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I've had some beautiful little hikes around a sandstone outcrop and I've stumbled upon some very decent bivalves

From the Pierre Shale of Fort Collins. Found next to a lot of Inoceramus bivalves not too often you see something like this. I initially believed it was a branch of wood that was buried but I'm thinking it could be a rib bone most likely from a mosasaurus. Any feedback is appreciated just thought someone should look at it.

Hi, I found two larger than usual teeth (for me...) just wanna make sure what they are also some other interesting stuff that I can’t figure out all found in Big Brook NJ thanks!

Hi, I found all these teeth at Big Brook in NJ I know that they are mostly or all shark teeth but I would like to know more info and species if anyone is willing to help, thanks! (My first post btw)

Greetings Guys! I found this many years ago while on vacation in San Antonio Texas. I am quite the newbie relative to collecting and identifying fossils so some assistance would be greatly appreciated. I have tried to do some research on my own instead of jumping right on here with questions, but am stumped at this point. Below is what I think at this point. It was found in the hill country of midwest Texas out of San Antonio. I really don't know how to date it by periods of time, or the other definitions, but any help would be greatly appreciated. And sorry, this seems to be the best pictures my camera would shoot. Joe ------And this is my best guess. ---from the Cretaceous period, ---Western Interior Seaway Kingdom: Animalia Phylum: Mollusca Class: Bivalva Order: Family: Genus: Species:

I would greatly appreciate any help/direction on figuring out what (if anything) these two objects may be and if they are similar in origin. I was thinking the root of a tooth, but really haven't had much luck in my research but will admit I've not gone far outside of googling as much as I could think of for the region where I found these to see if I can find anything similar that was IDd. I copied the main concerns from FAQs on posting here, so hopefully I was able to provide enough detail for some direction. I can try to get better pictures with closer views if you think it will help, I was anxious and shot these with my iPhone as soon as I got home. 1- LOCATION Greenville, NC Greensmill Run. (GMR) 2- GEOLOGY/Formation Generally this location is part of the york town formation, Miocene-Pliocene-cretaceous 4- ASSEMBLAGE Shark teeth, belemnites, bopods, mouthplates from singrays/skates, whale bone. 5- DISCOVERY I went to a new part of the stream today, it was much higher upstream than I usually venture, with rapid running water. I was walking on what felt like a giant rock for about 20 yards then sand with loose gravel came up so I plopped my stuff and this is one of the finds with lots of shark teeth. 6- CHARACTERISTICS I thought it was an only chipped rock at first but a second look and I thought it was really close to this other item I had found that was much smaller (on the right in the photo) I was thinking maybe some sort of tooth root? Maybe it/they are just rocks? There was really nothing else similar in shape or color in the area today and generally when I dig in other spots along the GMR. The brown color, texture similar to and density being much lighter than a rock for both objects leads me to wonder what this may be?