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The does anyone have a good source for purchasing sands containing micro fossils? We have one Diatomaceous sand here in Oregon that I know of and I'd like to find a source of other types of fossil bearing sands (for the rainy season here). Thanks.

In school, I am doing a phylum project, where we discuss in detail about a certain phylum from the Eukaryotic kingdoms. Desperately wanted to do Arthropoda (as I have collected this quite frequently and am quite fond of them, as you may already know), but we were last to choose due to chance, and Arthropoda was long gone In the end, we were given the plant phylums of Angiosperms and Conifers. I personally came to the agreement that I would research their evolutionary lines, seeing I am passionate in all things paleontology. I know some about the evolutionary line, such as that Conifers first appeared 320 MYA in the Pennsylvanian and Angiosperms came about 125 MYA in the early Cretaceous, but beyond that, I know very little about their evolutionary lines. Knowing the kinds of incredibly knowledgeable people that come here, TFF was the first place I turned to. Here, I'd like to pool any and all relevant articles. Any contributions are very welcome!