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17 August 2019 Shark tooth? Lower Cretaceous - Walnut formation Western Bell County, Texas, USA I found this in the nearby park where I've found many of the normal central Texas fossils over the years (oxytropidocerous, salenia, parasmilia, heart urchins, gastropods, snails, etc.). My eyes tell me this thing looks a lot like a shark tooth. But my brain is trying to get me to disagree. Here's why I'm stumped: 1. While it makes sense that shark tooth fossils COULD be found in this area, along with all of the other sea life, we aren't known for turning up many teeth. In fact, I've not found any in this area yet and haven't really heard of others finding them around here either. 2. The shark teeth I have found in other areas, such as Post Oak Creek, have all looked . . . well, like fossilized shark teeth. This one looks like the chalky limestone in which it was found. Which has me wondering if it's a tooth or not. I welcome your input.
It was a beautiful day here in Austin and I decided to get a few quick hours in on some local Walnut Formation exposures. Lower Cretaceous. I think I found the largest Coenholectypus planatus I’ve ever seen. It is slightly crushed but would be a full 5 centimeters in diameter. My largest prior specimen was maybe 4cm. Tell/show me your largest of this species.