Search the Community
Showing results for tags 'oligocene'.
-
From the album: Fin Lover's South Carolina Finds
-
- 1
-
-
- odontocete
- oligocene
- (and 3 more)
-
This is a merycoidodontid jaw fragment from the Oligocene of South Dakota, but it hasn't been identified to genus/species level. The specimen is 24.5mm long and 32mm across. Thanks in advance for any proposed IDs Othniel Just to clarify you may have seen a fossil ID thread with similar pictures to this, also started by myself. However, as suggested by FossilDude19, I will be splitting them up so as to not restrict answers. If anyone could explain how I get rid of the old thread, that would be much appreciated as well.
-
Hello everyone. I am after the ID of these solitary corals. Location: Eastern Bulgaria, Rhodope Mts, south of Kardzhali Age: Oligocene, did not manage to pinpoint the exact location on the geological map, due to poor quality map. As per a local expert, the horn-shaped coral is a Placosmiliopsis bilobatus and the age is Oligocene. The species is supposed to have polymorphy; some are roundish, while others form slightly the number 8. I found a topic on a Spanish forum but I fail to understand the key elements determining the species. Through the help of Google translate, I understood that I have to create cross sections (vertically? horizontally? I made both) but I do not understand what I should observe. (Spanish text in the end of this post) Additionally, as per minedat, the P. bilobatus is supposed to have gone extinct up to Priabonian. This is the reason I started searching since one fact is against the other. The horn-shaped coral is approx an inch in diameter and 1.25" height. The discoid coral has a diameter of 1.75" and 0.25" thick. Both were cleaned with toothbrush and KOH. @fifbrindacier said that @oyo and @HansTheLoser might be able to help on this topic. I would appreciate your opinion. Thank you! "Placosmiliopsis: columnella laminar profunda / Pattalophyllia: columnilla trabecular. Solo hay que cortarle a un cucurucho su rabito y pulirlo un poco (con una muela de afilar cuesta poco), para ver si tiene una columnilla en lámina continua o una columnilla también lineal pero por una amalgama de trabéculas.... como en las últimas fotos de los links que ha puesto Elotro... ....para mi que es Pattalophyllia." This what it is supposed to be Placosmiliopsis bilobatus. There are some noumoulites or other foraminifera on top of it. Horizontal section Vertical section The other type of coral, found at the same locality.
-
Marine snails of the Lincoln Creek Formation
Neanderthal Shaman posted a topic in Member Collections
Hey all, Been absent from the forum for a while, life's been busy. I thought it would be fun to show off some of the deep sea marine gastropods I've found from 2 Lincoln Creek Formation exposures. Top: Whitneyella lincolnensis x 2, Priscofusus chehalisensis Middle : Turricula washingtonensis x 5, moon snail x 4 (either Natica sp. or Polinices sp., hard for me to tell) Bottom: Exilia lincolnensis x 3, moon snails x 2
- 3 replies
-
- 6
-
-
- lincoln creek fm
- oligocene
- (and 1 more)
-
From the album: Fin Lover's South Carolina Finds
So close to being perfect!-
- 2
-
-
- angustidens
- oligocene
- (and 3 more)
-
I have seen a lot of isurus retroflexus, but this one looks more barrel shaped where the enamel meets the root.
-
Hello this is my second post on the forum I might be going on fossil dig this summer at my heritage guest ranch in Nebraska badlands and I was wondering what carnivores I can potentially find, and what are some of the most common finds in the carnivore and herbivore group? Also, anything else I need to know before doing this fossil hunt?
-
Anyone have an ID for these Lincoln Creek Formation Gastropods?
Neanderthal Shaman posted a topic in Fossil ID
Normally I would use the Burke's paleontology database to ID these, but they have informed me that it may be months before they can get their database system back up and running again. Lincoln Creek Formation, Grays Harbor County WA, oligocene. Largest one measures around 2 cm.
