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Found 21 results

  1. ID help please

    Found this in Bandera, TX. 3.5” X 1.5” X 1.5”. Looks like it could be part of a jaw bone, but I really have no idea what it is. Any help would be greatly appreciated.
  2. So I am looking for this particular urchin. My grandmother found one when she was a child on the Brazos River outside of Waco TX. Her father sold it to a family friend in the late 1930's and so all I got were the stories of this big round rock that she thought had been "carved by Indians, decorated with dots and snakes". Only much later did she find out that it was a fossilized sea urchin. I am guessing it was a Cidarid, possibly Phyllacanthus or or Paracidaris. All I know is I am determined to find one someday. I would trade my entire collection of fossils for one of those big echies. (If anyone happens to have one just laying around.....let's talk! hahah) . I have been trying to learn the different formations and I stalk the Fossil Forum regularly to learn what I can. When I saw a post by @KimTexan about a Cidarid ID I realized she had found what I had been looking for! (Kim, I am so very jealous of your find!) So, my husband and I set out on one of our "little hunting trips" - we like to take two or three day excursions around Texas - he gets to go ghost hunting at night (we stay at haunted hotels and B&B's) and I get to go fossking during the day. I mapped out some likely spots and we set out from our little town of San Marcos heading north to HIllsboro (excellent home made icecream at A Tisket A Tasket on the Courthouse Square) and then to Granbury where we stayed at the Nutt House Hotel. Stopped at two spots that I thought likely to find my urchin but alas. No luck. Found some nice heart urchins and some "new to me" oysters and a couple of nice chucks of ammonites. I think this was Washita formation? I am using the Rockd App on my phone to try to pinpoint formation since I am definitely not familiar with formations, especially up "north". One of my happy finds was a Pinna Comancheana (far left "cone shaped" fossil) I've only found one other of those. Next morning we headed up to Lake Benbrook Spillway with a stopover at a large roadcut on "Scorpion Hill". This I believe was Glen Rose as most of the finds were heart urchins and gastros. Nothing new to me here, but I did find some better specimens than I had collected previously. Lake Benbrook was a neat place. Two other fossikers were out, I went over to say hello, wondering if they were experienced hunters and knew the area, but nope, they were new to Lake Benbrook, just as I was. I did not get to catch up with them after to see if they found anything good. I was amazed a the large ammonite impressions in the limestone beds. My camera wasn't working, so alas, no pictures. Found lots of nice Oxytopodiceras fragments and a couple of others I haven't identified yet. Pics in next post:
  3. Figured we'd brave the cold today for a chance at some echinoids, first the leptosalenia texana.
  4. Our second summer trip was up to the Glen Rose, TX area. We rented a great place via Home Away that had a fossil hunting spot. Super convenient when the heat was >110F. We hit the Dinosaur Valley State Park and went fossil hunting at the property we stayed at. Found lots of great cretaceous fossils. Still trying to identify a bunch of them. We found heart urchins, devil's toenails, I think there are some Oxytropidoceras fragments, etc. Oxytropidoceras fragments? Not sure what this is yet.
  5. Albian Vertebrates

    A few years back I was collecting in the Lower Member of the Glen Rose Formation. That's lower Albian in age. The sediments are shallow marine limestones and clays. Shark and other types of fish teeth are not common but do show up. I also have various bits of turtle bone. Attached are two pictures showing some of the more common teeth which I have references for and will be able to identify with no problem. With them is a small vertebra and that is what I want some help with. I look forward to your responses.
  6. Glen Rose Formation Fossils

    Hello all, I am working on my thesis covering fossils of the lower Glen Rose Formation. Could anyone possibly help me identify these specimens? These are heart urchins which I suspect to be Epiaster whitei... Could these be heteraster instead? They range from 3 to 5 cm in diameter and are mostly crushed or broken...
  7. Crustacean pincer

