Kwanasaurus

Martz and Small 2019

Kwanasaurus is an extinct genus of silesaurid dinosauromorph reptiles from the Late Triassic of Colorado. It is known from a single species, Kwanasaurus williamparkeri. Kwanasaurus had a deeper, stronger skull and greater specialization for herbivory compared to other silesaurids. It also possessed many unique characteristics of the snout, ilium, and lower part of the femur. It was described along with new specimens of Dromomeron from the Eagle Basin, the northernmost extent of the Chinle Formation.

Temporal range

Triassic

Jurassic

Cretaceous

Paleogene

Neogene

252 201 145 66 0 Ma

PBDB occurrences

Group

Dinosaures

Herbivore Ground dwelling, gregarious Terrestrial

click to enlarge

Figure 24: Reconstruction of Kwanasaurus williamparkeri. (A) Skeletal reconstruction with elements based on individuals of varied sizes, all scaled under the assumption that Kwanasaurus is proportioned similarly to Silesaurus. (B) Life reconstruction. Scale bars = 10 cm, given for probable largest specimen (DMNH EPV.34579) and one of the smallest specimens (DMNH EPV.63139). © Jeffrey W. Martz, Bryan J. Small · CC BY 4.0 · Wikimedia

PBDB ↗ Wikipedia ↗

Classification

Dinosauria Unranked clade

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Ornithischia Unranked clade

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Parapredentata Unranked clade

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Silesauridae Unranked clade

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Sulcimentisauria Unranked clade

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Kwanasaurus Genus

Fossil sites 6 geolocated sites

Distribution

Top countries

🇺🇸 United States

Geological formations

Chinle

Temporal distribution

Norian (227.3–205.7 Ma)

Species (1)

Kwanasaurus williamparkeri 227 Ma

Images 1

Bibliography

Original description

J. W. Martz and B. J. Small. 2019. Non-dinosaurian dinosauromorphs from the Chinle Formation (Upper Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae). PeerJ 7:e7551:1-71 DOI ↗

Bibliography (1)

Kwanasaurus

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