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Showing results for tags 'Miocene'.
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Savannah River Dredge Spoil-Water Worn Partial Mammal Tooth?
James Savage posted a topic in Fossil ID
Hello everyone Wanted to share one of the many things that have me stumped. The hunting spot is from dredged material from the river that has been deposited on a man-made island that has a mix of Miocene and Pleistocene era fossils. This looks like it is made of enamel and doesn't have any porous fossil bone structure that I can see. It looked at first like a very worn bit of a small plate of mammoth tooth enamel. It has what appears to be a peak and valley on part of the crown on the occlusal/top side (possibly a plate tubercle?). It is completely flat on one side and has a slight bulge outwards on the other. I don't see any area where roots extended from the crown of the tooth. The occlusal/top side doesn't seem to have the mammoth tooth plate enamel ridges. I've found a few similar appearing fossils in the area over the years from this spot. I also found a broken mastodon or gomphotherium tooth cap/hump and a few pieces of ivory bark nearby on this trip. Let me know your thoughts on ID or if it may be too worn for identification. Thanks for looking
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Sunday morning we went to Stratford Hall to do a fossil hunt with the Natural History Society of Maryland. The weather was not on board with the idea lol. It was barely above freezing and quite windy. Also tip for everyone if you buy waterproof winter gloves from Amazon double check they are waterproof. 3 out of our 4 pairs were, my oldest son's gloves were leaking at the fingertips. Also it turned out our hand warmer packs wouldn't activate when we opened them. Even though we didn't stick it out long we did find a pair of worn shark teeth and a pair of ray teeth pieces. After we got dried and warmed back up we made our way up the road a short drive to visit the birthplace of George Washington. We plan to go back down sometime when the weather will be more conducive to get in the water A few pictures from our visit, note the white caps on the river. From the parking lot above the cliffs Our meager finds
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- miocene
- shark tooth
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Found this chub tooth from NJ Miocene. Tooth is 1.25" on a straight vertical line from left lobe to tip (not along the diagonal). Took a lot of effort: 2.5 years to narrow down a location, and 6 hours of searching. Found it in the last half hr of the trip. Satisfying to have found, but a bigger tooth would have been nice for the effort required. That's just the luck of the hunt though. Hopefully there will be more to come. Thanks for viewing.
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- 7
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- carcharocles
- chub
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Worked hard at the "new spot" chasing cow shark laterals. Found several, sadly mostly damaged, no definitive "answers". Need to keep looking! Mostly sand tiger teeth (our most common), one heavier, no boss, possibly mako. Some drum "teeth", some little (no clue), and some gray shark teeth (not all shown). The cow shark lower lateral teeth at this spot often show no serrations on the first spike (unlike what I am used to) but rather either discreet minor points, or a serrated edge separate (or almost separate) from the first, main point/ spike. There is a broken first spike (4th from left) that seems to have separate serrations, three teeth that have screwed up(?) first point serrations, a normal serrated tooth (on left) and a colorful broken cow shark piece.
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- cow shark
- microteeth
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Not only do I not know which critter this came from but I also I don’t know which bone it is. Getting a proboscidean or rhino feel. Any help appreciated. Most likely Miocene, found in North Central Nebraska.
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I realize it's quite the task ID'ing shark/ray vertebra... However, I am hoping some of you will be generous enough to share your input on these finds from a recent trip to Summerville, SC. Larger vert measures 1-3/4" X 13/16". Smaller guy is 3/4" X 5/16" and I'm hoping for sawfish on that one, which would be my first! The last pic is simply for your viewing pleasure, because it's the most unique looking vert I've ever found with that root leaching! I also understand that I might not get far with the bug guy, but thought it was large enough to get detailed enough pics to point me in the right direction!
