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Showing results for tags 'Miocene'.
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I found this tooth in some Lee Creek micro matrix from Aurora, North Carolina. It measures 6mm. After doing some research, I believe it is a Carcharoides catticus tooth. Can anyone confirm?
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- aurora nc
- carcharoides catticus
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hi Is this a meteorite or just a stone? IMG_5314.dng
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Teachers find fossils of extinct hippo-like mammals on the Oregon Coast
Oxytropidoceras posted a topic in Fossil News
Teachers find fossils of extinct hippo-like mammals on the Oregon Coast John Ross Ferrara, KION6-News, Version 1, April 9, 2024 Teachers find fossils of extinct hippo-like mammals on the Oregon Coast John Ross Ferrara, KION6-News, Version 2, April 9, 2024 Yorus, Paul H.- 1 reply
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- desmostylians
- Desmostylus
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- bentonite clay
- buried forest
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More of the same. Mostly sand tiger (our most common), a few cow sharks (my favorite; one missing serrations, but possibly a weird chip specific to that area. I'm starting to think the ones I am chasing are more fragile), gray shark, lemon, thresher, mako. The beach is attractive but tooth hunting uneven: a few teeth one day, a dozen the next, a few more the next (two or three hours around low tide each day). Coastal flooding (must be lots of rain upriver). Wind from the north (I hunt the south shores) brings in teeth but a lot of sand; south and west lowers water and uncovers teeth (although unpredictable). I cannot see well and stay near the water edge; most seem to look in the sand. Some days lots of small fossil bone chips and old glass. Minnows schooling and the beach is active (yet most fishing is a month away). Lots of people on the beach who come over to me to ID finds ("the blind leading the blind"). I find more teeth than most on the beach, but overall they seem to find nicer beach teeth. Have seen a beautiful glossy jet-black big sand tiger with cusps, many makos including one perfect one near 2" (5 cm), mostly sand tiger and "gray" shark teeth, and of course a few beautiful cow shark teeth (a big upper tooth and a nice lower lateral with six points and root). The weather has been usually warm (~80 F several days) and local beaches over-run with adults and toddlers (no teenagers who were the big teeth hunters 35 years ago; school closed this week).
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- cow shark
- microteeth
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It's a bone, I don't know what, it must be from a seal, dolphin or a big fish, or I don't know. This is a bone that was found in a formation from the early or middle Miocene. In that formation I have found dolphin bones, dolphin teeth, penguins, various shark, stingray, and fish teeth. I upload some photos, it is a little wet because I was cleaning it.
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Fossil identification help please! Peace River Formation Venice, FL area
Newbie77 posted a topic in Fossil ID
Hello fellow paleontology buffs! I have recently returned from a trip to the Venice area where I did some surface/ beach sifting for fossils. I need to get out and dive there next time. I would love to have some help identifying fossils that are tripping me up. I recognize that there are a LOT of them. Sorry!!! I organized them on to a PDF because there were a lot to look at, but please let me know if it does not open up and I will upload them as images instead. Thank you so much for sharing your knowledge.
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Shown below is the tooth of a camelid, from the Miocene of the Bone Valley Member in Florida. It was sold as that of a Procamelus, but the Florida Museum page on the Palmetto Fauna doesn't list Procamelus as being present in it. The only camelids listed are Pleiolama, Hemiauchenia and Megatylopus. I personally believe the tooth to be from Hemiauchenia, but I have my doubts, particularly given the fact that I can't find much literature on the dentition of Pleiolama or Megatylopus for comparison online. The tooth also has an unusual ridge, as can be seen on the left in the first photo, which is a feature that doesn't appear to be present in the many Hemiauchenia specimens I can see, unless the ridge is a fragment of the most posterior projection of an M3. It is my understanding that @Harry Pristis is something of an expert on Floridian mammals. What do you make of the tooth? The tooth measures 2cm long (1.8cm if one disregards the projection of matrix on the right side of the tooth) and 2.4cm tall. Thanks in advance for any proposed ID's Othniel
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Greetings, Are all these from the same type of shark? I am trying to organize some of my finds over the years. Metric ruler.
