While not all of these specimens are truly microscopic, most require magnification to adequately see them. These are specimens picked out of gravel from the Three Lakes Creek on the NW side of Gainesville, Florida. Most specimens originate from the Miocene aged Hawthorn Formation. Thanks to @digit for providing the collecting opportunity as well as innumerable aids in the identification.
Four main sources (in no particular order) were used to identify the fossils:
1: FPS Special Paper by Boyd (2016) called "Fossil Sharks and Rays of Gainesville Creeks Alachua County, Florida"
2: Elasmo.com
3: TFF members such as @digit and @Al Dente as well as others with an assist to Roger Portell at the FLMNH
4: "The Fossil Vertebrates of Florida" edited by R.C. Hubert, Jr.
I have done my best to get an accurate ID, but certainly if you see one in need of a correction, please let me know. Thanks
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Image Comments
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By icycatelf · Posted
After doing some research, I'm under the impression that this is Gastrioceras sp. Not sure how to go about updating the post though.
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By M3gal0don_M4n · Posted
Actually one of the coolest teeth I have seen! Great find.
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By citronkitten · Posted
OR Sylvestrilamia teretidens based on crown extending out to cusplets
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By citronkitten · Posted
OR Sylvestrilamia teretidens based on crown extending out to cusplets?
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By bthemoose · Posted
@Fin Lover, this ID is based on input that @siteseer provided here:
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By Fin Lover · Posted
Based on the enamel "shelf" on the labial side, I would have IDed this as a retroflexus. May I ask what features indicate desori?
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By Samurai · Posted
Oh! I am so sorry for the late reply as I never got the notification. Sadly I have not, besides a familial (mostly superficial) resemblence to the modern ratfish (probably from the same diet) I have not gotten any clear answers.
Jokes aside, a true Id may never come unless far into the future. I still have hope one day someone can help with this ID.
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