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RE: Polar dinosaurs
Way back in the Bajocian, the Walloon Coal Measures in QLD (which produced
Rhoetosaurus brownei) would have probably been at a comparable latitude to
the Victorian fauna (based on Douglas and William's estimate of 65 S)
Hmm...any suggestions for possible survival strategies for the Mangahouanga
dinofauna in Campanian-Maastrichtian New Zealand? Here we have a group of
dinosaurs (Sauropod, large theropod, ankylosaur, sml-mid size ornithopods)
at a polar latitude, stuck on an isolated insular environment (ie. no
migration without breaking out the waterwings...).
>> Large sauropods? They couldn't hibernate and weren't covered in 'fur'.
>There are no sauropod remains in the extreme south of Australia, only in
>the north of the country. Perhaps like crocs, they could tolerate a
>certain level of coldness, but not as much as other animals (hypsies,
>etc), which kept them only in the more northerly regions of Oz.<<
>* Ok, the book says that sauropods are rare at the Ridge consiting of teeth.
>They have some opalized caudal centra from Sheepyard, 80 km west of Lighting
>ridge. I take it this means further inland. I don't think that would
>miminize the cold or the long nights just because it's more inland. Wasn't
>all of Australia subject to long nights?