    I'm pretty dang sure this is a crustacean pincer. I'm wondering if I can get any other information about it. Also whether or not it is a rare find. I've hunted fossils in Austin since I was a kid but mostly just picking up the many many oysters, brachiopods, etc that are a dime a dozen around here, with the occasional "big find" (sea urchin, etc). I've never seen anything like this, but a little research at least shows that are known to occur. I found this in NW Austin, specifically in Great Hills park on the edge of a stream bed. The area is limestone. I'm finally getting around to actually learning the names of fossils/rocks/ets that I've seen my whole life. So I *think* this is Glen Rose limestone, but don't hold me to it! The limestone there is marly (new word for me!) and very clayey.
  8. Could someone please help me identify this fossil. I'm not sure if it is a plant or feather. My instincts tell me it is some sort of filtering sea plant. I found it while fossil hunting with my boys on top of small mountain approximately 3 miles west-northwest of Camp Wood, TX. The geologic atlas of Texas indicates that the formation is the Lower Devils River / Upper Glen Rose (Lower Cretaceous). The fossil is 1.5" x 0.5".
  9. The ugliest find of the day

    I hesitate to ask about this one because it's so strange and ugly...surely just an odd rock? I found the two pieces in front of my house on the creek bank about a foot apart. The pieces don't fit together perfectly, but I saw no other pieces around that looked the same, so I grabbed them both. I found a lot of fossils today and photographed even more that were impossible to move, but none as odd looking as this one. I'm sorry that I don't yet know how to give a good description of where I am, formation wise. Glen Rose has been suggested. I am just a few miles north of Dripping Springs TX, west of Austin. I did attempt to search for similar things but, to be honest, I couldn't think of a term to use to describe it. Any suggestions?
  10. Lower Glen Rose Basal Reef Fossil

    Not sure what this is. A gastropod mold or ammonite or just a concretion? I didn't cut it out. Still on the limestone roadside cut.
  11. Fossilmania XXXIV - Glen Rose, TX

    Presented by the Dallas Paleontological Society. See their web site at Dallas Paleontological Society for more details.
  12. I need some help identifying these two specimens. I have collected and cleaned at least 50 of each specimen. The majority of them were found in the upper Glen Rose formation of Edwards, Real and Uvalde County Texas. I've been told that they are both called "deer hearts," even though they look different. Given the different physical characteristics (deep lines on the right specimen and "ears" on the left specimen), I'm guessing that they are different species. My best guess is either Arctica roemeri or Protocardia texana. Thanks!
  13. I stopped at the first road cut east of Utopia, Texas off of Highway 1050 to kill some time before heading back to the ranch. While loitering fossil hunting, I found these three fossils. The formation is Kgr (Lower Cretaceous / Trinity Age / Glen Rose). Picture 1: Bivalve Picture 2: Gastropod. I've found hundreds of these, but this is the largest one to date. Picture 3: more Bivalves. Are these different species?
  14. First post...here goes. For the past 15 years, I've worked for Smith Bits (oilfield drill bit manufacturer) and have drilled thousands of wells all around this planet. So in a sense, I destroy fossils for a living which is exactly the opposite purpose of The Fossil Forum. So, to add "yang" to my "yin," I started collecting fossils from all over the Texas Hill Country on or near my ranches. I take them home and clean them with my wife's dental hygiene tools while sitting in our pool on the weekends. It's a relaxing hobby with the only downside being that the calcium carbonate raises the pH in the pool. So, I'm constantly having to add muriatic acid to the pool chemistry. Plus, my two boys love digging in the dirt. That being said, I need a community opinion on the correct identification of several fossils that I've found. Group 1 Found in Lower Cretaceous (Trinity Age) Glen Rose Formation off Highway 55 in between Barksdale and Rocksprings Texas. Are they Loriolia texana? Group 2 Found in the Lower Cretaceous (Trinity Age) Glen Rose Formation off Highway 1050 in between Utopia and Leakey Texas. Notes: Although most are damaged, the largest one of the group has a depressed unpaired ambulacrum. The upper-most right specimen has a hole bored into the bottom side of it. Are they Heteraster obliquatus? Group 3 Found in the Lower Cretaceous (Trinity Age) Glen Rose Formation off Highway 1050 in between Utopia and Leakey Texas. Left: Phymosoma texanum? Middle: Club shaped spine? from Loriolia texana or what else? Right: Porocystis globularis? I know it's not an echinoid, but found in situ approximately 3 inches away. Thank you in advance for your help.
  15. San Antonio Glen Rose Finds

