Genus
Valid Extinct

Athenar

Whitlock et al. 2025

Athenar is an extinct genus of dicraeosaurid sauropod dinosaur from the Late Jurassic of Utah, United States. The genus contains a single species, Athenar bermani, which was described by John Whitlock and colleagues in 2025 based on the holotype specimen CM 26552: a braincase and skull roof previously ascribed to the genus Diplodocus. The specimen was found in rocks belonging to the Morrison Formation at the Carnegie Quarry at Dinosaur National Monument.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
1
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Athenar
click to enlarge
Holotypic braincase of Athenar bermani (CM 26552) in anterior (A, C) and posterior (B, D) views. Abbreviations: BO, basioccipital; BS, basisphenoid; BT, basal tubera; CPR, crista prootica; EO-OP, exoccipital-opisthotic; F, frontal; LS, laterosphenoid; OS, orbitosphenoid; P, parietal; PO, postorbital; POP, paroccipital process; PR, prootic; S, shelf overhanging the opening for cranial nerve V; SOC, supraoccipital; SQ, squamosal; I, opening for cranial nerve I; II, opening for cranial nerve II; IV, opening for cranial nerve IV; V, opening for cranial nerve V. © J. A. Whitlock, J. P. Garderes, P. Gallina & M. C. Lamanna · CC BY 4.0 · Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
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Saurischia Unranked clade
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Sauropodomorpha Unranked clade
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Massopoda Unranked clade
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Sauropodiformes Unranked clade
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Sauropoda Unranked clade
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Gravisauria Unranked clade
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Eusauropoda Unranked clade
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Neosauropoda Unranked clade
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Diplodocoidea Unranked clade
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Diplodocimorpha Unranked clade
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Flagellicaudata Unranked clade
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Dicraeosauridae Unranked clade
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Athenar Genus
Fossil sites 1 geolocated sites
Distribution
Top countries
🇺🇸 United States
1
Geological formations
Morrison
1
Temporal distribution
Tithonian (149.2–143.1 Ma)
1
Species (1)
Athenar bermani 149 Ma
Images 1
Bibliography
Original description
J. A. Whitlock, J. P. Garderes, and P. Gallina, M. C. Lamanna. 2025. Athenar bermani, a new species of dicraeosaurid sauropod from Dinosaur National Monument, Utah, U.S.A. Palaeontologia Electronica 28(3):a50:1-13 DOI ↗
Bibliography (1)
J. A. Whitlock, J. P. Garderes, and P. Gallina, M. C. Lamanna. 2025. Athenar bermani, a new species of dicraeosaurid sauropod from Dinosaur National Monument, Utah, U.S.A. Palaeontologia Electronica 28(3):a50:1-13 DOI ↗