[Scriptoris] Viking/Norse Illumination?

[Deanna della Penna]

I have a request in my queue for a Viking/Norse piece. I'm having
difficulty telling the difference between elements in the Viking/Norse
and Celtic/Anglo Saxon art styles.

Right now, I'm looking at things like:
Necrologium Lundense (12th c. Danish)
http://laurentius.ub.lu.se/volumes/Mh_6/

Íslendingabók (11th c. Icelandic)
http://www.randburg.is/is/am/

Margrete Skulesdatters psalter (13th c. Norse)
http://folk.uib.no/hnooh/handbok/illustrasjonar/

Flateyjarbók (14th c. Icelandic)
http://folk.uib.no/hnooh/handbok/illustrasjonar/

Does anyone have any recommendations for online references to use, or
characteristics/elements to keep in mind? I have a tight deadline for
this one, and I'm afraid of it looking culturally incorrect.

All the best,
-Deanna