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Showing results for tags 'Miocene'.
Found 1,510 results
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This leaf has burnt a hole in my brain for years. Recently when I looked I found a paper which is either the same location this leaf is from, or a very similar one. https://link.springer.com/article/10.1007/s12303-017-0004-x It lists species found as: Equisetum sp. (rhizome) Sorbus sp. Ulmus sp. Fagus antipofi Heer Pterocarya sp. Alnus arasensis Huzioka Alnus sp. (infructescence) Populus sp. Salixsp. Decodon sp. Acer sp. cf. A. nordenskioeldi Nathorts Acer sp. cf. A. rotundatum Huzioka 3 Acer sp. (samara) “Alangium” aequalifolium (Goeppert) Kryshtofovich et Borsuk Fraxinus sp. Dicotylophyllum sp. Monocotylophyllum sp. Unfortunately even with this I am unable to match this leaf! Thanks for any help
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I collect fossils in already disturbed areas around Scotts Valley, CA, mostly sand quarries and road cuts. The fossilized sand dollars I've collected date to the Miocene 10-12 million and, from what I understand, most everything found in this area is similar from a chronological point of view. This region was a vast, shallow ocean back then so most of the fossils are aquatic. An intact sea cow from this era was famously collected in this region. The first fossil I posted appears to be coral. Ithought this one might be a shark tooth, but I'm now skeptical. I've also added a collection photo of the other little bits and scraps I found yesterday. Thanks in advance for any help you can give me!
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I collect fossils in already disturbed areas around Scotts Valley, CA, mostly sand quarries and road cuts. The fossilized sand dollars I've collected date to the Miocene 10-12 million and, from what I understand, most everything found in this area is similar from a chronological point of view. This region was a vast, shallow ocean back then so most of the fossils are aquatic. An intact sea cow from this era was famously collected in this region. The first fossil I posted appears to be coral. The second photo indicates a concavity. Thanks in advance for any help you can give me!
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Hello all, I recently returned from Peace River with a few finds, including this 15 mm fossil. I believe it's a small herbivore tooth, but I'm new here so would greatly appreciate help on the ID. Thanks!
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I collect fossils in already disturbed areas around Scotts Valley, CA, mostly sand quarries and road cuts. The fossilized sand dollars I've collected date to the Miocene 10-12 million and, from what I understand, most everything is similar from a chronological point of view. This area was a vast, shallow ocean back then so most of the fossils are aquatic. An intact sea cow from this era was famously collected in this region. Thanks in advance for any help you can give me!
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I found this interesting bone fragment at Westmoreland State Park (Virginia) on the shores of the Potomac River. (Mostly Miocene marine fauna.) It seems to be broken on one end, but not the other. One side is concave while the other is convex. A friend thought it might possibly be a rostrum fragment? Any ideas what it could be? Thanks!
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- potomac river
- westmoreland county
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Found by my buddy on a river gravel bar/bank in southern Minnesota. As I've stated in some previous posts the geology in our area is upper Cretaceous. However, the river where this specimen was found pulse floods and is like a giant gravel mixer. In the past and more recently Pleistocene fossils have been found in the river gravel deposits in my area (mammoth, bison, etc). It general it is very difficult to age by geology/context. I'm hoping ancient horse but more sets of eyes on it are better. What do you think and thanks!? Any thoughts on age? Ancient horse or not?
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Pliocene/Miocene Invertebrates, Humboldt County CA.
