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Showing results for tags 'cretaceous'.
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Hello dear fellow forum members, I have been offered a bundle of bones and teeth from one of the formations subsumed under "kem kem", although the more blackish ones seem to be of a different preservation than the "classic". There are quite some interesting pieces in there, amongst some turtle bones I think. I would be grateful for any hints on ID you can give me. first some of the tentative turtles.
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From the album: Texas Cretaceous Fossils: Oysters
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From the album: Texas Cretaceous Fossils: Oysters
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From the album: Texas Cretaceous Fossils: Oysters
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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Species level identification obtained from facet count (3-5 prisms labially; ~5 or indistinguishable lingually). See more information in Rempert et al. 2022 - Occurrence of Mosasaurus hoffmannii Mantell, 1829 (Squamata, Mosasauridae) in the Maastrichtian Phosphates of Morocco.
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- cretaceous
- khouribga
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Taxonomy from Pasini et al., 2022. Diagnosis from Pasini et al., 2022: "Body elongate, slightly narrowing posteriorly; sub-pentagonal carapace wider than long and sub-triangular rostrum; eyes rounded, apparently without peduncle; antennulae base rectangular elongate; pereon longer but narrow than carapace; pereonites similar in width and size each than other; P1-P6 with wrinkled furrows dorsally; sub-rectangular P1 and P2 with convex lateral margins and dorsolateral vaults; sub-trapezoidal P3-P6 with convex lateral margins and posterior marginal lateral process; P-1-P-2 elongate meri, slightly longer than combined carpus plus propodus with short, curved fossorial dactylus; pleon narrower than pereon and 2.8 times shorter than pereon; P11-P15 narrow than pereonites, all similar in size and shape, wider than long with acute lateral margins; elongate pleotelson narrower than P11-P15." Line drawing from Pasini et al, 2022: Identified by oilshale. References: Pasini, G., Vega, F. J., Garassino,A., (2022): A new genus and species of Tanaidacea (Crustacea, Apseudomorpha) from the Upper Cretaceous (Cenomanian-Turonian) of Gara Sbaa, southeastern Morocco: Boletín de la Sociedad Geológica Mexicana, 74 (2), A290622. http://dx.doi.org/10.18268/ BSGM2022v74n2a290622.
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Hello, this is a very small raptor tooth I found (I can hardly believe I found it lying there, it is so small) and I have tentatively id'd it as Richardoestesia. It is about 3 mm long. Thanks for any help. Mesa Verde Formation - Wyoming. The last 2 pics were taken through a microscope.
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Hello, I am making a great of in-situ pictures of my fossil hunting trips for this year. We now have a foot of snow in the ground so fossil hunting season is over. ☹️ These pictures occur in Wyoming, Montana, South Dakota and North Dakota. Mostly Cretaceous aged sites but some Eocene from ND. They are mostly tooth related. I hope everyone likes in-situ pics as much as I do!
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- 14
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- cretaceous
- dinosaur
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Another day with mushrooms and fossils in the Kainach Gosau, Styria, Austria
FranzBernhard posted a topic in Fossil Hunting Trips
Hello, again a day-off with hiking, mushrooms and some fossils . Its the same area as about 3 months ago, Upper Cretaceous Kainach Gosau, Afling-formation: A field day with blueberries, some mushrooms and - fossils! - Fossil Hunting Trips - The Fossil Forum (With geological map) Same hike, same fossil zone, but different mushrooms. Because now its time for Boletus edulis! Catch the Boletus! First an easy one: Second not so easy: Total yield of the day: The last four weeks, each Sunday or Saturday, I not only carried home some fossils, but also a good amount of Boletus, a total of about 30 in 4 trips. Note: These trips are not specifically designed for mushroom hunting. Just hiking, prospecting and fossiling at known sites. I just stumble over them, more or less, mostly on or near older tractor trails, as can be seen in the pics above. Can´t get enough of the lovely landscape. The area is about 900 m asl, the mountains in the background are about 2000 m asl. Fossils? Of course! Did a little detailed prospecting in the forest above the fossil outcrops at the forest road below and found this Vaccinites. Incomplete, but quite educative: As found: "Good" side: From above, with two pillars pillars, not good pic: Already very happy with this find, I scratched a little bit with a screwdriver at site 63 (see link above) and found a few more fossils (Trochactaeon). Time was ripe to leave, during walking on the forest road about 100 meters away from sites 63 and 64, I found a small Vaccinites in the driveway. Looked at the cut slope of the road - another one. And a big Plagioptychus nearby. Nearly as found: Best of all, I walked by this spot already at least a dozen times... Summing up, another nice day out with hiking, Boletus and fossils! Franz Bernhard
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- 19
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- afling-formation
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Pitstop on the Road to San Antonio. The Salenia Texana zone.