-
I found a really interesting bone a week ago. Tonight I found a Research paper. Oligocene pancheloniid sea turtles from the vicinity of Charleston South Carolina U S A A Map of where these Sea Turtles were found: A photo picture of a right Humerous of a turtle named Carolinochelys wilsoni. It is approximately 16 cm in length, My find, basically a distal half of a Sea Turtle humerus is 8.2 cm. I am feeling good tonight. Sharing the joy. Morning coming quick. Going out hunting at 5:30 AM. Goodnight, Jack
- 6 replies
-
- 8
-
-
-
- oligocene
- sea turtle
- (and 1 more)
-
Hello everyone! Earlier this year, in August, I went fossil hunting in the White River Formation. This jaw was one of the first specimens I found. Unfortunately when I found it, it was actually in better shape... When I found it it had obviously been out in the weather for quite some time, and so it was kind of fragile. I was not thinking, and just took it out of the ground, hoping I could put most of the pieces together later. I know it was a dumb decision, and I won't do it again (hopefully...). Along the way, I lost some parts, and so now it is not near as complete as it was. I am thinking it looks like Archaeotherium, but just thought I would ask for some other opinions. I don't know if it is possible to ID it down to species, because it is not super complete, but I would at least like to know what genus it is from. Specimen Length: About 3 Inches Location Where Specimen Was Found: Crawford, NE More specimens to come! Thanks, -Micah
-
These two (partial) bones were collected two summers ago (2021) on private land in Weld County, Colorado. They’re from a super fossiliferous bit of exposure which, based on the Oreodont fauna, is likely to be part of the Poleslide Member, which dates to the early Oligocene. These bones have puzzled me since I collected them, and I had for quite a while hypothesized that they must be some sort of ungulate metatarsal. I decided to pull them out again tonight, and having more experience with osteology generally I have decided that these look decidedly avian - specifically, the proximal ends of a right tarsometatarsus. The White River Formation has a rather diverse formally described avifauna: Benton et al. (2015) lists six genera in five families along with several different morphologies of bird eggs in The White River Badlands: Geology and Paleontology, however only one family (the Bathornithidae) has more than one described genus. Bird fossils are well-documented from the WRF, and incidentally quite a few avian holotypes have been described from the White River Formation in Colorado, so perhaps the preservational bias favors them more in that general region. However, bird fossils are simply generally rare in the fossil record due to their delicate nature, so I thought I’d post on the forum before I make a (relatively) extraordinary claim. Now, these two bones aren’t in any way associated, but they’re the exact same sort of bone. They’re identical (with the exception of the shorter one being slightly larger) - same bone, same taxon (as far as I can tell, the shorter one has some weathering). This is what puts me off even more - what are the odds that not only did I come across bird fossils, but that I independently found the exact same end of the exact same bone from the exact same avian taxon in the same week? Tarsometatarsus bones do seem to be a fairly commonly preserved isolated element for fossil birds, many genera are described based of a single tarsometatarsus and the same summer I found these I happened to find an avian tarsometatarsus in the Hell Creek Formation. But it would still be odd. Here are the pictures: I should also add that these bones are in fact thin-walled and hollow, though getting the camera to focus on the broken ends is difficult. But that doesn’t automatically make them avian, bones are fairly frequently hollowed out by simple decay. Below is an image from Benton et al. (2015), with an illustration of the holotype tarsometatarsus of Badistornis aramus, an extinct relative of the living limpkin, for comparison: My bones actually compare quite well to this illustration, though there are differences so I wouldn’t assign them to this genus/species even if I could confirm that they are bird tarsometatarsi. I also don’t think that they’re Bathornithid bones, even though those are the most famous birds from this rock unit. Of the genera from the WRF only Bathornis has a known tarsometatarsus, and it’s both morphologically very different and much larger than my bones. I’ve also ruled out the Galliformes and Falconiformes (two bird orders with representatives in the WRF), again assuming these are avian bones. I think that it compares best with wading birds such as herons and, indeed, limpkins. But this is mostly informed speculation I admit. So does anyone have any thoughts? Is there a more obvious answer for what this bone could be, or does it truly have avian affinities in your opinion? Looking forward to hearing everyone’s thoughts. References: Benton, R. C., Terry, D. O., Evanoff, E. and McDonald, H. G. (2015). The White River Badlands: Geology and Paleontology. Indiana University Press.
-
I've got this piece of Oligocene amber from Montana which has a very odd hole running straight through it. I at first though that this could be from where the resin seeped out around a twig of its tree and the twig eventually rotted away, leaving this hole. Do you think that could be the cause? The hole was filled with dirt before I cleaned it.
-
A few odds and ends I picked up on Sunday from Twin Beach, Washington. The Burke Museum Paleontology Database is still down (PLEASE BURKE, GET IT BACK ONLINE!!!), so I can't really ID the snails right now, but one of them is clearly a moon snail, and if I had to hazard a guess, the big one is maybe some sort of spindle snail? Prepping it was very easy and zen. And of course a Callianopsis clallamensis ghost shrimp that the beach is so well known for. Till' next time!