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So I purchased 19 assorted Miocene-aged teeth from (according to the American seller) China a few years ago. The seller had given most of them a vague label (which I've labelled the pics with) - but wasn't able to get more specific. Could anyone help me narrow down which species they might be? Are there resources people are aware of that could help point me in the direction of being able to ID these teeth? Or is it very unlikely I'll get any definitive ID on these and I'll just have to accept a broad family-level description of what they are? I attached an extra picture of a giraffid tooth from the same collection - I reached out to a Chinese expert on miocene teeth from china and he believes "that it's a lower right canine and that it might belong to Palaeotragus or Palaeotragus-sized giraffid based on size". I thought FF members might find some interest in that.
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Pretty sure this is a tooth. What do you guys think? North Central Nebraska, Miocene. @Harry Pristis @Shellseeker
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Went back to extract a 35 cm long piece of silicified root out of the Miocene Chalk Canyon Formation near Black Canyon City north of Phoenix. Had to work around the couple of heavy low elevation snow storms this year which have helped to greatly lessen a multi year drought. A geological hammer and a large star point chisel helped get the root out of the tuffaceous sandstone. I did not expect to get it out it one piece; I had to glue it together. After extracting the root, I looked in the surrounding basalt for agates and druzy amigdules. The prize was a 4 cm high manganese-rich crystallized dendrite growing in and amongst small quartz crystals in an amigdule. See other quartz druzies.
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- arizona
- chalk canyon formation
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Unique wood from Round Mountain Silt, anyone seen anything like this?
H. Drax posted a topic in General Fossil Discussion
Been going through an old collection I haven't looked at in many years and in it are 15 or 20 pieces of wood, collected at the Ernst quarry back in the 90s. I haven't seen any similar examples from Sharktooth Hill or elsewhere. The pieces are somewhat fragile and often partially hollow with small (druzy?) purplish crystals on the interior. The rest is mostly composed of the same purplish-black material but man also show a tougher translucent outer crust. Some of the interiors of these pieces also contain powdery, lightweight chunks of brown matter. Based on appearance and the local geology as well as the preservation of flora from another miocene site in the region (see Reynolds p.114) I'm guessing the dark purplish stuff is pyrolusite or a similar manganese mineral. I assume the tougher clear stuff is microcrystalline quartz. The powdery brown stuff I cannot explain except as mummified wood, but I haven't found any pre-pliocene examples in the fossil record. I'm not a wood guy in general though so maybe there's more out there. What do you think? Something of research value? A small piece (~2.5 cm square) with the two primary minerals. Typical piece. Largest is about 15 cm. The mysterious Brown Matter. Very hard to get a good photo since it's mostly deep in the "geode."
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These are from multiple trips between 2022-2023. all from Calvert cliffs, each trip has something unique I would like assistance in identifying so for convenience's sake, I will refer to the items in alphabetical order relative to the numerical trip order. 1A 2B etc. Trip 1 1A pretty sure it is a crocodile tooth, Thecachampsa sp? 1B this is a bone that i found on the beach, im not sure if it's a cetacean atlas or skull fragment. but it's got this weird hole in it on one side. 1C clearly a cetacean vert. probably a juvie dolphin. i think so bc it doesn't have any fused epiphysis. id like to know what part of the spine this would have been on the animal. 1D maybe the wing of a vert? 1E is this anything? or just concretion 1F biggest fossil I've found yet by far! this massive chunk of whale jawbone. I am going to make a separate post in fossil prep to see about the best ways to clean it. 1G maybe a rib? i believe its a bone of some sort. i need to paleobond this one back together. Trip 2 2A definetely a tooth of some sort. not sure if its a croc or a cetacean since the enamel is worn 2B maybe a rib? or vert wing? 2C I think this might be a turtle shell, because its texture is not pronounced enough to be a cookie fragment. 2D maybe a skate osteoderm? 2E 2F 2G Sand tiger shark 2H crab claw with some sort of borehole? any other comments or ideas are as always, appreciated!
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- baleen whale jaw section?