Mikrogeophagus posted a topic in Fossil Hunting Trips
Last weekend, I made the trip down to San Antonio to tour and interview at a school. Though the drive wasn't all that long, it was enough for me to decide to take advantage of the opportunity and make a visit to one of the most famous Lower Glen Rose roadcuts in the Northern San Antonio area. In recent weeks, I have finally hopped onto the echinoid train and begun rapidly expanding my urchin collection. To keep the ball rolling, my goal was to find at least one decent specimen of Leptosalenia texana. Luckily for me, the layer I was heading to has been dubbed the "Salenia texana zone" for a reason. Local echi hunters will probably recognize this spot pretty quickly. The day was hot, but I'd grown used to the heat after the Texas summer we've had (or are still having?) since May. I first poked around the more accessible parts of the exposure. I wasn't surprised to see dozens of urchin shaped holes dug into the wall; it is a popular spot after all. I steadily made my way across the exposure, prying out the stray irregular echies as I could find them. Half an hour passed and I was still at a loss for completing my initial goal. I decided switch things up and worked my way through some bushes to less friendly spots that others may have not wanted to bother with. As soon as I set my water bottle down, I spotted my first piece of salenia sitting right there next to it. The ornamentation on these things are so alien, they really jump out of the background unlike anything else. Pretty quickly I spotted a whole mess of leptosalenia just erupting from the hardened clay. Thankfully, I brought some tools and got straight to work popping each of them out one at a time. Most of them weren't all that pretty, but the thicker shells on Leptosalenia texana help with keeping them better preserved in a higher ratio than most other urchins (none of my irregular echinoids looked all that great at least). The day continued more of the same and before I knew it, it was time to continue my way down the road with a baggie full of goodies. It's not every day you get to add a genus and three new species to your collection! Pics: Better specimens of Leptosalenia texana Irregular echinoids. Top is Heteraster obliquatus and bottom two are Pliotoxaster comanchei Misc. Fossils. Left to right: Bivalve, Porocystis globularis, and echinoid spine. If anyone knows which urchin that spine goes to, let me know! For those who are wondering, the interview went great! I'm gonna be on the road again to another big city in Texas where I will get to check out a familiar spot (assuming the water level stays low) so look forward to a future report! Thanks for reading
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- 13
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- central texas
- cretaceous
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Ozan Oddballs. Regular Urchin Fragment and Fish Jaw Fragment?
Mikrogeophagus posted a topic in Fossil ID
Took a trip today to one of my new Ozan spots that is rapidly becoming a favorite, despite the headache it is to reach. Although the finds are few and far between, I've always come out with something I haven't seen before. It's definitely been testing my ID skills. I didn't come out with too many things, but I've got a couple I would like to get some informed opinions on. First up is a regular urchin. I've found a few fragments of regular echinoids washed out within a small stretch of creek. Though this is the third I've seen, its the first of this appearance and first to safely make it undamaged (it's a bumpy ride to get in and out). I'm pretty bad with echinoid IDs, but from comparison with the ones I'm familiar with, I think it's a kind of salenia. It also looks like it could be a goniophorus. I don't know the terminology, but the lines of mini tubercles in between the primary tubercles look closer to salenia. They seem to form paired lines. This guy is about 7.5 mm across. If it is salenia, I'm guessing it isn't the typical texana, mexicana, etc. that are found in older cretaceous fms of TX, so I wonder what species it could be if not a new one ! The second specimen I want to share looks like a fish jaw to me. Initially, I was very confused on what it could be. I thought it was tooth shaped, but had enamel unlike any I was familiar with. After some prepping, I think I've found a single tooth socket. Unfortunately, most of the "jaw" had been eroded away. Do you guys think it's a fish jaw? If so, any guesses on genus/species? Thanks for reading and feel free to ask for additional pics!