    Not much of a story-teller, so here are my better finds from my first trip to the glen rose formation (said to be the salenia zone) Whole gastropods and crushed heart urchins littered the ground all around the exposure, but i was particularly interested in a very ornate regular echinoid i'd never seen in person before, Leptosalenia Texana! My better finds: gastropods, neithea, tube worms, heart urchins, leptosalenia, porocystis algae balls, bivalve casts, and some oyster bits. My Leptosalenia: An unkown gastropod (?) covered in tube worms: And my bonus, two small coenholectypus approx. 10mm across
  16. I have a couple of Coenholectypus from the Glen Rose which have the morphological characteristics of Coenholectypus nanus as described by Cooke, 1955. Some Cretaceous echinoids from the Americas. Geological Survey Professional Paper 264-E, page 96. In an aboral view, the periproct is clearly observed as a notch on the side of the test. It winds around the ambitus and terminates about three fourths of the way to the peristome. It is not Coenholectypus planatus. This is one of the specimens I wish to include in my book on Texas Cretadeous echinoids. However, I am just a little hesitant to classify it as Coenholectypus nanus as Cooke emphasizes that the examples from the Pawpaw rarely exceed 10 mm in diameter. This is remarkably close in size to a morphologically very similar species that Dan Woehr finds in the Boquillas. The ones I have are around 21.5 mm in diameter. Has anyone found examples in the Glen Rose that are similar in size to the ones that I have, or does anyone have a good idea as to what my examples may be if they are not C. nanus?
  17. Texas Hill Country Hunting

    A friend found out about my hobby of fossiking (particularly urchins) and says "oh, there are hundreds of the round urchins on my property, come on out!" So, I did and was initially disappointed to find out that what he thought were round urchins, were in fact algal fruiting bodies or porocystis globularis (as I discovered a while back when I first found the fossil forum, thinking I had some cool eggs....) So finding literally hundreds of these globularis was quite cool, but I wanted urchins! Now, also, there were urchins. Lots and lots and lots...of heart urchins. Which I like. A lot. But I also find them quite frequently where I am. I was wanting ROUND urchins! I havn't found but a few of those in my huntings. So I kept hunting. And was rewarded with a few small but nice phymosoma texanum round urchins. Yay!! And a mess of nice gastopods and bivlaves (some really adorable, yes, adorable, small deer heart clams) .All in all, a good days hunt!
  18. How common are echinoids? I have found quite a few near Waring Texas.
  19. Shark Tooth Albian Of Tx

    Earlier this year I ran across this tooth in the Glen Rose Formation of Central Texas. It is from about the middle of the formation (Unit 3, Upper Member) and would be Lower Albian in age. Note that it was found along with a few small round pychnodontid(?) teeth. For scale the red arrow is about 4.5mm in length. Not the small cusp between the large and outer cusp. There is a faint foramen on the lingual face. I will try and get sharper photos up if needed. The closest I have come is Cretolamna appendiculata only in that it fits the age and has a few characteristics that match. But all the images I find in books or online are for much younger specimens. Any ideas?
  20. Found this in the Lower Cretaceous - Glen Rose Formation Great echinoid. Any help identifing would be appreciated. Bill Thompson Seguin, TX
  21. Tracking The Glen Rose

