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Showing results for tags 'Miocene'.
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I found this tooth in Greens Mill Run in Greenville, NC. I’m leaning towards croc due to the size of the dental cavity relative to the size of the tooth, but perhaps it is a mosasaur. It has one carina on the anterior side of the tooth, none on the posterior side. Also, if it is croc, is there a way to identify whether it’s Cretaceous or Pliocene? Or if either croc or mosasaur, perhaps genus ID? Thanks!!!
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I visited my favorite shark tooth site just north of the Lake of Constance again recently and just wanted to show off a few finds. If anyone notices that I've made any mistakes with my ids then please let me know. Araloselachus cuspidatus The next two I would call Carcharodon (Cosmopolotidus) hastalis, although I know that some still lump these under Isurus. Carcharhinus priscus And the next two I've identified as Odontaspis molassica.
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These fossils were purchased by me from a friend who had received them 30yrs ago. In the box they were in was a paper that read "Miocene, Calvert Cliffs, MD. Though some have argued that they are Florida fossils...I found id's for all but a couple from: "Vokes, H.E., 1957, Miocene fossils of Maryland: Maryland Geological Survey Bulletin 20, 85 p". I was wondering if anyone could id the two left...the single fossil photos? Thanks Greg
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- bivalves
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Hello everyone I am new here, firstly i hope all of you are doing great. I found this Odontocete brain case fragment , I discovered it in a bunch or rocks that were weathering away and based on the nature of these rocks i am convinced they are Globigerina limestone as such the fossil is probably early to mid Miocene in age. After doing my own research and comparisons I have come to the conclusion that it might be brachydelphid or at least delphinoid what do you guys think? I f you have any idea please tell and why. Also note that the images are not taken in the true lateral or posterior but rather taken in relation to the bones long axis. Thanks
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Hello! These are the teeth from my favourite miocene finding place. I know only the no.14. for sure, thats a giant salamander (Andrias scheuchzeri) "jaw" or dentaries. If You know the specimen or have a good tip, please help me to ID these teeth. Thank You!
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Found in North central Nebraska. Miocene. I have a feeling @Harry Pristis and @Shellseeker might be helpful on this one.
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Pungo River Formation, North Carolina, U.S.A., 2021
fossil_lover_2277 posted a gallery image in Member Collections
From the album: Lando’s Fossil Collection
Specimens from Aurora Fossil Museum dig pits on new dirt day.© Lando_Cal_4tw
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Anchor Point Alaska Miocene plant materials
Sjfriend posted a topic in Partners in Paleontology - Member Contributions to Science
I have been in contact with the head of the University of Alaska Fairbanks and Museum for a couple years showing some of my better plant fossils from my area. Miocene age, Beluga Formation, This last week I had a Masters Degree student come and visit my collection and my local site. She is going to do her thesis on the local miocene flora. There are papers on plants presumed to be older and younger but none from this section of the formation. I donated approximately 100 lbs of specimens to the University of Alaska Fairbanks Museum of the North to be used by her then put in the Museum's collection. Based off the papers from other Alaska sites, it appears to be a mix of Salix, Betula, Alnus, Ficus, Populous, Metasequioa, Glyptostrobus, Taxodium and probably others. I know there are at least a few that are not described from this formation based off looking through the papers. Included in the specimens are leaves, twigs, branches, aments (cones and catkins) and other inflorescences. I know there are cones from 3 different families based on shapes and sizes. The student and her professor were quite thrilled and impressed by specimens they were able to take back. I will be donating a lot more from my previous trips after high grading them. And, now I am helping as an offical on-site field agent for this now official University project. So all my digging here for the next 3 years (expected length of project) will be for the university museum. Fine by me as plants are not my #1 fossil to collect.