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- calvert md
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Monterey Formation (Miocene) shell fossils - Arroyo Seco Canyon - Central California Coast Range
ezeemonee posted a topic in Member Collections
Found in Miocene period Monterey formation in Arroyo Seco canyon of Central California Coast Range. Trochita is an undescribed species known from this formation. Others are mostly Brachiopods (Discinisca lamellosa) which surprisingly is not extinct and still lives in some oceans, Scallops (Pectenidae), Venus Clams (Veneridae), Ark Shells (Anadara/Scapharca), and an unknown Moon Snail (Nacticidae). Most found in 2024, some in 2019. Added a few pics of the nice scenery in the canyon. Trochita specimen is noteworthy as being in good condition with surface detail and may get donated to the California Academy of Sciences collection.
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- anadara
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The specimen was listed as a hatchet fish, however it looks more like a lantern fish to me. It was from an old collection. Age: Puente Formation, Miocene Location: California, Los Angeles, USA
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Got some Lee Creek micro fossils I could use some help positively identifying. Tooth #1: Rhizoprionodon? Size 6mm Tooth #2: Some type of fish tooth? Tooth #3: Hoping for Rhincodon, but I don't think it is. Maybe a symphyseal tooth? It is laterally compressed though. Tooth #4: Thresher? Tooth #5: Mobula
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- aurora nc
- fish teeth
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I was lucky enough to trade some matrix with another collected from the famous shark tooth hill. I’ve identified them to the best of my ability and would love to show them off and get any feedback. Scale is mm! Thank you in advance! I’ll be more than happy to take different angles! C. planus tooth Charcharhinus sp. tooth Cat shark or hound shark? Galeorhinus sp. Mustelus sp. Squalus occidentalis
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- california
- miocene
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Found this tiny shark tooth in some Lee Creek matrix. Any ideas?
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I wonder if anyone could help me identify this equid fossil. Miocene of Tonopah, Nevada, I am told. Any thoughts would be appreciated. Thanks!
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Xyne grex (Extinct Herring Relative) - Jalama Beach in Southern California
ezeemonee posted a topic in Member Collections
Found some nice Miocene period fish fossils in 2020. They have been ID'ed as Xyne grex (Extinct Herring Relative) but other and larger fish species fossils as well as shark teeth have been found there too. There is some Great info on this site here!: https://www.nautiloid.net/fossils/sites/jalama/jalama.html
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- california
- fish
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Hey, going through some finds of last year i came across this tiny Hexanchid tooth. 0,9cm x 0,5cm, Miocene/Pliocene, Antwerp area, Belgium I've seen Hexanchid posterior teeth before and they look quite different.. (from the book 'Neogene Sharks of Antwerp' by Stephane Knoll) Could mine be juvenile Notorynchus or Hexanchus? Thx, Dries
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Pictured below is an otolith from an indeterminate cetacean, from the Miocene of the Calvert Cliffs Formation. I've had this particular specimen in my collection for some time, but was under the impression that otoliths weren't diagnostic to any degree, but my research surrounding cetacean dentition for a dolphin tooth I plan to purchase soon has proved otherwise, so I thought it would be worth putting it to the experts. Unfortunately I can't find my ruler to provide a sense of scale for the photos, but the specimen is approximately 4cm long and 1.5cm tall. Thanks in advance for any proposals as to the origin of the fossil Othniel
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Edit* Title changed to say shark skeletal elements ( previously said bones). This is an interesting topic that was brought up by my mentor and vertebrate paleontology professor during a lecture about a year ago. He mentioned that for some reason there seems to be a higher occurrence of shark bones and relative scarcity of teeth in the Astoria formation. That is the verbage he used. I am willing to bet this is some kind of collection bias where people just aren't recognizing the teeth as often as skeletal elements for some reason. I haven't been able to find information on Google scholar or really anywhere else that has provided information on depositional environments that would favor the preservation of shark skeletal elements over teeth, especially where there are plentiful well preserved invertebrate shells. Most of the fossils are locked in concretions or embedded in concrete-hard sandstone. There