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Found 919 results

  1. With this post I have now posted on TFF at least one jaw from a species from each of the 9 shark orders (Hexanchiformes, Echinorhiniformes, Squaliformes. Pristiophoriformes, Squatiniformes, Heterodontiformes, Lamniformes, Orectolobiformes, and Carcharhiniformes). To understand and id fossil shark teeth it really helps if you are familiar with extant shark teeth. This post contains pictures of an extant Echinorhinus brucus Bonnaterre, 1788 (Bramble Shark) jaw. Links to my previous TFF posts on extant shark jaws can be found at the below TFF link. My Extant Shark Jaw Collection There are only two species of Echinorhinus, Echinorhinus brucus (Bramble Shark) and Echinorhinus cookie (Prickly Shark). There is some dentition/tooth-design detail given for the genus Echinorhinus in the published literature but no features that might provide a means of distinguishing between the two extant species. The only sure way to id an Echinorhinus jaw to the species is to see the actual shark that the jaw came from. To illustrate the differences in the two species of Echinorhinus I’m providing some illustrations from Compagno 1984 VOL. 4 “SHARKS OF THE WORLD An Annotated and Illustrated Catalogue of Shark Species Known to Date Part 1 - Hexanchiformes to Lamniformes”. Echinorhinus brucus (Bramble Shark): Echinorhinus cookie (Prickly Shark): Note that Compagno calls the Echinorhinus scales dermal denticles because of their large size and features. These scales look much more like the dermal denticles from the mid-line of rays than the much smaller placoid scales from other sharks and from rays. Echinorhinus brucus (Bramble Shark) jaw, 7 inches by 7 inches, (This jaw is definitely an Echinorhinus jaw and I’m using the species id provided by the seller of this jaw who is a very reputable seller of shark jaws) that has been professionally cleaned, prepared & shaped: Echinorhinus jaws are extremely thin, almost paper thin. Here is a random picture of an Echinorhinus jaw from e-bay. This is what an Echinorhinus jaw would look like without being professionally cleaned, prepared & shaped. Below are teeth from the jaw. The teeth display monognathic heterodonty. The teeth are very similar in both the upper and lower jaws and don’t change a lot moving distally in the jaw. Adult teeth can have 1 or 2 mesial and distal cusplets which are absent in young sharks. Weak serrations can be present. The below teeth show evidence of weak serrations. Because a number of the active first row teeth in this jaw are damaged, I’m only taking pictures of the better teeth. Teeth from the right and left side of the upper jaw: UR1 (10 mm): UR2 (10 mm): UL 4 (10mm): UL 8 (8 mm): UL9 (5 mm): Teeth from the right and left side of the lower jaw: LR2 (12 mm): LL 5 (10 mm): LL 7 (10 mm): LL 9 (7 mm): LL 10 (4mm): You can see in the below pictures that there are 4 upper rows of teeth and 4 lower rows of teeth in this jaw. The upper jaw has 9 tooth files left and 10 tooth files right of the symphysis. There aren’t any symphyseal teeth. The lower jaw has 10 tooth files left and 10 tooth files right of the symphysis. There aren’t any symphyseal teeth. Marco Sr.
  2. Interesting story. https://riverheadlocal.com/2018/12/14/local-teacher-finds-likely-fossilized-shark-tooth-on-baiting-hollow-beach/
  3. Here's a couple of quick hunts I forgot to post from the last two weeks. Post Oak Creek and North Sulphur River Texas. I really like the ammonites.
  4. Hello! These were all found in Monmouth County, New Jersey (Late Cretaceous). I have believed the first tooth to be Xiphactinus Vetus for years but am a little thrown off by the general texture of it and after searching images of Xiphactinus teeth, I can't find another that looks similar. I have found deteriorated Mosasaur teeth with a similar appearance so I was wondering if it could just be stream-worn. The tooth is about an 1.5 inches long, has two very defined cutting edges and a nice curve (which are all consistent with X. Vetus). The last thing I could add - it either has 'fluting' or is faceted but I'm not sure how to determine that. The second set of pictures is of different shark teeth from the same location. As always, all help is greatly appreciated! -Frank
  5. North Sulphur River

    I had a fun trip looking for shark teeth and artifacts yesterday at the North Sulphur River Texas. I found a large Enchodus tooth, nice shark tooth, mosasaur jaw section, other assorted fossils and some cool artifacts. Weather was perfect.
  6. Shark or Mosasaur Vertebrae?

