Genus
Valid Extinct

Haolong

Huang et al. 2026

Haolong is an extinct genus of hadrosauroid ornithopod dinosaur known from the Early Cretaceous Yixian Formation of Liaoning, China. The genus contains a single species, Haolong dongi, known from a nearly complete, articulated skeleton with preserved integumentary structures.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
1
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Haolong
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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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Haolong Genus
Fossil sites 1 geolocated sites
Distribution
Top countries
🇨🇳 China
1
Geological formations
Yixian
1
Temporal distribution
Barremian (125.77–121.4 Ma)
1
Species (1)
Haolong dongi 126 Ma
News 1
Haolong: Beast of the Week
Haolong: Beast of the Week
China Cretaceous Early Cretaceous juvenile specimen +2
 This week we'll be checking out a newly described dinosaur that is so unique, it completely changes what we think we knew about dinosaur skin!  Enter Haolong dongi!Haolong was a plant-eating dinosaur that lived in what is now Liaoning, China, during the Early Cretaceous period, about 112.5 million years ago.  The only specimen on record measures about 8 feet (2.45m) from beak to tail but was a juvenile when it died so the species likely grew larger.  The genus name translates from Chinese to "S
08/03/2026 prehistoricbeastoftheweek
Images 1
Bibliography
Original description
J. Huang, W. Wu, and L. Mao, F. Bertozzo, D. Dhouailly, N. Robin, M. Pittman, T. G. Kaye, F. Manucci, X. He, X. Wang, P. Godefroit. 2026. Cellular-level preservation of cutaneous spikes in an Early Cretaceous iguanodontian dinosaur. Nature Ecology & Evolution 10:203-210 DOI ↗
Bibliography (1)
J. Huang, W. Wu, and L. Mao, F. Bertozzo, D. Dhouailly, N. Robin, M. Pittman, T. G. Kaye, F. Manucci, X. He, X. Wang, P. Godefroit. 2026. Cellular-level preservation of cutaneous spikes in an Early Cretaceous iguanodontian dinosaur. Nature Ecology & Evolution 10:203-210 DOI ↗