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Found 27 results

  1. Hey all, Since COVID began and I've had more free time I've been getting back to blogging, and now I'm regretting taking such a hiatus since I started here in Charleston. I've written the first of a 2 or 3 part series of semi-technical blog articles that most here should understand and appreciate on our new study on the giant dolphin Ankylorhiza tiedemani (formerly known as Genus Y). The first post is about the background to our paper, and the second one will be a bit more on the anatomy, feeding behavior, locomotion, and evolutionary implications of Ankylorhiza. Take a read here: https://coastalpaleo.blogspot.com/2020/08/ankylorhiza-tiedemani-giant-dolphin.html
  2. Is this Bone?

    Hi everyone, This is more of a general question for my own knowledge. I've been trying to determine better how to differentiate between fossil and rock. I know it can be hard at times. I read various posts here to learn how, and I wanted to try my hand at it. I believe these are all fossilized bone found in a Florida river. I know it's almost impossible to identify exactly what they are, but I'd only like to know if they are actually bone. Would anyone be able to tell? Each piece is around 1 inch long.
  3. Hi all - I did not have time in January when I normally write these up, but thanks to Covid quarantine I managed to get some time last month and write up a comprehensive review on my blog of every single 2019 paper in marine mammal paleontology. Enjoy! https://coastalpaleo.blogspot.com/2020/05/2019-in-review-advances-in-marine.html
  4. Hi all - in the hopes of attempting to reach a wider audience, and anyone who has collected possible sea otter fossils, I'm sharing the first two posts from my blog "The Coastal Paleontologist" in a short series on sea otter paleontology and evolution. The first one is mostly a bit on sea otter biology, and the second is the first one that really deals with the paleontology aspect. The third (and fourth?) posts will deal with what the limited fossil record can tell us about sea otter evolution. The sea otter fossil record is quite poor, and I'm hoping that some of you may have found some fossil specimens and might consider making them available for scientific study. Anyway, here's part 1: https://coastalpaleo.blogspot.com/2020/05/the-terrible-fossil-record-of-sea.html And part 2: http://coastalpaleo.blogspot.com/2020/06/the-terrible-fossil-record-of-sea.html Part 3: will update as soon as I get it finished! And a teaser - the left mandible of the holotype specimen of Enhydra macrodonta from the Crannell Junction locality right off of Highway 101 near Arcata, California. I spent about 3 years emailing various curators about this fossil, if they had it on loan, and I finally got a response from Dr. William Miller III at Humboldt State University in Arcata that he didn't remember such a specimen existing there. The paleontologist who named it, Dr. Frank Kilmer, who was retired, mailed me a letter indicating that the mandibles had been given back to the private collector (!!!) after the species was published - but nobody at HSU knew their name! One former student did, but would not return my phone calls. I visited HSU in 2008 when I was an undergraduate student and rifled through their teaching collection and found A mandible, but I didn't think it was THE mandible, because of Kilmer's letter, and a misplaced label suggesting it was from a different locality (and therefore a duplicate specimen rather than the original). Dr. Miller indicated I should arrange for the fossils to be transferred to a larger museum, as he was certain that the collection would be thrown in the garbage after he retired! I visited again two years later and set aside all the specimens that should be transferred and secured an agreement from HSU for the material to be transferred to UC Berkeley, which finally happened about five years later. I did not realize that this mandible was in fact THE mandible, or at least half of the holotype (the right mandible is still missing, presumably in that private collection) until I was able to download a much, much higher quality scan of the photographic plates in Kilmer's 1972 paper, and I was able to match barnacle scars between the published image and the fossil. So, we may not have the more complete of the two mandibles, but at least we have one of them, and it is my hope that there is more material in private collections and that more can be discovered in the future.
  5. Piece of ?Mammal? Bone from Southern California

