Are there any examples of fossilised flowers with petals also preserved?

Question

Are fossilised flowers just rare or actually impossible?

Answer 1

Not uncommon, but a lot of the fossils we see come from eras before there were flowers (ferns get fossilized and found in coal, etc.)

http://www.mnh.si.edu/museum/virtualtour...

http://images.google.com/images?hl=en&rl...

Answer 2

http://nai.nasa.gov/library/images/news_...

they are not rare