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- alaska
- beluga formation
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I found this one in the same area of the one I just posted. I wonder if it is from the same critter? @ParkerPaleo
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I’ve done quite a bit of looking online but can’t seem to get an ID on this one. It almost has to be either mammoth,mastodon or rhino but I’m not sure which bone it is. Found in North Central Nebraska. Miocene
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I have missed fossil hunting most of the last month with rains making the rivers and creeks too deep, travel north and other commitments. So today , I went out with frequent hunting companion, Steve. Steve sells many of his better fossils, but he knows that I focus on small horses and marine mammal. When he finds one of those, he may give it to me, and I decided how much it is worth. I had a very good day, but Steve had a better one. and he gave me this 3+ inch whale tooth. At 1st I thought it had an enamel tip, which would have been really surprising. So, cementum flaked off, almost everything remaining is dentine. Found in Southwest Florida, this tooth is almost certainly Kogiopsis .sp (Dwarf Sperm Whale). I am wondering about a couple of fossil questions: 1) Does anyone have insights on the disappearing cementum process. Is it chemical based or possibly time based? I have found teeth that retain ALL cementum and others which have no cementum. . This tooth is highly unusual because it seems to have been calcified ?, or agatized ? or something during fossilization. Only the 2nd whale tooth I have ever seen like this.Once again, what process occurs during the fosslization to crystalize or semi_crystalize the fossil. Thanks for any and all insights.
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Taxonomy according to fossilworks.org. Description from DAVID 1943, p. 11: “Length of head 37,5% to 41%, depth of head 43,8% to 58.8%, depth of body 50% to 63.8% of length of body. Vertebrae 38; 2 small abdominal spines; 12 abdominal lanterns; 3 + ? postabdominal lanterns. Supraneurals project above body for a distance equal to four-fifths of base of dorsal fin. D. =9; A. = 12.” Line drawing from DAVID 1943, p. 60: Photo of a recent Atlantic silver hatchetfish ( Argyropelecus aculeatus) from Wikipedia by SEFSC Pascagoula Laboratory; Collection of Brandi Noble, NOAA/NMFS/SEFSC: Identified by oilshale using David, 1943. References: David, L. R. (1943): Miocene Fishes of Southern California. Geological Society of America Special Paper 43:1-187. Fierstine, H. L., Huddleston R. W., and Takeuchi, G. T. (2012): Catalog of the Neogene bony fishes of California: A ystematic inventory of all published accounts. Occasional Papers of the California Academy of Sciences 159:1-206.
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- argyropelecus
- california
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Lots of competition in the summer, and while it's good to see kids out hunting, they have destroyed a few of my favorite spots, and my shark teeth numbers have dropped. But they seem oblivious to everything but shark teeth. Had an interesting trip lately, some teeth the kids missed, but mostly other stuff. Numbers down, but diversity up! (Size is always an issue there). . Top left: cowshark teeth pieces and one with a huge oblique root (but only one spike?) top, center and right, skate denticles, two verts, some teeth and bryozoans(?) more teeth, on right, three angel shark, two sandtiger parasymphyseals(?) teeth, a weird "three headed" thing? (have others from earlier), just below that a small hard-to-photograph 3D object more, some colorful, teeth, in center a broken Tilly bone, showing concentric calcium deposition rings, to the right a puffer plate, bonito nose and tiny ecphora, @Shellseeker two unbroken tilly bones (more like the two types I usually find), tiny piece of coral four drum teeth, two tiny mako, and a perfect red 1" mako (made the trip special, hadn't see one in a while)
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I recently received approx. 2 dozen fossils and was told that they were all from Miocene of Calvert Cliffs, MD. But, have found some Id's from Plistoecen/Pliocene Florida as well. So must have gotten mixed up some where along the way. I've found all but these...but not sure of there origin or age. I'm looking to find identifications. I will get measurements of them asap. I tried numbering...I got the first one...but, couldn't figure out how to do the rest. If anyone can help...I would really appreciate it. Greg
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- invertrebrete fossils
- maryland
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Tardigrade trapped in amber is a never-before-seen species By Nicoletta Lanese, LIve Science, October 6. 2021 Incredibly Ancient Tardigrade From 16 Million Years Ago Is Like a Ghost Across Time. Michelle Starr, Science Alert The open access paper is: Mapalo Marc A., Robin Ninon, Boudinot Brendon E., Ortega-Hernández Javier and Barden Phillip, 2012, A tardigrade in Dominican amber. Proc. R. Soc. B.2882021176020211760 Yours, Paul H.
