AboutDavid Prus Expertise I can answer any general questions about dinosaurs and on prehistoric mammals in the Cenozoic. I also know a bit about the media's various depictions of dinosaurs and their inaccuracies. I don't know much about "microfauna"-small animals, or about Paleozoic besides some knowledge about Permian animals. Plants are right out, I'm afraid.
Experience I have been interested in dinosaurs for most of my life, own a large collection of scientific papers and books on the subject, and am a member of the Field Museum in Chicago.
Education/Credentials I am in college, but studied biology and geology both in high school and as a personal effort.
Question hi-
i would ask if you know any site or link which shows the information -size speices type and museum it is located in-i know some books have this but most are not recent but i require this information -
i have read about the large hadrosaur bones and footprints that indicate that they may have got to big about 20+tons-but not much else -do you have more information on these finds?
thanks
Answer Could you please clarify your first question? Do you mean dinosaurs in general or one specific genus you want to find more on?
As for the second, the largest hadrosaurs known are
Zhuchengosaurus at around 20 or more tons (see Zhao, X.; Li, D.; Han, G.; Hao, H.; Liu, F.; Li, L.; and Fang, X. (2007). "Zhuchengosaurus maximus from Shandong Province". Acta Geoscientia Sinica 28 (2): 111–122.), based on fragmentary remains from Shandong province in China.
Lambeosaurus at about 23 tons (Morris, William J. (1981). "A new species of hadrosaurian dinosaur from the Upper Cretaceous of Baja California: ?Lambeosaurus laticaudus". Journal of Paleontology 55 (2): 453–462.), based on a well-preserved tail, incomplete skull and skeleton from Baja California
And Shantungosaurus at 17 tons (Hu Chengzhi; Cheng Zhengwu; Pang Qiping; and Fang Xiaosi (2001) (in Chinese). Shantungosaurus giganteus. Beijing: Geological Publishing House. pp. 123–135), based on five incomplete specimens from Shandong province in China
