期刊
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 276, 期 1667, 页码 2549-2555出版社
ROYAL SOC
DOI: 10.1098/rspb.2009.0229
关键词
Dinosauria; Hadrosauroidea; Cretaceous; Asia; radiation; palaeobiogeography
资金
- National Science Foundation [EAR-9804771, 0207004]
- National Geographic Society [5901-97, 6281-98]
- US Civilian Research and Development Foundation [RUB1-2860-ST-07]
- Directorate For Geosciences
- Division Of Earth Sciences [0207004] Funding Source: National Science Foundation
Levnesovia transoxiana gen. et sp. nov., from the Late Cretaceous (Middle-Late Turonian) of Uzbekistan, is the oldest well-documented taxon referable to Hadrosauroidea sensu Godefroit et al. It differs from a somewhat younger and closely related Bactrosaurus from Inner Mongolia (China) by a tall sagittal crest on the parietals and the absence of club-shaped dorsal neural spines in adult specimens. Levnesovia, Bactrosaurus and possibly Gilmoreosaurus represent the earliest radiation of Hadrosauroidea, which took place during the Cenomanian-Turonian and possibly in North America. The second, Santonian-age radiation of Hadrosauroidea included Aralosaurus, Hadrosauridae and lineages leading to Tanius (Campanian) and Telmatosaurus (Maastrichtian). Hadrosauridae appears to be monophyletic, but Hadrosaurinae and Lambeosaurinae originated in North America and Asia, respectively.
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