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  1. A few months ago I had the opportunity to collect a bunch of matrix from the Cretaceous aged (Campanian) Ozan Formation of North Texas in the "red beds". The larger fraction is rich in sharks teeth and other small macro fauna. After breaking down the matrix, I have put it through a number of sieves to facilitate picking and sorting. I have available lots of very fine matrix that made it through my 60 mesh sieve (so it is all smaller than 250 microns or ~0.25 mm). In this fraction I see lots of forams, some ostracods, and some other very small fossils. I am not really equipped to pick and
  2. Visiting fossil collectors from the Odessa school district found the specimen in the first picture and I was reminded of one I found 7 years earlier at the same site shown in the next images. When they asked for the name I had to admit I didn't know. These came from Moss Creek, a nearby tributary of the North Sulphur River and exposing the same deposits, the Ozan Formation from the Taylor Group of the upper Cretaceous. My example is 65 mm long, with a whorl 30 mm X 15 mm. The fragment has a slightly curved shaft, compressed whorl section with a rib index of 4 per whorl height. It h
  3. This tiny tooth came from a tributary of North Sulphur River called Moss Creek. This is Upper Cretaceous, Taylor Group. It's about 5 mm tall. Any Ideas?
  4. ThePhysicist

    Tylosaurus tooth

    From the album: Squamates

    A tooth from a large mosasaur that inhabited the Western Interior Seaway during the Late Cretaceous. Tylosaurus was an apex predator with thick teeth that allowed it to predate on anything in its ecosystem from large turtles to sharks. This particular tooth has clear feeding wear on the tip.
  5. Hello, I made a run the the North Sulphur River yesterday and there are a couple of finds that I’d like help identifying. The first looks like a coprolite to me but I’ve never ID’d one. Please confirm or deny. If it is one any ideas on what animal made it? It reminds me of a small dog poo. I’ve found this vertebrae but I don’t know what it belongs to. I doesn’t look like the mosasaur vertebrae I’ve found in the past. Can anyone help with this? Thanks in advance!
  6. pachy-pleuro-whatnot-odon

    Ozan Formation polycotylid plesiosaur tooth fragment

    Hi all, I got this partial tooth in last week which I bought from a US-based seller claiming it was a mosasaur tooth - though I bought it already suspecting it is not. Having since received the specimen, I can confidently say it's plesiosaur, more than likely polycotylid, as the ornamentation exhibits dense packing of fine striations lingually and a near complete drop-off of striae labially with only some small ones remaining near the base of the crown at great intervals. In a lot of ways this type of ornamentation is reminiscent of that of Jurassic pliosaur teeth. But as the tooth
  7. Jared C

    interesting cretaceous oddity

    It seems that every time I post in the fossil ID lately, it's something my friends found when they were with me - brand new eyes are really good at avoiding the "routine" we get into when hunting, and they produce all sorts of crazy cool finds as a result. Here are some field photos of something I suspect is fish scales - I can ask her for better photos if needed. Ozan formation, mid-campanian of the cretaceous, Texas Here's a side angle I took so that the ridge is more evident: thoughts?
  8. ThePhysicist

    Small Mosasaur vertebra in situ

    From the album: North Sulphur River

    The only way I can find fossils - if they're right out in the open! This one conveniently perched itself on a rock.
  9. Hi everyone! I'm a newer member to the fossil hunting community. I first started as a little kid, but have only really gotten into it over the pandemic as a hobby. I've done some hunting up around Dallas where I'm originally from, visiting famous spots like NSR and POC. For college, I'm currently living in Austin and have checked out a few nearby spots. These past few months I've been frequenting a local creek that runs through the Ozan layer and have been finding some cool fossils/artifacts. The items I am showing you today are collected from two places. The first assortment (lots
  10. Hi all, before I post today's trip in fossil hunting trips, I'd like to know a little better about the ID's. This is a ll from a creek in Austin (central texas) that exposes the Ozan formation (aka the lower taylor marl here) Specimen 1) I'm fairly sure it's a mosasaur tooth, but It's oddly stout. It seems to have two cutting edges, but I'm still just not quite sure how to differentiate Mosasaur teeth from Pachyrhizodus teeth. Which one is it, and why? Specimen 2.) This jaw is likely very modern - i'm thinking Racoon, the only reason it made me curious is the she
  11. An assortment of interesting finds from our hunt today. This was in the late cretaceous Ozan formation (also called the Lower Taylor Marl, I believe) around the Austin area, in central Texas. I'd like confirmation or correction on some ID's 1) I'm thinking Mosasaur tooth for this one, but since it's small enough to maybe be fish, I'm checking anyway. If measurements end up being important for any of these, I can provide them. 2.) I'm thinking Cretolamna for this shark tooth, but it looks like the cusps have two peaks, which is throwing me off. Any thoughts?
  12. Jared C

    Which Ptychodus?

    Hey ya'll Here's a small Ptychodus that my step brother found while we were hunting a gravel bed. Still in the matrix... you can say I'm a little jealous. I'm thinking, based off the ID guide that's pinned, that it could be mammillaris. Let me know if more or better photos are needed.
  13. fossilsonwheels

    Head Scratcher NSR shark tooth

    I got a few NSR shark teeth and this one has me stumped. It’s small at 6mm and not complete but I think an ID is possible given it’s unique features. It has distinct folds and the cusp has an odd bend. I was wondering if it could be a Cretodus tooth of some odd position. That’s my best guess at the moment. I don’t think it’s Goblin or Sand Tiger. Ozan Formation NSR Texas.
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