Subfamily
Valid Extinct

Opisthocoelicaudiinae

(McIntosh 1990)

Opisthocoelicaudiinae is a subfamily of titanosaurian dinosaurs from the Late Cretaceous. It was named by John McIntosh in 1990. Opisthocoelicaudiines are known from Mongolia, Argentina, and the United States. Two genera were assigned to Opisthocoelicaudiinae by Gonzalez et al. (2009): Alamosaurus and Opisthocoelicaudia, a conclusion also found by Díez Díaz et al. (2018). The hands of opisthocoelicaudiines lacked wrist bones and phalanges.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
1
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Opisthocoelicaudiinae
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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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Titanosauriformes Unranked clade
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Somphospondyli Unranked clade
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Titanosauria Unranked clade
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Lithostrotia Unranked clade
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Saltasauroidea Superfamily
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Lohuecosauria Unranked clade
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Saltasauridae Unranked clade
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Opisthocoelicaudiinae Subfamily
Fossil sites 1 geolocated sites
Distribution
Top countries
🇲🇳 Mongolia
1
Geological formations
Nemegt
1
Temporal distribution
Maastrichtian (72.2–66 Ma)
1
Images 1
Bibliography
Original description
J. S. McIntosh. 1990. Sauropoda. The Dinosauria. University of California Press, Berkeley
Bibliography (1)
M. Borsuk-Bialynicka. 1977. A new camarasaurid sauropod <i>Opisthocoelicaudia skarzynskii</i> gen. n., sp. n. from the Upper Cretaceous of Mongolia. Palaeontologia Polonica 37:5-64