Spoons posted a topic in Member Fossil Trades Bulletin Board
Hey everyone! This will be my first attempt at a trade in the TFF. Im offering a variety of fossils from the Price Creek Formation of Humboldt County, Northern California. This formation has been dated to late Miocene early Pliocene. As far as to what I’m looking for in this trade, I love all things Mollusca! Gastropods, Bivalves, Ammonites, Belemnites or Brachiopods, I’ll take them all. Invertebrates of any kind will strike my fancy though. The weirder the better. I’ve seen some Ram’s Horn Oysters that are awesome! I have no qualms about trading for these as a whole set, however shipping would be cheaper. I’m willing to ship anywhere in the United States, if your international I’m afraid that you’ll have to absorb that cost. I really appreciate all the knowledge that members have been forthcoming with sharing. Please pm me if your interested. -Nick -
I found the silicified and brecciated laminar structures in Miocene lake deposits north of Phoenix, Arizona. Could they be disturbed algal mats? I envision a drying algal mat in a lake that is disturbed by an event such as a flood, windstorm, landslide or earthquake. Compare to Kinneyia trace fossil: https://woostergeologists.scotblogs.wooster.edu/2015/10/23/woosters-fossil-maybe-of-the-week-kinneyia-ripples/ Confirmed stromatolites occur nearby in the lake sediments. Photo 1: typical wrinkled/ cracked marks in surface of laminar structures. Photo 2: typical piece of folded and brecciated laminar structures. Photo 3: detail of photo 2. Photo 4: edge of rock in photo 2. 4.5 cm field of view. Photo 5: Another piece. Photo 6: detail of photo 5. Photo 7: edge of photo 5. 3 cm field of view.
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- miocene
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To start off, I love whale teeth. They seem to love me also. I find many of them. This one seems different and thus special. In circumference, it is a 3rd the size of my pinky. It is 57 mm (2.25 inches) in length, 7.5 mm wise, and it is all there. Note also that the tip has been shaved by an opposing tooth. and it was found in SW Florida. Is Aulophyster a possibility? Hopefully, Bobby @Boesse can provide options.
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Nice weather finally. But with schools closed and people bored at home, have seen increased competition at "my" sites, but yields have been small but plentiful. Fish should be biting soon.
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- microteeth
- virginia
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A friend found this bone on the shores of the Potomac River in Virginia... mostly miocene marine fauna. Closest we could find was a picture of an ocean sunfish beak from the Calvert cliffs.. but we are eager to hear what others might think? Thanks!
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- westmoreland county
- miocene
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When I first found this tooth, I paused. Many times I have stated that horizontal banding in the Peace River means one thing--- marine mammal, likely whale. This tooth is very small, could be something like Aulophyseter, but I am no longer so sure. Decided to see if others recognize this tooth.
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I am sitting at home, sorting ziplock bags of fossils collected in the last year. You know the problem. Too many fossils in the house. All these fossils came out of a Bone Valley Creek, definitely Miocene. For those of you who are fortunate enough to collect Bone Valley teeth, what is happening with the white on these teeth? Especially the Hemipristis.. A white tip. or the "bourlette" on the Tiger?
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- bonevalley
- miocene
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Good evening folks. I am requesting a verification/confirmation for a tooth I purchased over 10 years ago listed as Platybelodon, Miocene, Gansu, China. It measures 7cm long, 4.2cm wide and 6.3cm tall.
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All this fossil needs is Buffalo sauce! https://www.thejakartapost.com/amp/life/2020/03/15/fossil-of-43-million-year-old-penguin-skin-found-in-argentina.html
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- antarctica
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A new paper on extinct elephants is available at this link: Shi-Qi Wang; Xiao-Xiao Zhang; Chun-Xiao Li, 2020. Reappraisal of Serridentinus gobiensis Osborn & Granger and Miomastodon tongxinensis Chen: the validity of Miomastodon. Vertebrata PalAsiatica in press. doi:10.19615/j.cnki.1000-3118.200310. It's quite interesting to see Miomastodon resurrected from synonymy with Zygolophodon because given that Zygolophodon aegyptensis is known from early Miocene deposits in Egypt, Miomastodon may have evolved from a population of Zygolophodon in central Asia that evolved bunodont cheek teeth, and then entered North America from East Asia in the middle Miocene.