    I’ve received a chunk of what I believe to be a marine mammal bone from a diatomite mine in the Monterey Formation in Southern California. It is from the late Miocene but I’m not sure what mammal or what bone it is. I know this is a long shot as there isn’t much to go off of but anybody have a clue?
  6. Below are some more of my macro fossils that I’ve recently put in 16”X12” Riker mount displays. All of the specimens in these displays come from the Miocene of Virginia. The first display with shark/ray specimens, the second display with bony fish specimens, the third display with marine mammal specimens and the last display with reptile specimens. I'm getting some more Riker mount displays Saturday and I'll post some more displays with more of my macro specimens from the Miocene of Virginia. To see a previous post with Riker mount displays with macro specimens from the Paleocene Aquia Formation of Maryland and the Eocene Nanjemoy Formation of Virginia check out the below link: http://www.thefossilforum.com/index.php?/topic/101415-a-few-riker-mounts-with-specimens-from-the-aquia-formation-of-maryland-and-the-nanjemoy-formation-of-virginia/ To see a previous post with Riker mount displays with macro specimens from the Miocene Round Mountain Silt Formation of California, the Eocene/Oligocene Chadron/Brule Formations of Nebraska, and the Miocene of Virginia check out the below link: http://www.thefossilforum.com/index.php?/topic/101441-a-few-more-riker-mount-displays-with-macro-specimens-from-the-round-mountain-silt-formation-of-california-the-chadronbrule-formations-of-nebraska-and-the-miocene-of-virginia/ Display with shark/ray specimens. The top of the display has shark vertebrae. Then there are Otodus megalodon teeth (for size reference the largest megalodon is 4.75” and the smallest is .625”). Then there are some Hemipristis serra shark teeth. The bottom has two eagle ray barbs and pieces of eagle ray dental plates. Display with bony fish specimens. The top of the display has bony fish vertebrae with a Wahoo jaw (6.5” long for size reference), a hypural fan, several bill fish bills and two small fish jaws. Then the middle has lots of fish jaws with some black drum jaws on the far left and most of the other jaws to the right being red drum. The bottom has ocean going sun fish bones including three jaws and there are some more bony fish vertebrae on the far right. Displays with marine mammal specimens. The top and middle of the display has Cetacean bulla and periotic ear bones (for size reference the largest is 3“). The bottom left has Cetacean vertebrae, flipper bones and two small jaw fragments. The right contains Cetacean teeth. Display with reptile specimens. The very top has two coprolites most likely crocodile. Then some crocodile jaw pieces with a number of crocodile teeth and a crocodile scute (for size reference 4.5” by 3.25”) on the far right. The bottom has turtle caprice/plastron pieces and a good number of leatherback turtle carapace bones. Marco Sr.
  7. Skull Found on Atlantic Shoreline

    Can anyone identify this what type of marine life this skull is part of? I found it today along the East Coast of United States - Atlantic Ocean Spoon in photo for scale. The strange up raised markings on top are perplexing. Type of Eel perhaps? It's wet from me rinsing it in sink. Thank you!
  8. Dolphin humerus?

    Picked up on beach along with numerous whale verts and bones. Very dense & heavy, with defined (yet worn) ends. Closest match I could find is a dolphin humerus... Any ideas are welcome.
  9. Mystery items from LC: Marine mammal?

    Here are a pair of head-scratchers that I found i at LC. The first is from the Pungo River Fm I thought was a bivalve steinkern, but it is not carbonate, which one would expect in the lime layers of the formation (that, or phosphate, and itisnt phosphate). There is still some matrix on it. So that leaves me with maybe some portion of the bulla/ear region of a marine mammal, but that's purely a guess. The second is from the Pliocene Yorktown Fm, and the material appears to be the same as that of cetacean tympanic bulla. But it doesn't look like one, or like anything Ive seen from a cetacean. Any ideas? thanks
  10. "Mammal Tooth" Shark-tooth Hill

    Mammals make up the bulk of my knowledge, but for this specimen I'm clueless. I'm thinking from the locality and the general look of the tooth it could be whale of some sort, possibly a dolphin? Allegedly it was found in Bakersfield California, Shark-tooth hill. I don't own this fossil so these pictures are the best I can get unless I purchase it, what do you guys think it is?
  11. Cetacean Bulla ID

    I have a whale bulla and I am hoping to get some ID help with this. It was labeled as a Sperm Whale ear bone but after searching pretty extensively, it looks more like a Mysticeti whale to me. I am far from an expert though so I thought I would post it here and see if anybody has any thoughts on it. It was a dive find in South Carolina. It is a pretty good sized ear bone I think, about 4.8 inches long. Any help would be greatly appreciated.
  12. Sharktooth Hill Marine Mammal Fossils

    I recently found a small lot of mammal teeth from Sharktooth Hill. I am doing an education program about marine mammal evolution and they looked like cetacean teeth so I bought them. I am new to fossil forum but not new to collecting marine mammal fossils. I know that you can not get a species ID from cetacean teeth but I am hoping I can get a little additional information or perhaps a suspect so to speak. I believe that the first 3 pictures are of an unidentifed Odontoceti, maybe a Kentriodon of some sort. The first two teeth were both right around 1.5 cm. The third tooth was a little over 1 inch. I am fairly certain the 4th picture is of the unidentified Odontoceti species that is mistakenly called Prosqualodon errabundas by some collectors and dealers. I think it was the Coastal Paleontologist blog that said this was an undescribed species of large dolphin. It is about 1.75 inches long and has a very inflated root. The last picture looks more like an Allodesmus than a cetacean to me but I could be wrong. If anybody has an thought or opinion, I would greatly appreciate any information.
  13. Definitely NOT going to do "the tongue test!" I have found many "rocks" that seem to have multiple fossils in them... and this could be one possible reason- it WAS sticky and did contain food at some point? Once again, newbie here.... thoughts? Thank you!
  14. Seal tooth

