I've been collecting for a few years, and other than the ubiquitous Metasequoia Occidentalis, don't know a lot about what I've been picking up. Apologies for off-center photos.
Top right is a nicely detailed, strangely pale leaf fragment. The bottom left comptonia-like specimen is relatively common at this site. The one on the bottom right I am very curious about. I assume the bottom left is some kind of conifer seed pod. I've not found any cones here.