One of two large specimens found in the same rock.

This rock was found as a large piece embedded about 3 feet up a hillside. After wrestling it to the ground, a large sledgehammer split it into three large pieces, so that I could transport them home. I started to split one piece before I left. That is when I found this.

I suspect this is a Solenochilus, however, there is not enough material here for me to make a positive identification. There appear to be some septal wall markings.

With Metric Scale

Showing ridges