You asked for a modern example so I don't think you would classify this as
anything but post flood.
I may have had the formation name wrong. Here are the articles.
Good holocene fish fossils are found in Champlainian Sea. see
Barry G. Warner, "Early Work in Quaternary Botany in Canada,
Geoscience Canada, 13:1, pp. 39-44
Donald E. Champagne, C. R. Harington and Don E. McAllister,
"Deepwater Sculpin, Myoxocephalus thompsoni (Girard) from a
Pleistocene nodule, Green Creek, Ontario, Canada," Can. Journal
Earth Sciences, 16, 1979, pp.1621-1628
and Don E. McAllister, Stephen L. Cumbaa and C. R. Harington,
"Pleistocene fishes (Coregonus, osmerus, Microgadus,
Gasterosteus) from Green Creek, Ontario, Canada," Can. Journal
Earth Sciences, 18, 1981), p. 1356-1364
glenn
Adam, Apes, and Anthropology: Finding the Soul of Fossil Man
and
Foundation, Fall and Flood
http://www.isource.net/~grmorton/dmd.htm