- bone
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Finding my favorites, Gomph, a Meg, Tridactyl horse, and a Periotic.. A enjoyable day in the sunshine with friends... The Meg came early but also found some nice Lemons, Tigers, and Sand Tigers. For identification, a couple of small Horse teeth... 1st has been slightly broken, but likely very identifiable. When we talk about the smallest of Florida Horse teeth, this lower must be a candidate. As we were picking thru the final sieves, this Cetacean periotic added excitement. It is the smallest one I have seen.. @Boesse Apologize for the brevity... Wanted to add this thread before cleanup and sleep... Jack
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- bonevalley
- dolphin
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I think these are all pisiform bones but I’m not 100% sure. @Harry Pristis, I looked at some of your older posts about these bones but the shapes didn’t seem to match these. first one measures 68 mm x 54 mm. Second one measures 52 mm x 43 mm. The last one is 44 mm x 34 mm
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Any ideas on this one? Should be Miocene like the rest of the stuff in my area. Nice little well preserved bone. Found in North Central Nebraska.
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This is the smallest one of these I have ever seen. Any ideas of what critter it may have belonged to? Found in North Central Nebraska Measures 20mm X 12mm.
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- astragalus
- miocene
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Looking for an opinion on this little 1 inch object from the Potomac. It's noticably less dense than a regular rock of its size and has dark bands on it that can be felt. I wouldn't be surprised if it was just a cool rock, but could it be an impression of some kind?
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Peace River Tributaries Part II - Hemi Heaven Continued
DirtyHippie posted a topic in Fossil Hunting Trips
I planned to return for another week and stay at Brownsville. Came home a day early and had another amazing trip. Met up with Ron & David. The first photo is our combined haul for the day. Ron was wise to slowly work the tree all day. It was nice to see him find a nice Meg on one of the last sifts. Also very wise of David to have classic rock going to scare the critters. Thanks for helping me explore and showing me the improved sand flea rakes you have. That was one mighty big Cottonmouth we all saw when we were exhausted on the walk back. Phew. Can't believe it was frozen there. David was kind enough to take me to his spot the next day. I was really tired and bumbling around all day, somehow I reached down and found a Meg. Pictured front and back in hand. 9 & 10. David also found a Meg in the same spot and gave me a really nice tortoise spur. Had to call it an early day as I was exhausted, thanks again David for putting me on this one.. Will be adding photos of the combined haul from this site... An amazing amount of Snaggles at this location.. Afterwards are the C. megalodon/chubutensis excluding the one found elsewhere.. Appears that most of these species, especially the larger ones are in poor condition from being violently ripped from the formation by the CAT 5 hurricane. lots of small pieces of decent sized Megs. Unfortunate the big one was broken, note the staining from the top muddy layer. And cool to see the inside is still as white as the formation. Evidently, is was in fact taken from the formation quite recently by the hurricane. May the gods smile on me and let me find the other half, if not its still an interesting specimen. Afterwards a pile of broken smaller shark teeth.... mostly lemon shark.. Are these hammerheads or sharpnose? They seem much more abundant in the fossil record here than in other similar sites in Florida. Afterwards the Galeocerdo.. first and most commonly on top G. cuvier or aduncus? G. contortus in the middle.. G. mayumbensis on the bottom? Not sure about the ID on all of them.. it seems like they are much more abundant here than other similar sites. Maybe a patho tiger pictured? Tons of broken tigers as well.... including many mayumbensis..- 21 replies
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- bone valley formation
