Cretaceous seaways

[Ross Hastings]

Hi all:
I am working on some plant distrubtion patterns and I was wondering if anyone
knew of some good maps of the mid to late Cretaceous that showed the extent
of the oceans. I am particularly interested in North America and Europe but a
world view would also be most useful. I am also searching for geological maps
that show the location of Cretaceous instrusive bedrock.
Thanks in advance
Ross I. Hastings
Curator of Botany
Provincial Museum of Alberta
Rhastings at mcd.gov.ab.ca