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Found 23 results

  1. shark57

    Yorktown Formation Hexanchus griseus Tooth

    From the album: Fossils

    This is a 1.6 inch blue-enameled Hexanchus griseus (aka gigas) from the famous Lee Creek mine. It is from the Pliocene Yorktown Formation sediments.
  2. Since my first time finding one I have been obsessed with cowshark teeth. I’ll share some of my collection and please share me what you have. Thanks! Notorynchus Cepedianus, Calvert fm Hexanchus sp, from Chile Notorynchus Kempi, Kazakhstan Notorynchus Colonsii, Muddy Creek, VA
  3. ClearLake

    Small Lee Creek Shark Tooth

    I received some matrix from @sixgill pete a while back in a TFF auction and picked most of it a while back and ID'd the bulk of the teeth and other material. Lately I have been going back through some of my sharks teeth and looking more closely at items I was unsure of These three teeth are one such group out of this matrix. I have read Purdy et, al (2001) a bunch of times, looked at elasmo.com for hours on end, read dozens of threads on here and am still a bit confused/uncertain. So, I figured why no just ask and get several more opinions, I always appreciate what folks here have to offer. The teeth are shown in the pictures below and it is mostly the big (relatively speaking) one (#1) I am most interested in. The two smaller ones (#2 and #3) are fairly similar looking although #3 is much more worn, and are likely small symphysial teeth from ???. Tooth #1 is 7.4mm tall and about the same width. My first guess (wish?) was a Megachasma even though I know these are extremely rare out of the Lee Creek material. It sits very flat on it's broad base and the crown is slightly curved lingually, but not as much as many depictions of this genus. There are no serrations on the crown, but it is somewhat worn and the tip is missing, so that could factor in. I have looked at all the various posts on here of possible Megachasma's, most of which are probably not (more likely symphsials of any number of sharks) and looked at Don's Megachasma that Dr. Shimada confirmed and still was not 100% convinced one way of the other. This tooth does not look dissimilar to what is in Purdy or the description written there. Some of those crowns are not very "bent" either, nor is the specimen that Don posted very curved as far as I can tell. But then I see many posts by @MarcoSr and @Al Dente and others that show symphesial teeth from Hexanchus, Carcharhinus, Hemipristis and Galeocerdo that all bear similarities. So, I ask what you think and appreciate any and all insights that can be offered. And here are some close ups of the crowns on each of the teeth just in case that adds anything useful.
  4. Well over a decade ago I found a Hexanchus shark tooth in matrix in the Monterey Formation in California. It passed through many hands later, eventually ending up with Doug Donald. I think it sold in the auction of his collection when he passed away. Anyone know who has it now?
  5. Well my little Eocene Castle Hayne Formation pit has coughed up another amazing Hexanchus agassizi tooth. That is 3 very nice rooted ones in about 4 months. Here it is. I also found this really nice Macrorhyzodus americana the same day Here is a sampling of other teeth and such from there. These are not from the same day, I have not cleaned the rest of the finds from that day yet.
  6. fossilsonwheels

    More cool STH Micros

    We recently got some great STH Hexanchus teeth from @JBMugu and he was kind enough to send us some great micro matrix. I always enjoy searching for micro shark teeth and the STH material usually provides quite a few surprises. This batch was no exception. I have only searched about about half of the matrix but so far it has given us some really cool shark fossils. I found a few Hexanchus teeth which included a tiny lower (pic 1) and a few commisural teeth. In our previous searches, we found a total of 1 partial Hammerhead tooth. This matrix was, comparatively speaking, loaded with Hammerhead teeth. We found 6 small ones, mostly complete specimens and a large one. (Pic 2) We also found an Alopias tooth, a bunch of excellent complete Heterodontus teeth including a high number of anterior teeth, a lot of Triakis teeth, and much more. I think we came across another Squatina vertebra as well. One of the more interesting finds was a what appears to be the gill raker of a Basking Shark. (Pic 3) I am posting a few few pictures and will take more later on.
  7. Ludwigia

    Hexanchus andersoni (Jordan 1907)

