/sci/ - Science & Math

Geologist here. Please post dimensions of sample; better still, post an image with a coin and/or ruler for scale.

>>9953833
No way that is a crinoid, the stems are the most common thing to be preserved as crinoids are mostly soft tissue, and they are calcarious rings usually no more than 10-20mm diameter. Furthermore, they are hard to find stacked together as a stem; more common to see individual rings scattered throughout the deposition layer.

The markings are more likely to be of a bivalve of some sort; think clams or cockles. The odd thing is OPs sample seems to be a-ve impression in the rock of something. Ghost or Trace fossils do not manifest in this fashion.

I reckon OP's sample is not a fossil. Fake and gay?