Spongly said:
Are you sure? Having in mind that Saxons adopted them from Normans, and Normans descended from Danish vikings... these shieds couldn't just appear from thin air, could they? They might have been rare, but one can not say they were completely absent
Well, I'm not sure given that we're talking about a period over a thousand years ago, but all archaeological finds and all pictures from the time show shields as being round. Kite shields don't appear from thin air, but they develop out of round shields in the 11th century, which is when they start appearing in some of the artwork. One would assume the development occurs due to a greater tendency to fight in very close formation, or from horseback, where a long shield that covers one whole side of your body would be an advantage.
Rurik is only depicted with a kite shield in 19th and 20th century illustrations, not in any period source.