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Found 11 results

  1. Good morning! Asking for help identifying 3 fossils (two on one rock) found in riverbed in Val Verde county near Del Rio, Texas. The first 4 images are of one rock with two features. The shell imprint might be a Pecten Texana bivalve (from online fossil ID site)? The other feature might be some form of sponge like the family Clionaida?? Both features are covered with fine crystals giving a lovely glitter - any thoughts on how/why that process happened? Final three images I think are a random rock, but the shape does mimic an image online of a vertebrate toe-claw of some sort, so curious about this. Thanks in advance for any thoughts!
  2. I havn't been fossil hunting a very long time....I've only been really serious about if for the last 6 years. And in Central Texas, there ARE a lot of fossils, but it is hard to find a new spot that has not already come under the hunting radar of the many fossil hunters in this state! And some of them have been at it for a LONG time so they've usually found all the really good spots! Which is one of the reasons I love the Paleo Society of Austin, because I learned of some of these good spots from them....they are typically still productive, if not over hunted, so I love finding stuff there. BUT.... I've been hoping to FIND A NEW SPOT. Somewhere no one has found, at least not that I know of in my limited engagement with fossil hunters in this area. New hunting grounds are far and few between unless you are near an area that is being built upon, and there are some of those, definitely. but not near me. However, I'd been finding interesting "potholes" of Del Rio Formation in a local river and the other day, I decided to go a little further upstream than I normally do and LO AND BEHOLD.....the motherload! A whole wall of the grey blue mud I'd been looking for! Now, whether it was productive or not was the next question. There were millions of Ram's Horn Oysters (Ilymatogyra arietina). Maybe a billion. It's hard to count that high. A lot, suffice it to say. So, was there anything other than oysters?? After a bit of trying to see past the oysters, I found a good sign: a little Plicatula bivalve. They are lovely little cat paw looking oysters. A little more searching and I found one of the things I was hoping to find - a heteromorph ammonite called Mariella worthensis. So that gave me a big clue that I had indeed found the Del Rio Formation that I had found chunks of further downstream. What's interesting is it is very similar in fauna to the Waco Research Pit stuff, but with more oysters and less of all the other stuff typically found there, so it is not quite as productive as the Waco site, but it's yielding some nice stuff. I havn't found any Cretolamna shark teeth or Goniophorus echinoids yet (but I have found plates and spines of Gonio, so they are there somewhere....). So I hauled home a bucket of dirt to look for the little stuff and I found some really lovely tiny things!! The next week I went again, trying to get a little hunting in before the REAL summer heat set in (we've had 45 days of over 100 degree temps. It's been brutal, even to use "used to hot summer" Texans). And Happy Day - I found a nice "large" ammonite Otoscaphites subevolutus and a very nice Mariella (the "biggest" I've collected so far), and something interesting, what I would not have known to look for except a friend clued me in that I might find tracks in this formation....and I did! An arthropod I'm assuming. And of course, I took home another bucket of matrix! 1/2 inch Otoscaphites subevolutus Mariella worthensis 3/4 inch Tracks Here are some of the nice micro matrix finds. Lots of tiny crab claws! And the floating Crinoid Roveocrinus.... Some neat little gastropods: but my favorite thing to find is the starfish stuff. In prior spots I have found more brittlestar stuff, but here, not so much. These I think are regular asteroidea fragments. Nothing so great as a whole one...YET! I did find one little shark tooth - possibly Leptostyrax? And one final nice find that is sadly only a section - an ammonite Engonoceras serpentinum - which in all honesty, I didn't even realize what it was till I go home and cleaned it up. I thought it was just a chunk of bivalve till I saw the sutures! Unfortunately, I am not going to post any pics of the area because I want to keep it to myself for a little while at least. I know there are people always searching for signs of a new spot...heck, I was one of them till I figured out how to read a geological map. Someday I'll post some pics of the river...it's quite pretty. Hopefully my honey hole will continue to surprise me!
  3. Here are some of my finds from spending a few hours on Wednesday, October 26th, in the Graysonites wacoense Zone of the Grayson Formation, Washita Group of north Texas (Early Cenomanian, ~97mya). This particular site exposes a micromorph layer full of thousands of tiny dwarfed Mariella bosquensis and M. rhacioformis ammonites plus a wealth of other taxa like various urchins, brittlestar fragments, shark teeth, many gastropods & pelecypods, etc. Those familiar with the Del Rio exposures of further south in central Texas (particularly the now closed-to-public Waco Pit in McLennan County), should recognize much of the fauna to be found at this site as it is laterally equivalent to those and faunally nearly identical, differing only slightly in the rarity of homomorph ammonites at this site vs further south, as well as slight differences in preservation/lithology. The following is just a fraction of what I found: One of thousands of dwarfed Mariella bosquensis (Turrilitidae) ammonites: Cretalamna cf. catoxodon (Otodontidae) shark tooth, this species was first described from the Cenomanian of Western Australia by Siversson et al., 2015 where many species were split out of the broad C. appendiculata: Goniophorus scotti (Saleniidae) sea urchin fragment: A tiny Stoliczkaia texana (Lyelliceratidae) ammonite: Arm fragments of Ophiura graysonensis (Ophiuridae), a brittlestar. I hope to find a complete specimen or at least a central disk at this site soon: Another Goniophorus scotti (Saleniidae): Some more dwarf Mariella bosquensis (Turrilitidae) ammonites: Found in just a few seconds of searching in one spot: Neithea texana (Neitheidae) scallop: Praescabrotrigonia emoryi (Pterotrigoniidae) clam: cf. Margarites (Margaritidae) gastropod: A very small Cymatoceras hilli (Cymatoceratidae) nautiloid: Imprints of the pellet-lined burrows of mud shrimp (the ichnogenus being Ophiomorpha). These almost certainly belong to Meticonaxius rhacheochir (Micheleidae) which is known from both the older Pawpaw Formation and the younger Britton Formation, the latter of which contains abundant identical Ophiomorpha which have been found with the bodies of M. rhacheochir preserved inside: Chondrites trace fossils: Bivalve shell fragment conglomerate slabs consisting mainly of Texigryphaea roemeri oyster and Neithea texana scallop fragments: A mass of white nodules which I presume are likely fossilized rhodoliths, structures made up of the calcium carbonate secreted by coralline red algae which would freely roll around on the sea floor: Hundreds of Texigryphaea roemeri (Gryphaeidae) oysters: The layers above the micromorph zone abound with more typical Grayson Formation lithology & fauna, such as this Mariella rhacioformis (Turrilitidae) ammonite fragment. This species occurs in abundance in at the site in the more typical layers and occasionally as limonitic/pyritic micromorphs too: A portion of a typical non-dwarfed Mariella bosquensis (Turrilitidae) ammonite: Protocardia texana (Cardiidae) clam:
  4. A fossil hunting buddy informed me today that the Waco Research Pit is now permanently closed to the public. I called the Army Core and confirmed. Such a shame. Thankfully got to visit a few times. Also a real shame since the Army Core can research the same Del Rio fossils in the dam spillway area (also restricted) as they see fit. You'll be missed, Research Pit.
  5. historianmichael