    January 2, 2010 The Lower Cretaceous Glen Rose Formation (Kgr) of Central Texas is roughly 110 million years old. Its classic exposures look like man-made steps or solid blocks that are occasionally interrupted with softer rock or marl. The formation is typically divided into upper and lower units by a layer of Corbula fossil clams. Just below this layer was the destination I wanted to find for my first fossil hunt of the year. It takes its name from the isolated occurrence of an ornate fossil sea urchin - the Salenia texana zone! A bright dawn had not yet thawed the frost when I headed to meet my friend, Bob. He was excited to show me a new quarry where he had found echinoids the previous month. When we arrived at the site, he oriented me to the most productive layers in the formation, and we started hunting the youngest strata. I immediately began to find fossils. Erosion of the shelf, we were searching, left fragments of 'heart' urchins, gastropods, and bivalves everywhere. I was trying to be selective, looking for the better preserved specimens, but it was hard to pass up an unusual oyster or clam. Oyster (Ceratostreon weatherfordensis ?) with the partial mold of the shell where it was attached Juvenile Arctica sp. clam Soon, Bob was calling out, "Spiny urchin!" with periodic repetition. He wryly commented, "I just seem to be a magnet for those things." Meanwhile, I gouged my elbow on rock as I crawled along the ground. Glancing to check the damage, I spied one of the small, prickly echinoids. It was just one of those small moments...that capture your love of the outdoors. The late morning light was perfect, and when I reached for the camera, a little heart urchin caught my attention. Even better. So, I digitally captured the two 'echies' before putting them in my box. We finished the morning and the rest of the layer with several more echinoids and a partial crab claw. Loriolia texana echinoid with Orbitolina texana foram Heteraster obliquatus echinoid among Orbitolina texana forams Loriolia texana echinoid Some finds after a little cleaning From this area, we moved down into the "zone". A hard limestone bench capped a six foot thick layer of softer rock. It weathered into chunky clay before a transition back to solid stone. Even within this bracketed strata, I noted some subtle differences in the coloration and hardness. But meanwhile, Bob had started finding echinoids while I was "getting the lay of the land". The marble-sized Leptosalenia texana were eroding with regularity from the top half of the zone. A small, disk-like foram, known as Orbitolina texana, littered the ground. Scattered among them were a variety of different gastropods and a non-fossil caterpillar. Leptosalenia texana with forams and gastropods Caterpillar Leptosalenia texana echinoids Bob previously mentioned that he had found a couple of plates (a part of an urchin's shell) from a very uncommon echinoid on his last visit. So, as we leaned against the wall of the formation, I asked him what else he remembered. He described them as being more whitish in their preservation than some of the other finds we were making; and when he said it, I thought of the variation in the rock I had seen earlier. We had already found fragments of the spines which the 'Salenia' urchins used to protect their shells; but I was not tracking them - we were tracking a cidarid echinoid! In the Glen Rose Formation, two species have been described: Phyllacanthus texanus and P. tysoni. So, I grinned when I saw part of a larger, bumpy spine sticking out of the rock. About that time, Bob suggested that we move over a short distance to a fresh spot. Hunting anything, with success, requires identifying and following certain clues. In the new spot, I put my suspicions to the test. A few feet below the caprock, I found a lighter layer that was somewhat hidden by runoff from layers above. I flaked away the debris to get a better look and immediately started to find several spine fragments! I announced my excitement, "Cidarid spines!" Echinoid spines 5 cm echinoid spine in matrix A slightly elevated heart rate accompanied the anticipation of following signs in the rock. Then, I had an adrenalin spike when Bob called out, "You need to look at this." He walked toward me, and in his hand were 3 connected plates of our cidarid urchin quarry. I showed him some of the spines and explained the "hidden" layer we could focus on. I thought we were close to our treasure, and he asked if I had "covered" the area just to my right. I told him, "No, go ahead" as I knelt down for a look at some of the spines eroding from the ground. "JOHN!" I turned to see him stand up beside me with a golf ball-sized, knobby echinoid in his palm! "You did it!" I yelled. "You really...did it! Way to go!" We stood a moment, looking at the rare urchin with a range of emotions. Then, he handed me his prize while he went back to get his camera. I put it back in the spot he picked it from and took a few photos. When he came back, more photos ensued...it was an amazing Texas find! Although I know quite a few cidarid urchins have been found through the years, I am personally aware of just five...including Bob's - certainly not a common discovery. Checking a few references later indicated he had found a Phyllacanthus texanus! Bob's discovery Phyllacanthus texanus echinoid Well, as you can imagine, the adrenaline of discovery had us quickly back in search mode. More spines were found. I ravenously scanned the layer we isolated. Then, my "heart jumped in my throat" when I spotted the partial test (shell) of another Phyllacanthus! So close...but not this time. My Phyllacanthus texanus partial test Late into the fading light, we searched to no avail. The cool wind and darkness ended our efforts, and we congratulated each other with our goodbyes. Hopefully, with some weathering and heavy rain, we will get another chance to track the rare fossil urchins of the Glen Rose.