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You are probably aware that @DirtyHippie came to Brownsville, found an extremely productive likely Miocene location and promptly invited a number of TFF members to join in the excitement. You can read about it and see many of the finds here.. http://www.thefossilforum.com/index.php?/topic/129917-peace-river-tributaries-part-ii-hemi-heaven-continued/ I joined last Sunday and managed to find a dolphin Bulla that @Boesse identified as Eurhinodelphis. In his trip report, Brian had 9 Dolphin and I am interested in seeing if I can track down, possible IDs... In this case, I am asking TFF experts familiar with Dolphin fossils in Calvert Cliffs or Lee Creek to comment on finding or not finding similar looking teeth. I'm using Brian's group shot posted in the thread above So , the first... I found something similar, not as pretty... #2 #3 #4 #5 #6 #7 #8 #9 These teeth are all approximately the same size 30 to 50 mm. I realize that I am reaching with somewhat minimal info. I am looking for leads... If you can ID a tooth, GREAT, but if not tell me if anything similar occurs in your hunting areas... I am looking for Genus rather than species on a few or many. None of us are sure that #4 is a tooth... @hemipristis @siteseer @sixgill pete @Harry Pristis @Al Dente
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- bonevalley
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Hi, I found this bone embedded in a exposed layer in a cliff on the surf coast, in Victoria, australia. It was in a red sedimentary layer just above the 26Mya volcanic basalt layer. Some of the bone can be seen still embedded in the cliff (see center of last photo) Fossils of Miocene marine mammals (primitive whales etc) have been previously found in the surrounding region. Could that be what this is? Cheers, Oli
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Hi @Boesse, calling on your expertise once again. You previously described a bone I found: "The largest element is a partial squamosal bone of a baleen whale - the 'rounded blunt projection' is called the postglenoid process, and the flat surface on one side of it is the glenoid fossa - otherwise known as the jaw joint." Recently about 50 feet away from the first I found a second, smaller and much, much lighter. To me it seems a smaller mirror-image of the first. (Hopefully it is not a cow bone). Comparing the two:
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I was out today with @DirtyHippie. We have a great time and I came home with a Dolphin earbone and a pretty upper Hemi. I thought the earbone was Pomatodelphis inaequalis, from Hulbert's book. But, in close comparisons, I am not so sure. What do others think? @Boesse Here is a bulla that I had found in the Peace River that I thought was from Pomatodelphis inaequalis for comparisons.
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Hi, I’m new here, just posting a couple of recent finds from a recent trip to the surf coast in Victoria, Australia. This one I believe to be a nugget of petrified wood, found embedded in a cliff shelf sedimentary layer above volcanic basalt (from an eruption previously dated to 26Mya). I can see clear wood grain (I think), so pretty confident this one is petrified wood, but would appreciate any comments/suggestions! A lot of the fossils in the surrounding layers are echinoids and brachiopods, so I am guessing fossilized driftwood? the object is hard and smooth to the touch, much heavier than wood. I have cleaned it up a bit, removing sedimentary material and some black gunk on the surface (still some visible). Cheers, Oli
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Took a trip to Matoaka Beach (Miocene, Choptank Formation) yesterday. I found a couple medium sized Hemis and one gentleman from the Baltimore area found a really nice one that he allowed me to get a photo of that I thought I'd share for everyone. I don't need any ID help on that, but it's certainly drool-worthy. But other than shark teeth, I found a couple of other items that I'd like some help confirming ID for. 1. I assume this is a bony fish vertebra. It has an interesting shape. Is there any way to ID genus or species for this time period? 2. This piece resembles an inner ear bone and has some markings that resemble the vascularity of bone. 3. This is an odd piece and has a tooth-like shape with definitely some residual enamel on it. 4. Could this be a ray barb? It also resembles a bony fish tooth I've found in other formations. 5. I assume this is an odontocete tooth, but it is rather small. Any way to narrow down genus or species? Thanks to anyone willing to help out!
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These two <1 cm teeth are from the Potomac River in VA. The left tooth has faint serrations and a cusplike spike of enamel. The right has a large root protrusion and no serrations.
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- calvert fm
- miocene
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I suspect this is a stromatolite (and not a stromatoporoid) after reading up on both, but seeing as I’ve never found either before, I wanted to put this past the experts. I do see some structures that could possibly be “pillars” but I’m just not convinced that’s what I’m looking at. Any opinions shared are very greatly appreciated, thanks!
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