- 1 reply
-
- 8
-
-
- oligocene
- olympic peninsula
- (and 2 more)
-
Found ex-situ, so I have included both Oligocene formation possibilities (Chandler Bridge Formation and Ashley Formation). References: Cicimurri, D. J., & Knight, J. L. (2009). Late Oligocene sharks and rays from the Chandler Bridge Formation, Dorchester County, South Carolina, USA. Acta Palaeontologica Polonica, 54(4), 627-647. Gale, B., Gale, P., & Gale, A. (2020). A Beachcomber's Guide to Fossils. University of Georgia Press. Miller, A., Gibson, M., & Boessenecker, R. (2021). A megatoothed shark (Carcharocles angustidens) nursery in the Oligocene Charleston Embayment, South Carolina, USA. Palaeontologia Electronica, 24(2), 1-19.
- 1 comment
-
- 1
-
-
- angustidens
- ashley formation
- (and 4 more)
-
From the album: TEETH & JAWS
© Harry Pristis 2023
-
- 1
-
-
- entelodontidae
- oligocene
- (and 1 more)
-
Hello all, I have some teeth that have accumulated from some past trips that I haven't been able to find an ID for. I appreciate any input people might have. First, there is this fish tooth from the Moodys Branch Formation (Eocene) of Mississippi. As difficult as bony fish teeth are I thought I'd see if anyone could ID this one since it is quite a nice tooth. Closest thing I've found is Eutrichiurides but it isn't as compressed as figured plates. Attempting to show the double carinae. The following teeth are from the Byram Formation (Oligocene, Rupelian) of Mississippi. I figured Carcharias on this one.
-
In North Florida, we looked for Blue Agatized Coral and found some in a stream. At home we cut and polished them. We put together a video showing the whole process: https://youtu.be/aae9XqJPMCU best wishes, Lloyd
- 8 replies
-
- 8
-
-
-
- agatized coral
- blue agatized coral
- (and 2 more)
-
Micro matrix for trade- Old Church and Hallencourt
fossilsonwheels posted a topic in Member-to-Member Fossil Trades
I have small amounts of micro matrix that I’d be willing to trade. My preference would be to trade both to one person for ease of shipping. Old Church Formation, Oligocene Virginia I had separated some matrix before searching any of it specifically to trade some and rethought it after I found a Pristiophorus rostral lol I decided to not search it though as the intent was to give somebody else a chance to have fun searching. It is very productive matrix. I can see a couple of shark teeth in there. Among the possible shark teeth are Notorynchus, Squatina, Carcharias, Alopias, Isurus, Galeocerdo, Galeorhinus, Sphyrna, Carcharhinus, Pachyscyllium, Hemipristis. You are also likely to find a few Batoid teeth like Dasyatis, Raja, and Myliobatid. I really enjoyed this matrix. It’s a pretty diverse Oligocene fauna with good density of shark material. I did a report here on my searches for reference. Hallencourt France, Cretaceous Tiny matrix, tiny and very sparse fossils. You’ll find some invertebrate material. You may find a few fish teeth. The shark fauna is really cool, pretty diverse BUT there isn’t a ton of teeth. You’ll find broken Anomotodon. You’re very likely to find tiny Chiloscyllium teeth. There is a publication on this fauna and other possibilities like Synechodus, Scyliorhinus, Carcharias, Heterodontus, Palaeotriakis exist but again it’s really sparse. There is also a report on my searches of this matrix. As far as I what I’d like to get in return, I’d say interesting shark and/or batoid teeth. Some of what I’d like is below but I’m open minded and it’s not physically a lot of matrix Pristiophorus Heterodontus Squaliformes Catshark teeth, particularly Cretaceous and Miocene teeth Micro matrix that has shark teeth. I don’t need STH, Calvert, Post Oak Creek, Aquia, Atco, Cookiecutter Creek, Peace River,
-
Our friend @sharkdoctor sent us some micro matrix from the Old Church Formation in Virginia. This is our second batch and the first was fairly sparse but we did find some cool stuff. I haven’t searched much of this matrix but it’s already produced some nice teeth and has a better density too. There isnt, to my knowledge, any descriptions of Old Church material so my ID’s are just best guess. First pic- a beautiful little Galeorhinus tooth. Second pic- a really awesome Sphyrna tooth, maybe S. media. Third pic- a colorful Galeocerdo, I’d guess G. aduncas. I will update this I go.
