the Western Interior Seaway during the Late Cretaceous. It was probably closely related to Nodosaurus.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
2
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Niobrarasaurus
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Wikimedia
Niobrarasaurus
Niobrarasaurus
Niobrarasaurus
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
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Ornithischia Unranked clade
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Parapredentata Unranked clade
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Saphornithischia Unranked clade
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Prionodontia Unranked clade
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Genasauria Unranked clade
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Thyreophora Unranked clade
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Thyreophoroidea Superfamily
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Eurypoda Unranked clade
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Ankylosauria Unranked clade
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Euankylosauria Unranked clade
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Nodosauridae Family
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Niobrarasaurus Genus
Measurements
Length
4,9 m ⓘ
Niobrarasaurus coleii  
Mass
1 000 kg ⓘ
Niobrarasaurus coleii  
Fossil sites 2 geolocated sites
Distribution
Top countries
🇺🇸 United States
2
Geological formations
Niobrara
2
Temporal distribution
Santonian (85.7–83.6 Ma)
1
Coniacian (89.8–85.7 Ma)
1
Species (1)
Niobrarasaurus coleii 90 Ma
Images 5
Bibliography
Original description
K. Carpenter, D. W. Dilkes, and D. B. Weishampel. 1995. The dinosaurs of the Niobrara Chalk Formation (Upper Cretaceous, Kansas). Journal of Vertebrate Paleontology 15(2):275-297 DOI ↗
Bibliography (2)
M. J. Everhart and S. A. Hamm. 2005. A new nodosaur specimen (Dinosauria: Nodosauridae) from the Smoky Hill Chalk (Upper Cretaceous) of western Kansas. Transactions of the Kansas Academy of Science 108(1/2):15-21 DOI ↗
M. G. Mehl. 1936. Hierosaurus coleii: a new aquatic dinosaur from the Niobrara Cretaceous of Kansas. Journal of the Scientific Laboratories, Denison University 31:1-20