I walked the North Sulfur River yesterday. I was surprised at how low the water is. There had been a 3 1/2 foot rise at the gauge downstream just a couple of days earlier, but it’s obvious there has been no rain at the FM2990 bridge. There is not much water flow at all. No fresh water made me wonder how picked over it would be, but there always seems to be interesting things to be seen at NSR, so down into the river bed I went.

I found these two ammonite fragments lying, half buried in sand, exactly in the position in this photo. If they are halves of the same ammonite, there is some material missing between them. These are the largest ammonite fragments I’ve found at NSR. Click the photos to be able to zoom in and get a closer look.

More ammonite pieces.

A lamniform shark vert.

And the bones. Most are mosasaur bones, but the thought in The Fossil Forum was that the bone in the lower right and in the bottom photo is part of a fish skull, a Xiphactinus, to be exact.