    From the album: Pisces

    3cm. at the base. Miocene Found at Sharktooth Hill, Kern County, California Thanks to Tony (ynot) for this one.
  8. I have found several smaller fragments before, but never an intact one. This one turned up at the end of a very long day and I fortunately spotted it as my son was shoveling matrix into the sifting table. I startled him mid-shovel by shouting "STOP!" when I saw a row of white points sticking out of some matrix. Son was just about to throw another shovelful on top of it. Nice reflexes by him to change course mid-air to avoid me (now shielding the tooth with my body - LOL). Worth it. :-) Definitely had potential but I didn't know how much root was going to remain. After some careful cleaning I was thrilled. I can see from those cracks why I've had such a hard time finding a complete one.
  9. Chase_E

    Hexanchus sp.

    From the album: Misc. Cenozoic Specimens

    This might be H. agassizi, I am unsure.
  10. We know that fossils are not the priority for people at the moment. They are not for us either but I have found a good amount of stress relief in going through a large donation we got. The material is all from STH and we have enough to make a trade. It was part of the donation actually. Extra fossils for sale or for trade to improve our collection. I would like to avoid sales or doing smaller trades just for shipping reasons so I decided to put the trade stuff out as one lot. Given the current state of the world, consider this a post corona virus trade offer. We would probably not ship for 2-4 weeks if not a bit longer so we would not expect immediate shipping. Nobody needs to risk a trip to the post office. I did however want to put it out there. I think a little engagement among fossil nerds may be a good thing at this time We tried to put together a pretty decent representation of the shark and ray fauna plus a variety of colors. Miocene Temblor Formation, Round Mountain Silt Member Kern County, California Carcharodon hastalis- 8 teeth, variety of positions, variety of colors, none bigger than 1.5" Cosmopolitodus planus- 8 teeth, upper and lower, beautiful color array Isurus desori- 1 tooth Hemiprisitis serra- 1 symphyseal tooth Hexanchus andersonii- one partial tooth (I think upper) Heterodontus- 1 lateral tooth Physogaleus- 4 teeth Galeocerdo- 3 teeth Carcharhinus- 3 teeth Squatina Squalus Galeorhinus Included but not pictured- a couple of Cetorhinus teeth and a Mustelus tooth. Various Batoid fossils. We are open to any shark tooth offers but we do have some specific needs/wants. I listed them below. GW teeth Squaliformes- any family except Squalus Orectolobiformes- Hemiscyllium, Rhincodon, Ginglymostoma (Eocene & Cretaceous) Otodus sokolovi Isurus oxyrinchus and retroflexus some specific Cretaceous material- Cardabiodontid, Squatina, Ginglymostoma, Cretorectolobus, Odontaspis, Cantioscyllium, Cretoxyrhina PM us if you have any questions, need to see additional pictures, or want to make an offer.
  11. Yesterday, I got back from a family vacation to California. While there, I was able to spend two days digging at the Ernst Quarries. The weather was beautiful and the teeth were plentiful! Carcharodon planus hiding in the rock.
  12. Ludwigia

    Hexanchus microdon (Agassiz 1843)

    From the album: Pisces

    15mm. long Eocene From Khouribga, Morocco
  13. sharko69

    Holy Cow!

    Found this beauty during a business trip to Southern California. My first complete cow shark tooth. My best personal find. Measures just shy of 2” from Capistrano formation.
  14. Anomotodon

    Hexanchus symphyseal (my first one!!!!)

    From the album: Eocene vertebrates of Ukraine

    8 years of collecting in that area, and finally a cowshark symphyseal
  15. From the album: Shark teeth and associated fossils from Antwerp, Belgium

    Hexanchus, Belgium, Antwerp area
  16. From the album: Shark teeth and associated fossils from Antwerp, Belgium

    Hexanchus Griseus, Belgium, Antwerp area
  17. Anomotodon

    Hexanchus microdon

  18. Anomotodon

    Hexanchiform anteriors

    From the album: Eocene vertebrates of Ukraine

    A - Hexanchus microdon B - Notorynchus kempi
  19. Max-fossils

    Six-gill cow shark

    A nice upper shark tooth from the six-gill cow shark, from Chile. Possibly from a male. One cusp is missing (far right in first photo).
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