Flood geology for general resources about Flood geology.
Joggins Fossil Cliffs, Nova Scotia for resources specific to that formation.
Claim CC331: Polystrate fossils indicate sudden massive deposition
Brief response in the Index to Creationist Claims in the TalkOrigins Archive.
Article by Andrew MacRae in the TalkOrigins Archive.
Wikipedia's article on this is very good.
Common Creationist Attacks on Geology
Article from the National Center for Science Education. Response to claims about 'polystrate' fossils starts part-way down the page. Includes exposure of creationist quote mining on the topic.
Video in the How Creationism Taught Me Real Science series.
Creation Today Claims - Polystrate Trees
Video by Paulogia.
Dinosaur blood and polystrate trees debunked
Video by potholer54. Uses humour.
The Rocks Were There: Straight Science Answers to Bent Creationist Questions
Book by James Downard and Jackson Wheat that deals with creationist mishandling of the scientific literature. Pages 507-513 of volume 1 deal with 'polystrate' fossils.
Claim CC335: A fossil whale was found vertically through several strata
Brief response in the Index to Creationist Claims in the TalkOrigins Archive.
Article by Darby South in the TalkOrigins Archive about the claim that a whale was found through multiple strata.