Several more questions

["Dino Rampage" <dino_rampage@hotmail.com>]

Hi, it's me again to bother you guys with more questions...

1) Which formation is 'Stegoceras' lambei known from?
2) What sort of environment was the Western Interior Seaway like? Was it 
tropical or temperate? My view has always been that of tropical lagoons, 
coral reefs & atolls from the Gulf northwards. North of Alberta, the 
coastline would be full of kelp forests and temperate rocky reefs, much like 
the coasts of California. Even further north, the rocky reefs would be 
replaced by somewhat more frigid waters, something like the coasts of 
Washington to Southern Alaska. How likely is this? And were there any coral 
reefs in the Late Cretaceous like those of today?
3) Is there any evidence to show that different groups of animals preferred 
different regions of the Seaway? I have heard of evidence that 
Hesperornithids & Elasmosaurs preferred temperate waters, that mosasaurs 
preferred  coastlines & polycotylids preferring open water. Or is this all 
guesswork?
4) Is Tsintaosaurus a hadrosaurine or lambeosaurine?
5) What sort of environment was predominant in the various regions of Late 
Cretaceous North America? I asked this question a while back, and I guess I 
was too exhausted and my words weren't properly phrased. Basically, I'm 
asking about the general climate & vegetation of places like the Judith 
River, Hell Creek, Two Medicine, Horseshoe Canyon, Kirtland, Fruitland, 
Lance, Javelina, Woodbuury & all the other formations. I'm looking for 
information like: What sort of climate was it? Mild, temperate or 
subtropical? Arid or wet? Swampy, forested or plains? Seasonal or otherwise? 
What was the predominant type of vegetation? etc etc.
6) I need information regarding the stratigraphy of the various North 
American mosasaurs & plesiosaurs.

Any help with the above would be very useful. Thanks!



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