    So a while back, like a year and half or two years, I found one of our more prized fossils in a creek. I had no clue what it was - I mean I knew it was a mammal, but it certainly wasn't a dolphin or anything like that. Later at a PPS meeting, Bobby and Sarah ID'd it as a true seal, p1 premolar. I later decided to showcase it by doing a painting and mounting it along with a drawing of the dentition to show where it goes. Such a great tooth and I've not found any more since. *note: the painting is of a modern day gray seal - it was the closest in dentition that I could find
  15. Hi all! The Mace Brown Museum of Natural History will have a table in the community center this saturday at the Aurora Fossil Festival. I'm currently trying to write up the marine mammal assemblage from Belgrade Quarry, which appears to be transitional between the upper Oligocene Chandler Bridge Formation here in Charleston and the late early Miocene assemblage from the Pungo River Formation in the Lee Creek Mine. Bring your Belgrade marine mammal specimens to our table, I'd like to see them! Several members of this group and the exceedingly generous North Carolina Fossil Club have already donated a bunch of great specimens including earbones and teeth. Also, I just realized I accidentally left @sixgill pete off of this flyer - thanks to him as well!
  16. Calvert Cliffs Marine Mammal Vertebra?

    My son found this in the water at Flag Ponds Park near Calvert Cliffs. Based on a quick look at some of the displays at the Marine Museum, I think it's part of a vertebra of a marine mammal. Does that sound right? It's pretty well eroded so I assume it had been tossed around for a while and it looks like part of the exterior was broken off to show some of the interior of the bone. I'm sure it's too beat up to know the species, but based on the shape and size (almost three inches at the widest) is it possible to guess whether it's porpoise, seal, or something else? Thanks for any input.
  17. stranded baleen whales

    non peer-reviewed: baleen Warning:the more sensitive among you might perhaps not like to see whale carcasses hunter gatherer ecology: srep16288.pdf
  18. A few more Purisima marine mammals

    Here are a few different pieces I picked up near Santa Cruz, hoping to learn a bit more from everyone here and get some help with ID's. My guess was a smaller marine mammal, maybe a pinniped rib?
  19. Purisima formation marine mammal?

    Hello Fossil Forum! I live in Northern California, and have been learning about the geology and fossils of our area so I am very excited to have found this forum. From what I have found so far, I believe the fossils I have been collecting are from the Purisima formation based on the location and appearance. These were collected near Santa Cruz, so hoping to get some more info and possible identification.
  20. Bone Id (If It Is A Bone...)

    Hi, As I described in my trip report last week (http://www.thefossilforum.com/index.php?/topic/56838-kyushu-fukuoka-pref-ashiya-machi-japan/) I went to Ashiya machi and found what looks like to me a bone. The outcrop is from oligocene period and the matrix is made of sandstone. Found fossil were bivalve, shark teeth, and turittella which suggest a sea environment. Could you help me to ID this fossil ? I will say fossil because I do not even know if this is a bone as it would be the first time I found one. I read that at this place was discovered sort of big penguin called Plotopterum and sea mammal like seals. I read somewhere that birds bones and mamal bones were quite different so even if we cannot put any ID on this maybe, I still have the hope that someone can tell me if it's a bird or a mammal. I am waiting forward to reading your suggestion and post. David
  21. Hi, I found these 2 strange bones in a small miocene outcrop in southern california. I also found about 10 misc. shark teeth and abundant bone fragments. These bones are about 2cm long and 1.4 cm wide. What are they? Thanks.
  22. Venice Florida Diving 2014

    The dive season is firing up. Planning our first hunt right now. We will be heading to Venice FL, on the the 2nd of April and will be hunting from the 3rd to the 6th at various underwater locations. I'm extending an open invitation to any underwater fossil hunters to join us in our quest. I can also take 1 non-diver or 1 want-to-be diver, but only once and only one diver per day! All dives will be from the beach. Dive conditions are normally benign in the gulf, but visibility can be really poor. Viz: Hope for 10 feet, pray for 3 feet and get 6 inches. Temp: water temp this time of year will be in the low 70's. Air temp will be in the high 70's low 80's. Recommend 3mm to 5mm protection. I'll give free dive refreshers to those that have not been down in a while. I'll also teach a free underwater hunting class at the beginning of each day. PM me if you are interested and I'll send more details. It is not uncommon to find 1 to 3 hundred teeth per dive if you know where to hunt
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