Genus
Valid Extinct

Bactrosaurus

Gilmore 1933
Etymology Reptile à bâtons

Bactrosaurus is a genus of herbivorous hadrosauroid dinosaur that lived in Asia during the Late Cretaceous, from about 96 to 85 million years ago. The position Bactrosaurus occupies in the Cretaceous makes it one of the earliest known hadrosauroids, and although it is not known from a full skeleton, Bactrosaurus is one of the best known of these early hadrosauroids, making its discovery a significant finding.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
8
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Bactrosaurus
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Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
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Ornithischia Unranked clade
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Neornithischia Unranked clade
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Pyrodontia Unranked clade
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Cerapoda Unranked clade
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Ornithopoda Suborder
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Iguanodontia Infraorder
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Euiguanodontia Unranked clade
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Dryomorpha Unranked clade
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Ankylopollexia Unranked clade
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Styracosterna Unranked clade
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Hadrosauriformes Unranked clade
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Hadrosauroidea Unranked clade
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Bactrosaurus Genus
Measurements
Length
6 m ⓘ
Fossil sites 8 geolocated sites
Distribution
Top countries
🇨🇳 China
5
🇲🇳 Mongolia
2
🇰🇿 Kazakhstan
1
Geological formations
Iren Dabasu
4
Baynshire
2
Zouyun
1
Dabrazhin
1
Temporal distribution
Campanian (83.6–72.2 Ma)
5
Coniacian (89.8–85.7 Ma)
3
Species (2)
Bactrosaurus johnsoni 84 Ma
Bactrosaurus prynadai nomen dubium, species not entered Bactrosaurus 90 Ma
Synonyms (1)
Bactrosaurus prynadai nomen dubium, species not entered Bactrosaurus
Images 1
Bibliography
Original description
C. W. Gilmore. 1933. On the dinosaurian fauna of the Iren Dabasu Formation. Bulletin of the American Museum of Natural History 68(2-3):23-78
Bibliography (7)
S. Suzuki and M. Watabe. 2000. Report on the Japan-Mongolia Joint Paleontological Expedition to the Gobi desert, 1995. Hayashibara Museum of Natural Sciences Research Bulletin 1:45-57
M. Watabe and S. Suzuki. 2000. Cretaceous fossil localities and a list of fossils collected by the Hayashibara Museum of Natural Sciences and Mongolian Paleontological Center Joint Paleontological Expedition (JMJPE) from 1993 through 1998. Hayashibara Museum of Natural Sciences Research Bulletin 1:99-108
P. Godefroit, Z.-M. Dong, and P. Bultynck, H. Li, L. Feng. 1998. New Bactrosaurus (Dinosauria: Hadrosauroidea) material from Iren Dabasu (Inner Mongolia, P. R. China). Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre 68(supplement):3-70
M. Chow and A. K. Rozhdestvensky. 1960. Exploration in Inner Mongolia: a preliminary account of the 1959 field work of the Sino-Soviet Paleontological Expedition (SSPE). Vertebrata PalAsiatica 4(1):1-10
C.-C. Young. 1958. The first record of dinosaurian remains from Shansi. Vertebrata PalAsiatica 2(4):231-236
A. N. Riabinin. 1937. O nakhodke shlemonosnykh form Dinosauria verkhnemelovykh otlozheniyakh yuzhnogo Kazakhstana [The discovery of crested forms of Upper Cretaceous dinosaurs in southern Kazakhstan]. Priroda 1937(9):91
C. W. Gilmore. 1933. On the dinosaurian fauna of the Iren Dabasu Formation. Bulletin of the American Museum of Natural History 68(2-3):23-78