Mazon Creek unknown

[connorp]

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.

 

[RCFossils]

Looks like cartilage to me.

[marguy]

could this not be a group of acanthodian scales?

[connorp]

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.

[jdp]

Too irregular to be acanthodian scales. Cartilage is a possibility though.

[Mark Kmiecik]

I'm leaning towards Taeniophyllum latifolium, but you guys know how lame I am at ID.

[Samurai]

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. 

[connorp]

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.

[Mark Kmiecik]

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.