Genus
Valid Extinct

Bicharracosaurus

Reutter et al. 2026

Bicharracosaurus is a genus of macronarian sauropod dinosaur, possibly a brachiosaurid, that existed during the Late Jurassic of Cañadón Calcáreo Formation in what is now Argentina. The genus is monotypic with the type species being Bicharracosaurus dionidei.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
2
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Bicharracosaurus
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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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Macronaria Unranked clade
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Bicharracosaurus Genus
Fossil sites 2 geolocated sites
Distribution
Top countries
🇦🇷 Argentina
2
Geological formations
Cañadón Calcáreo
2
Temporal distribution
Kimmeridgian (154.8–149.2 Ma)
1
Oxfordian (161.5–154.8 Ma)
1
Species (1)
Bicharracosaurus dionidei 162 Ma
Bibliography
Original description
A. Reutter, J. L. Carballido, and G. J. Windholz, D. Pol, O. W. Rauhut. 2026. Bicharracosaurus dionidei, gen. et sp. nov., a new macronarian (Dinosauria, Sauropoda) from the Late Jurassic Cañadón Calcáreo Formation of Argentina and the problematic early evolution of macronarians. PeerJ 14(4443):e20945 DOI ↗
Bibliography (1)
A. Reutter, J. L. Carballido, and G. J. Windholz, D. Pol, O. W. Rauhut. 2026. Bicharracosaurus dionidei, gen. et sp. nov., a new macronarian (Dinosauria, Sauropoda) from the Late Jurassic Cañadón Calcáreo Formation of Argentina and the problematic early evolution of macronarians. PeerJ 14(4443):e20945 DOI ↗