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Well, I know I said my last post on these tiny fossils would be my last, but I was wrong. Everyone was very helpful with the previous questions (as usual) so I'm back with a couple more tiny teeth out of the Gainesville Creek matrix that is generally Miocene aged Hawthorn Fm. All of these are pretty small, most just a few mm's across. You can see previous posts here for other info or ID's: http://www.thefossilforum.com/index.php?/topic/119097-gainesville-shark-teeth-question/&tab=comments#comment-1305867 http://www.thefossilforum.com/index.php?/topic/114209-north-florida-fun/&tab=comments#comment-1264293 http://www.thefossilforum.com/index.php?/topic/119245-florida-mysteries/&tab=comments#comment-1309402 The first one is what I have tentatively called a Raja type tooth. But I know these are rare out of this material and it looks a bit different than other teeth labelled as this, so I am uncertain. Sorry for the big globs of sticky stuff in two of the pictures, I still have not mastered some of the fine points of pulling individual features out of pictures to clean them up - a work in progress. The next one are some ray dermal scutes. OK, I feel pretty good about the top two, but not the bottom two. In fact the lower right is almost certainly something else, I just don't know what. Any thoughts? Next up are some drum fish type teeth. I have separated what I picked from the matrix into three general types, two of which I feel good about the ID's. The first are what are generally called Pogonias, a genus of Drum fish. In this matrix, they are generally small, black in color, variably shaped and with a root that is rather plain (two on right side of picture). They are set as one layer of teeth in a bony plate. The second group of teeth are often blue in color, tend to be oblong, often have a figure-8 shape to the root and I found numerous multi-tooth associations where there are many teeth stacked on top of each other. I found several posts on the the forum and on the web that identified these as wrasse teeth, probably of the genus Labrodon. It is the third set of teeth that I am unsure of, they look similar to Pogonias, but generally are not as black and smooth and have a different root. it is a bit tapered and is striated. Any idea on what these are from? Lastly are several types of what I have thrown into my "unknown fish teeth" bucket. Maybe that is how they will remain and that is fine, maybe some are not even fish teeth. If anyone recognizes any of them, that would be great! The first two look similar to barracuda teeth, of which I found many, but differ in shape a bit. The first ones are thicker and not as symmetrical as my barracuda teeth and the second ones have a distinctive "S"-shape to them. The next ones: I just don't know. Ok, that's all for now. Thanks for any help you can offer. Mike

I have three teeth that were picked from matrix out of a creek in Gainesville Florida (thanks Ken, @digit). Fossils from here are generally Miocene (Hawthorn Fm) in age. The scale bar at the bottom is 1 cm per color division. I readily admit to being terrible at shark tooth ID; the dizzying array of variability and overlap is just too much for this old brain I guess . I have the Florida Paleontological Society publication (Boyd, 2016), a couple other books and have spent a bunch of time at elasmo.com, but these three teeth have me questioning myself. At first blush, I want to call them some species of Carcharhinus, but then I don't see a good nutrient groove (maybe just eroded away?). They are more triangular then the dozens of other Carcharhinus specimens I have from this site but the serrations and roots (what's left of them) look similar. Appreciate any help because I'm just going in circles.