| rdfs:comment
| - Bactrosaurus (meaning "Bactrian lizard," "Bactria" + sauros = lizard) was a herbivorous dinosaur that lived in east Asia during the late Cretaceous, 97 - 85 Ma. The position Bactrosaurus occupies in the Cretaceous makes it one of the earliest known hadrosaurs, and although it is not known from a full skeleton, Bactrosaurus is one of the best known of these early hadrosaurs, making its discovery a significant finding.
- Bactrosaurus (meaning "Club lizard," "baktron" = club + sauros = lizard) is a genus of herbivorous dinosaur that lived in east China during the late Cretaceous, about 70 mya. 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 forms of hadrosaurs predecessors.
- thumb|400px|Bactrosaurus El Batrosaurus fue un hadrosaurio de pequeño tamaño, 6 metros (poco, para un hadrosaurio). Categoría:Reptiles Categoría:Dinosaurios Categoría:Ornitisquios Categoría:Hadrosauridos Categoría:Fauna del Cretácico
- A typical Bactrosaurus would have been 6 metres (20 ft) long[1] and 2 metres (6.6 ft) high when standing on all fours, and weighed 1.1 to 1.5 tonnes (2,400 to 3,300 lb), with an 80 centimetres (2.6 ft) femur. Bactrosaurus was originally described as lacking a crest, which would be typical for an iguanodont, but anomalously primitive for a lambeosaurine like itself.[1] However subsequent study of Bactrosaurus remains uncovered pieces of what appear to be the base of an incompletely preserved crest.
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| abstract
| - Bactrosaurus (meaning "Bactrian lizard," "Bactria" + sauros = lizard) was a herbivorous dinosaur that lived in east Asia during the late Cretaceous, 97 - 85 Ma. The position Bactrosaurus occupies in the Cretaceous makes it one of the earliest known hadrosaurs, and although it is not known from a full skeleton, Bactrosaurus is one of the best known of these early hadrosaurs, making its discovery a significant finding.
- Bactrosaurus (meaning "Club lizard," "baktron" = club + sauros = lizard) is a genus of herbivorous dinosaur that lived in east China during the late Cretaceous, about 70 mya. 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 forms of hadrosaurs predecessors.
- thumb|400px|Bactrosaurus El Batrosaurus fue un hadrosaurio de pequeño tamaño, 6 metros (poco, para un hadrosaurio). Categoría:Reptiles Categoría:Dinosaurios Categoría:Ornitisquios Categoría:Hadrosauridos Categoría:Fauna del Cretácico
- A typical Bactrosaurus would have been 6 metres (20 ft) long[1] and 2 metres (6.6 ft) high when standing on all fours, and weighed 1.1 to 1.5 tonnes (2,400 to 3,300 lb), with an 80 centimetres (2.6 ft) femur. It was an early relative of Lambeosaurus,[1] perhaps a predecessors, as it shows a number of iguanodont-like features, including three stacked teeth for each visible tooth, small maxillary teeth, and an unusually powerful build for a hadrosaur. It shows features intermediate between those of the two main hadrosaurid groups, and may represent an ancestral form that evolved from an earlier iguanodontid dinosaur. Bactrosaurus was originally described as lacking a crest, which would be typical for an iguanodont, but anomalously primitive for a lambeosaurine like itself.[1] However subsequent study of Bactrosaurus remains uncovered pieces of what appear to be the base of an incompletely preserved crest. In 2003, evidence of tumors, including hemangiomas, desmoplastic fibroma, metastatic cancer, and osteoblastoma was discovered in fossilized Bactrosaurus skeletons. Rothschild et al. tested dinosaur vertebrae for tumors using computerized tomography and fluoroscope screening. Several other hadrosaurids, including Brachylophosaurus, Gilmoreosaurus, and Edmontosaurus, also tested positive. Although more than 10,000 fossils were examined in this manner, the tumors were limited to Bactrosaurus and closely related genera. The tumors may have been caused by environmental factors or genetic propensity.
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