connorp Posted November 21, 2022 Share Posted November 21, 2022 This concretion opened up tonight. I'm not entirely sure what it is. I thought it might be a cross section of a small bone, but I could also seeing it being some weird pyrite formation - the site that this was collected at produces a lot of those. Any thoughts? A couple shots under a microscope. 3 Link to comment Share on other sites More sharing options...
RCFossils Posted November 21, 2022 Share Posted November 21, 2022 Looks like cartilage to me. 3 1 Link to comment Share on other sites More sharing options...
marguy Posted November 21, 2022 Share Posted November 21, 2022 could this not be a group of acanthodian scales? Link to comment Share on other sites More sharing options...
connorp Posted November 21, 2022 Author Share Posted November 21, 2022 5 minutes ago, marguy said: could this not be a group of acanthodian scales? I don’t think so. If it’s not clear from the pictures, all of the “cells” are hollow. 1 Link to comment Share on other sites More sharing options...
jdp Posted November 21, 2022 Share Posted November 21, 2022 Too irregular to be acanthodian scales. Cartilage is a possibility though. 2 1 Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted November 21, 2022 Share Posted November 21, 2022 I'm leaning towards Taeniophyllum latifolium, but you guys know how lame I am at ID. Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
Samurai Posted November 21, 2022 Share Posted November 21, 2022 I'm not sure if this would add or help out with the identification of this unknown fossil, but I happen to have found some very similar things in the Muncie Creek phosphate nodules that I always thought were cartilage. Here is the specimen I'm referring too: Here they are (left) compared to other fossils I have labeled as cartilage in the past (right): Sorry if this did not help, I'm usually not too good at ids but I thought a similar fossil from different preservation would be a good reference. 1 1 Link to comment Share on other sites More sharing options...
connorp Posted November 21, 2022 Author Share Posted November 21, 2022 2 hours ago, Mark Kmiecik said: I'm leaning towards Taeniophyllum latifolium, but you guys know how lame I am at ID. It did cross my mind, but in examples I've seen the "cells" are much smaller and are arranged in lines, as opposed to the somewhat random arrangement here. Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted November 22, 2022 Share Posted November 22, 2022 5 hours ago, connorp said: It did cross my mind, but in examples I've seen the "cells" are much smaller and are arranged in lines, as opposed to the somewhat random arrangement here. This is true. The specimens posted by Samurai sure look similar. 1 1 Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
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