I made a trip back to the North Sulfur River yesterday. I had found that giant mosasaur vert as I was leaving last week, and it had gotten hot enough that I didn’t take time to search the area around it well, so I couldn’t resist doing that yesterday. I ended up disappointed in not finding much else in the area near where I’d found that vert, and all the footprints everywhere were a reminder that the river has been pretty picked over since the last rain, even in this remote area where I was. I need to wait for a good rain before making another trip here.

But I did find a few things. This mosasaur vert was probably the best find of the day. It’s actually one of the larger mosasaur verts I’ve found, but seems tiny compared to that giant one I found last week. Here are three views of it, top, side, and bottom. Click the individual photos to zoom in for a larger view.

I was not able to identify any of these next bones. I’ve posted in The Fossil Forum to see if anyone else can identify them. These type bones from NSR are usually Ozan formation, and are either fish or mosasaur. Here are three views of bone #1.

And three views of bone #2. It is so big and thick, it makes me think of mosasaur jaw, but there are no teeth in it.

Three views of bone #3. It’s so thin, I wondered if it’s from a mosasaur paddle or fish fin.

And finally, I found this piece of an ammonite. I would love to see the entire ammonite. It’s larger than most you find at NSR.