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- campanian
- central texas
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From the album: Dinosaurs
These small teeth come from a small theropod (a Troodontid) closely related to the Dromaeosaurids (the "raptors"). They likely fed upon small food items like mammals, lizards, insects, etc. -
From the album: Dinosaurs
These strange, incisor-like teeth were originally thought to have belonged to a large Cretaceous mammal. Later discoveries showed that these teeth matched the front teeth of young Tyrannosaurs quite well. Given closely spaced, parallel feeding traces on bones, these "incisorform" teeth likely were used to scrape meat from bone. -
From the album: Dinosaurs
A rare tooth from the Hell Creek formation. Curiously most Ankylosaurian teeth you see online are actually Nodosaurid. This one is the Ankylosaurus. -
From the album: Dinosaurs
Plant roots often intrude upon a fossil's resting place, leaving behind white streaks when removed. -
From the album: Dinosaurs
A theropod tooth I recently acquired from the JRF. Sold as a juvenile Tyrannosaurid, but I'm not fully convinced. -
While these are not very rare, I still enjoyed finding and prepping some Cretaceous turtle material from NW Queensland ,Australia. Lastly I have added a few pictures of an interesting fossil which has a sharks tooth, fish jaw and a section of either degraded bone or Squid material Turtle material Unknown bone or Squid material with sharks tooth Unknown bone or Squid material Fish Jaw on underside of rock Close up of sharks tooth Close up images of bone/Squid material Close up of Fish jaw
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Collected from Woodbine and I'm clueless.
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- cretaceous
- holes
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Hello, is this a fish scale? It is about 1 cm wide at the widest point. It is complete and very nice looking. Any help will be appreciated! Found in the JRF with crocodile, fish verts/teeth, turtles, and some dinosaur related fossils. It is very thin with the enamel (correct term for this?) present on the one side. Thx!
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Hi everyone! I acquired a bunch of Tyrannosaur tips from Hell Creek recently. Most were sold as Tyrannosaur indet. which is what I've been going by for them except the ones with a really thick, almost circular cross section. These three I'm kinda on the fence as they're pretty robust but not circular. All three are Hell Creek but from different localities which I have next to each one. Also when I took the cross section measurements I didn't take those at the end of the base because it was uneven on all of them, being broken tips. So what I did was I went up a little to a complete cross section that was perpendicular to the height measurement and took my cross section measurement there. So what do you all think, can these be labeled Rex? Should I continue to call them indet.? Any feedback is greatly appreciated as always!
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Dug into this park on Tuesday for a few hours. I really have no experience with Mesozoic strata, aside from Coon Creek of Tennesse. The water was inconsistent in it's depth due to a local beaver dam causing higher than normal water levels. Material here consists of unconsolidated clays, gravel and sand. Here are two large bivalves I recovered from the upper beds containing clams. I believe these are Exogyra costata which are common at this location. This tooth belongs to Scapanorhynchus texanus in which the teeth are referred to as belonging to goblin sharks. This is untrue, as this taxa is distantly related to modern goblins but I believe they are within the same family? This is a pair of small bivalves, species possibly being miniscule Gryphaeostrea vomer? A single Agerostrea mesenterica. Finally pictured below, an unknown, based on corrected advice it is a worn Pycnodonte. This trip was long, but the report ended up being brief due to the difficulty I had getting into the productive zones at this site. In which happened to be straight down, through the toughest clay I have ever seen. I did however end up meeting one of the park volunteers named Doug, who was more than helpful, he frequents the area and is very friendly.
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- clams
- cretaceous
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Last weekend I was busy helping my daughter to prepare shells from the pieces of stone that come from the quarry of Eben-Emael (Marnebel). This is the first time prepping for her, I think (but dads are not objective) she succeeded. The aim was to let them rest partly on the stone. Because this is not my area of interest, I gave them to her. Now that they are prepared I regret . But if it sparks her interest in fossils, I'll gladly part with them! Who can help her identify the shells? We took some pictures of her most beautiful pieces together. Number 1
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