    Del Rio Clay Mystery Shark Teeth

    These shark teeth were found in the Lower Cretaceous Del Rio Clay. I have seen posts on here that have identified Cretodus semiplicatus and Cretalamna appendiculata as the common shark teeth of the Del Rio Clay; however, none of these teeth seem to match up with photos I have seen of those teeth. Could these teeth simply be from a different position in the mouth than the ones in the photos I have seen? The measurements listed below are from the top of the root to the tip of the crown. Any help would be greatly appreciated. Thank you in advance! #1- 9mm #2- 7mm #3- 5mm
  6. My assistant and I checked out a place in Round Rock, Texas where the Del Rio, Buda, and Eagle Ford are close by. I read about the area in some online papers and I used Google maps to make a plan. I'm new and learning, and we try to explore a couple areas a week. (I'd be happy to share the address if any local folks want to check out the area.) We followed a drainage creek to a bigger creek, and then found some interesting creek walls. I was happy to see something besides Austin Chalk. We trekked through waist deep water and saw some interesting cliffs. We always find frogs, snakes, and lizards too. I didn't find any interesting fossils within the creek walls or floor. But I did find a rock on a gravel bar with some teeth in it. The big one is about 1/2 inch, and the small one is 1cm. I have no idea what they are from. I tried to take pictures using a ruler for scale. Using a little microscope camera I can see the little tooth has a cool serrated edge. Any ideas what the teeth could be from?
  7. Howdy! A few ammonites that are eluding me as to ID. Anyone with more knowledge of them, I would appreciate some confirmation or negation of my attempts! @erose @JohnJ @Uncle Siphuncle From Waco Pit Del Rio Formation. Thanks!! Possibly Tetragonites brazoensis? Or Adkinsia ? Second one Mantelliceras wacoense? Or maybe Paracycloceras? Not a great pic, but a little bit of a close up on the suture of this one:
  8. Rayminazzi

    First fossil of the (past) year

    Haven't really been able to do much fossil hunting between my job and a herniated disc that meant I couldn't bend down for many months now but finally felt good enough to go to a fairly easy location. This is a spot where the Buda formation meets the del Rio clay. Not sure which this came from but I think del Rio is more likely. Apologies for the image quality. My light died and I had to use a flashlight
  9. Joe Salande

    What are these?

    Can any body help me identify these. I've found a few crinoids in the past but this is the first time ive found something different . These were found on a hunting trip out of Del Rio texas. The first pic is by itself. Picture two and three are the same rock, but from different angles. Any thoughts would be appreciated. Thanks Joe
  10. Joe Salande

    What are these?

    I'm a rookie relative to fossil hunting. I think I know what this is, but i don't want to get ahead of myself. I'm thinking a Baculite. What do ya'll think.
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