is intermittent softer sandstone and siltstone, but seems like most of the vertebrate and invertebrate fossils occur in the harder layers. This is something that has interested me as a research topic, but I haven't been able to make it out in awhile to do any collecting of my own. It would be interesting to set up a transect say from Newport to Lincoln City, take a group out and just collect fossils over a period of time across the transect to get an idea of fossil type, frequency, etc. And see if there really is something lending itself to a higher frequency of shark skeletal elements. On a side note it does seem like there is an usually high occurrence of young vertebrates such as pinnipeds and whales in the sections of the formation I've collected. It would be interesting to hear your thoughts on the matter as well as any additional insights you may be able to provide. What do you think?- 11 replies
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- astoria formation
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Hello! I have been fossil hunting for quite a bit now and this is my first ever (what appears to me at least) fossilized bone! I would love just a general direction on what kind of animal it could’ve been- I know this area is very well-known for marine fossils, so of course my first thought would be some find of fish bone? Or I could be totally wrong, and it could be a more recent mammal! Any insight is so much appreciated- all I want to do is expand my knowledge. Thank you!
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- california
- californiafossil
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Yippee! The weather was nice enough today that I could finally go off for an extended ride on my bike. And of course I decided it would be best to make the hour's trip out to my favorite Miocene shark tooth site. So I packed my trusty Estwing hammer, a ziplock bag and my kneepads into the saddle bag. I even thought to take along my camera, so I can show a few pics. I however stupidly oversaw my water bottle which I had just put aside for a moment before I took off and didn't notice it until I got there, but my tongue didn't get all that dry and there was a nice little restaurant on the way home where I could wet my whistle. I spent about 2 1/2 hours chopping away at the outcrop and came up with a few nice ones. Here's what my dig looked like about halfway through. And here are a few in situ photos. There were a lot of uncomplete ones missing the roots or tips, so I just left a pile for the next group of locals that come along. I ended up packing 12 of them away and as is usually the case with shark teeth, I already had them all cleaned up just a half an hour after I arrived home. I decided to give most of them to my friend who lets me use his workshop and just hung onto the last 2 pictured below for the collection, since I already have a very good selection from this spot. The Carcharodon hastalis at the very bottom was one of the largest I've ever found there and despite the fact that it's missing the root and a bit of the tip, I got so excited when I found it that I forgot to take an in situ photo. Mitsukurina lineata Carcharias sp. Carcharias sp. Sparus aurata Carcharias (or Araloselachus, take your choice) cuspidata Carcharodon (or Cosmopolotidus, take your choice) hastalis
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- carcharias
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I collected this bone earlier this week in an outcrop of the Calvert Formation (Early-Middle Miocene) in Maryland. I found several vertebrae in close proximity to each other that I have tentatively identified as dolphin. I will share them after I finish cleaning and prepping them. Next to one vertebra was this mystery bone. Any idea what it could be? Maybe part of the dolphin sternum? Any help would be greatly appreciated.
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Found in a block of matrix on the western side of Stratford Hall during a NHSM trip. Length is about 0.75 inches (1.9 cm). Order of photos: Front, side, backside, top-down, underside.
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1 more from the same location, a vertebra. Photos 1 & 2 are the front and back, while 3 & 4 show top and bottom. One end appears flat, while the other is crudely pointed. Axis vert? I was thinking small mammal. Thoughts? thanks!
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2 Chesapeake Beach mammal fossils (jaw section, tooth) ID request
hemipristis posted a topic in Fossil ID
hello, I have 2 items from Chesapeake Beach, Maryland, USA. Exposures are Miocene. These were found as float, on the beach. The first is a jaw section, approx. 8cm in length, with a broken piece of one tooth present. Porpoise? The second is a tooth crown, approx 18x13 mm and two ridges. Photos of the chewing surface and underside are presented. Manatee? thanks!
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- chesapeake beach
- jaw section
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