Abelisaur & Titanosaur migratory routes

[John Schneiderman <dino@revelation.unomaha.edu>]

In the lastest issue of The Dinosaur Report (Fall 1995) the article "The 
Last Dinosaurs of India" by Sankar Chatterjee illustrates the migration 
route of abelisaurs & titanosaurs from South America to India during the 
Late Cretaceous.

The route illustrated (p.15, fig.3): South America to North America 
(western half) to Asia via. Beringia to India and finally India to 
eastern Africa to France.

This doesn't seem right...
1) No Abelisaur or Titanosaurs have been found in the northern parts of 
North America and Asia with any certainity.
2) Assumption made that Abelisaurs & Titanosaurs originated in South 
America.

Alternative view...
1) Titanosaurs originiated in Africa (lastest Jurassic or early Cretaceous) 
and radiated to Europe, South America, and India via Madagascar.  The 
titanosaur (Alamosaurus) invaded western North America (as far north as 
Utah) via South America.
2) Abelisaurs originated in Europe and radiated to Africa then to South 
America and India.

Questions:
1) When did Africa & South America become completely seperated?

2) Is Titanosaurus falloti Hoffet, 1942 really a titanosaur or is it 
something else?

3) Dravidosaurus blanfordi was recently determined to be a plesiosaur.
What is the status of Brachypodosaurus gravis & Lametasaurus indicus (the
non-theropod parts)? 


---John Schneiderman (dino@revelation.unomaha.edu)