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- amber
- dominican republic
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Hello everyone I found this small tooth yesterday diving in a SE US river spot that has only produced Miocene era materials so far: Shark Teeth-Megalodon, Carcharadon Hastalis (no Carcharadon Carcharias yet), Hemipristis Serra, etc.) and plenty of whale bone, verts, ear bones and teeth. I think this is a small dolphin tooth but I haven't seen one with a root that is pretty much perpendicular to the tooth like this. I've also attached a couple pics of the other stuff found yesterday for reference. Thanks for looking. Let me know if there is another angle that may help with ID.
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Chiapas Amber (La Quinta Fm./Mazantic Shale, ~22.8-15 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
Image of specimen from previous entry. The fracture is actually a very clean break with only a tiny portion of low-fractile material missing.© Kaegen Lau
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Dominican Amber (La Toca Fm., 20.43-13.65 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
Weighing about 5 grams, a small piece of Dominican amber with the red, oxidized "skin" still intact on three sides of the piece.© Kaegen Lau
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Chiapas Amber (La Quinta Fm./Mazantic Shale, ~22.8-15 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
320g raw amber from Chiapas, MX. Mined on 9/3/2020. It is actually one specimen, but it arrived damaged through shipping.© Kaegen Lau
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Found this while fossil hunting on the Potomac River (mostly miocene marine fauna) in Westmoreland County, Virginia. When I first picked it up I thought it was just a shark tooth with the root missing. When I got home and cleaned up my finds I realized it wasn't shark. It is about 5/8" long, tear drop shape in section, and has striations like a croc tooth, but since it is flat I don't think it is croc. Maybe some type of fish? Any thoughts?
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- miocene
- potomac river
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need some help identifying this, im pretty good with extant species but this stumped me. just purchased and has yet to come in the mail. seller didnt include any information except that it was a miocene hyena and these pictures. i know this is super vague, so no worries if we cant identify it i was told it could be a percrocuta, it measures 7-8 inches, 17-20 centimeters long i will be able to describe more when i receive it
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just posted this in fossil id to see what exactly it is but i shouldve made sure it was real first haha. this is on the way, i dont have many pictures or good ones but i was wondering if its an obvious fake or not, as i can return it in a small window of time after i receive it. any help is really appreciated
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From the album: Vertebrates (other than fish)
4x2cm. Cetacean earbone (Bulla timpani). From Billafingen, B.-W., Germany. Miocene Burdigalian. -
From the album: Pisces
19mm. "Snaggletooth" Lower sympheseal. Miocene Burdigalian. Oberemeeresmolasse Formation. From Billafingen, B.-W., Germany.- 1 comment
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- hemipristis
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Hi All, It's been a while since I have posted, let alone gone collecting but I just had a really good trip down to the Matoaka Beach Cabins in St. Leonard, MD. Here you can pay $5 ($10 on weekends) to access their beach which gives you about 1/3 of a mile to explore. I went down on Tuesday the 14th since I had some time off from work. It coincided with an extremely slack tide which directly led to many of my best finds. No shark teeth unfortunately, except for two pieces that were just roots with the toothy part broken off. I did however clean up on Ecphora sp. and Cetacean bones as well as a couple of mollusks that are hard to collect. A view of the beach with a fall from last year. It's about 1/2 the size it was last year and will likely be even further reduced by this time next year. Such is the life cycle of the cliffs. A view of the cliffs straight on. I'm not positive but I believe the shell bed exposed is the Shattuck zone 18, Drumcliff member of the Choptank Fm. Above that is zone 17 which is the St. Leonard Member. Both are Miocene in age. I'm still digging into the ID of what I found so please correct me as needed. A specimen of Dosinia sp. with some of the original shell coloring preserved. I'm not yet sure who this is, but they are hard to collect intact as the matrix is very crumbly and so are the shells. I suspect this is from the St. Leonard Member of the Choptank F,. This is a small razor clam and is another tough one to collect because the shell is very thin so it doesn't erode out intact. Typically it just falls apart. Ecphora sp. in the water that you could see thanks to the slack tide. I found a bunch of these in different sizes and surprisingly intact. I found 3 Cetacean vertebrae in the shallows of the low tide with the largest one about 4" across (6" of you include the "wings") Oh yeah, then there was this odd limb bone, but I posted more pics of that over in Fossil ID. I also managed to get over to the Potomac and walk along the banks at Purse Creek Park. Nothing spectacular, but it was still fun. Maybe if the weather cooperates I can get another trip in before it gets too cold. Thanks for viewing! Dave
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