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- mammutidae
- miocene
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I was sorting thru a box of old fossils that came from a site rich in late Miocene fossils. In Florida that means miocene fauna, and everything that comes later. That is not a guarantee, more of a likelihood. I did not initially pay a lot of attention to this find because it did not seem to be one of my favorites. Let me explain. I like the small horse teeth from the late Miocene. One of the smallest is Nannippus peninsulatus, like this lower jaw m3. It has a Hypsodont (long crown) type of tooth. Here is my find for Identification. Ignore the "Sm Horse" designation, that was my initial guess. This tooth is a Brachydont form, more common for Artiodactyls ( Artiodactyla, or cloven-hooved mammals, include such familiar animals as sheep, goats, camels, pigs, cows, deer, giraffes, and antelopes). This is a very small tooth, but the surface is well worn so I start off thinking adult. This tooth size is in the range of small horse, but the crown and roots are wrong. All suggestions, comments, and input are greatly appreciated.
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- brachydont
- florida
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I found this fossil several years ago while I was looking for shark teeth along the bank of the Potomac. The exposed cliffs in the area are part of the Nanjemoy formation, and the fossils I find are usually Miocene or Eocene. I have no idea what this fossil is (Maybe a tooth?). I figured that I would finally get around to posting this in hopes that someone on this forum can help identify it for me. More pictures available upon request. Thanks, Christopher
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- tooth
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Beautiful spring weather here! Nothing new and exciting from me, but lots of small teeth, some colorful. One rootless weathered cowshark tooth, bunch of glossy drum teeth, angel shark or two. Mostly spikes, sand tiger, some with nice cusps. The two burrows are from the beach, as is the tiger shark tooth (not much of a winter, and not many makos on the beach-- or maybe others are after them!) Great being out, although pollen is clearly coming fast here.
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- callianassida coprolyte burrows
- cowshark
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Help request! I am putting together a tool for judging rock age based on very crude, whole-rock, hand-sample observations of fossil faunas/floras -- the types of observations a child or beginner could successfully make. I view this as a complement to the very fine, species-level identifications commonly employed as index fossils for individual stages, biozones, etc. Attached is what I've got so far, but I can clearly use help with corals, mollusks, plants, vertebrates, ichnofossils, and the post-Paleozoic In the attached file, vibrant orange indicates times in earth history to commonly observe the item of interest; paler orange indicates times in earth history to less commonly observe the item of interest. White indicates very little to no practical probability of observing the item of interest. Please keep in mind that the listed indicators are things like “conspicuous horn corals,” purposefully declining to address rare encounters with groups of low preservation potential, low recognizability, etc. Got additions/amendments, especially for the groups mentioned above? Toss them in the comments below! Thank you..... https://docs.google.com/spreadsheets/d/1tVm_u6v573V4NACrdebb_1OsBEAz60dS1m4pCTckgyA -
Turtle humerus found in a fallen block. From the Pope's Creek Sands of Virginia.
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- eastover formation
- coprolites
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Miocene lakebed deposits north of Phoenix have revealed more than palm and unknown reed like plants. I found stromatolites preserved in black, gray and white chalcedony. Although not as common as in the Precambrian, stromatolites still occur in oceans and in lakes. See article about the ones in Utah’s Great Salt Lake: https://geology.utah.gov/map-pub/survey-notes/glad-you-asked/is-there-coral-in-the-great-salt-lake/ My favorite one is this 10 cm high detail of a much larger stromatolite. #1 This 38 cm one came home with me. #2 Here is a detail of #2. 9 x 13 cm. #3 Here is a 6 cm high relatively flat stromatolite. #4 Detail of side of #4. Scattered pieces of palm occur. 9.5 cm high. #6 This silicified palm has calcite crystals growing in it. 13.5 cm long. #7 Detail of #7. It looks like an art piece.
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Thoughts on age/epoch? Ancient or not? Found on a gravel bar on a river in Southern Minnesota.
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Hello, The indentions in these two pieces of Sharktooth Hill bone are very unlike anything else I've found there and I'm hoping someone recognizes them. Very smooth and very round, about 2-4 mm deep. I'm including pics of the backs of the pieces, not because they seem interesting, but just so you can see that they're not. It's a little hard to tell, but the large piece has a partial indention on one of the broken edges on the right side of the pic. Thanks for any insights you can offer! Larger piece - Front Larger piece - Back Smaller piece - Front Smaller piece - Back