- 13 replies
-
- 4
-
-
- micro shark teeth
- old church formation
- (and 2 more)
-
Sawmill Branch contains fossils from more than one formation and epoch, but everything I find online says C. catticus in Summerville come from the Chandler Bridge Formation (upper Oligocene). ID references: 1. Gale, B. (2020). A Beachcomber's Guide to Fossils. The University of Georgia Press. 2. Rabi, M., & Botfalvai, G. (2008). A preliminary report on the Late Oligocene vertebrate fauna from Mariahalom, Hungary. Hantkeniana, 6, 177-185. 3. Godfrey et al. (2018). The Geology and Vertebrate Paleontology of Calvert Cliffs, Maryland, USA. Smithsonian Contributions to Paleobiology. 4. Maisch IV, H., Becker, M., & Chamberlain Jr, J. (2015). Chondrichthyans from a lag deposit between the Shark River Formation (Middle Eocene) and Kirkwood Formation (Early Miocene), Monmouth County, New Jersey. Paludicola, 10, 149-183. ID and Chandler Bridge Formation reference: 1. Bourdon, J. (2004-2008). Genera from the Fossil Record: Carcharoides. Elasmo. http://www.elasmo.com/frameMe.html?file=heim/leecreek/lc-c_catticus.html&menu=bin/menu_topics-alt.html
-
From the album: some vertebrates from our collection
Pinichthys pulcher, a very rare stromateoid fish from famous pit Frauenweiler near Wiesloch / Darmstadt / SW-Germany. Size is approx. 30 mm. This small fish came up very rarely, not many are known-
- 3
-
-
- fish
- frauenweiler
- (and 2 more)
-
From the album: some vertebrates from our collection
another rare and very small pipefish, Doryramphus, from famous pit Frauenweiler near Wiesloch / Darmstadt / SW-Germany. Oligocene. Might be these fishes had been not so rare as it was told, but they are tiny (1 - 5 cm), slender and not easy to discover. This one is around 4 cm-
- 2
-
-
- fish
- frauenweiler
- (and 2 more)
-
My daughter and I have just returned from the Isle of Wight, we hunted a couple of times around Yarmouth and Bouldnor where the beaches are full of Oligocene material. We found lots of pieces of croc, turtle and sturgeon as well as a small fish vert. We also found this which I think is the distal end of a mammal humerus. While I don’t think Pleistocene can be ruled out, the bone is heavy and feels fully mineralised. Tapping it with a spoon sounds like hitting rock as opposed to bone and it feels a lot more like rock than any of the ice age bones in our collection. I have read that as well as croc, turtle etc there were Oligocene mammals such as Tapir known in that area. Can anyone identify what the bone may have come from? Also, do I need to do anything to preserve it? Should I soak it to remove any salt and then coat with paraloid? Thanks for looking IMG_2370.MOV
- 29 replies
-
- 1
-
-
- bone
- isle of wight
- (and 1 more)
-
With the start of 2023 I decided to take a break from my long running prep project and prepare out something smaller to start the year off. I collected several of these C. clallamensis shrimp nodules last January and in my previous experience they tend to prep well. This was one that I had split on the beach so I knew that there was a large-ish claw and hoped nodule contained the rest of the arm also. The nodule before prep Unfortunately this nodule didn't contain an arm but rather a bunch of fragmentary shell remains and one large disarticulated claw, but the claw tip glued back on nicely and I decided to have a play with shaping the matrix resulting in an interesting bowled out effect. In total the prep took about 3.5 hours with my Ken Mannion TT pen and I'm quite pleased with how much I managed to undercut the outside of the nodule without breaking it away. While not the best shrimp this was a fun prep to start off the year. Thanks for having a look
- 2 replies
-
- 10
-
-
-
- callianopsis
- clallamensis
- (and 4 more)
-
I was inspired by another WR post and thought I'd share what I was working on today. I had a small rock with a sliver of rostrum showing (white bone). Poked at it a bit with a microjack and it just kept going. All scope work so far. Was hoping for a cranium but no such luck. No nasals either. Now I'm trying to decide how it should display and how I was to expose the cheek teeth. Here it is sitting flat. And I'm thinking I will stand it on edge for display, like so. Will have to remove the matrix on top and prep out the cheek teeth to identify. My initial guess is Paradjidaumo though based on the short incisors and size.
- 15 replies
-
- 5
-
-
- oligocene
- preparation
- (and 2 more)