    I found this in the gravel bed of a creek today in Grayson County, TX. Is it a shark vertebrae, or possibly mosasaur? Thanks for any help.
  7. Just a simple question by a newbie ..... Just started this new hobby and found my first couple of teeth. Need some directions about how to identify. Books, websites, forum threads etc. Just a little push in the right direction and I'll get moving ....
  8. I have this tiny shark tooth in my collection from America, but it kinda looks like a tiny, worn meg?
  9. Today I went for my first "serious" (ahum) shark teeth hunt. Over the last few weeks I was keeping my eyes open while walking the beaches of Sullivans Island and Isle of Palms with my wife, but today it was "game on". Left the house at 8:00AM and drove to Folly Beach as I had been reading that of the beaches closes to me that was the best to look for teeth. Weather was nasty, cold and windy. Tide was still high but outgoing. Hardly anybody on the beach. Spent approximately 3 hours without finding anything. I was mainly looking in the accumulations of shells, seaweed, rocks, pottery higher up the beach. Saw one person picking up things at the waterline and decided to ask her what/how she was doing. We had a friendly conversation. I explained that it was my first time. She showed me a handful of small teeth that she found by looking for them as the shallow waves are rolling ashore. I decided that, as I had nothing to lose, to follow her method/advice and started to look close to the waterline as well. I do not think that more than 5 minutes passed before I found MY FIRST TOOTH EVER !! I know that compared with what others here report it is not much, but for me it meant that I had succeeded in my quest. Shortly after, I found a second one, but at that point the nasty conditions were taking their toll and I decided to call it a day. I will be back.
  10. Shark tooth ID

    I got this tooth a while back with some other fossil, it had absolutely no indication of the place it was found in, the age, or type of shark. One edge has a strange bump on it that I have never seen in any teeth before. Thank you.
  11. Shark teeth ID

    I have recently been given a number of shark teeth by a relative who used to collect. I would appreciate any help that members might be able to offer. I will post 3 photos. On the first photo am assuming the 4 on the left are Sand Tiger and the middle bottom 2 are Odotus? Unsure about the rest.
  12. Megalodon?

    Hello everyone! This little gem was found in Florida at Manasota beach this Thanksgiving weekend. Crossing my fingers its a megladon, but not 100% - Could anyone confirm and estimate the age? Would love to have some info on it! Thanks!!
  13. Is this a Baby Megalodon Tooth?

    Hi Friends, I recently read a post "Show Your Smallest Megalodon Teeth" and I looked through my small teeth to see if perhaps I do have a meg. All my teeth are from SW Florida beaches, worn from the ocean. These shown have no serrations, but a thick root and a basal groove. The first one shows front and back and is 5/8" x 1/2". The second one shows the penny. Are they megs? If not what shark are they? Thanks!
  14. Very Large Otodus obliquus?

    I would have called this Otodus obliquus, but this morning I was reading, and got confused, about these teeth from Morocco. Now Im not sure what this is called. Even with the tip missing, this tooth measures just over 3.5 inches. RB
  15. Fossil Teeth ID

    These were both found along Calvert Cliffs where the older, Calvert Formation, is present. The first tooth with the cusps is smooth edged. The 2nd tooth is a bit worn, but does seem to have had serrations. I have been identifying it as a small worn posterior Meg. The new tooth made me check it again and wonder, but it does still appear to be a Meg and not something older to my eyes. What I come up with for ID puts the tooth with cusps out of place at Calvert. Seems like it should be from an older formation. Both were found this season, but many months apart. Distance between the finds was pretty close, I'd say 1/8 mile or less . I am a kayaker; these were both from an area easier to reach by kayak, and where I do tend to find older, smaller teeth.
  16. Shark Teeth

    Hey everyone, My friend has three shark teeth that he would want identified. Below are the three teeth. I think the left one is Mako, the middle is Otodus, and the right is baby or juvenile megalodon. What do you guys think? Thanks!
  17. Went out last Sunday for a few hours to a site north of Lake Brownwood here in Central Texas. We have had like 14 inches of rain over the last month so I have been wanting to go but this is the first time I have had. Found a couple of broken Petalodus and some echinoid plates to add to my reconstruction. Found lots of other stuff but left it for the next hunter.
  18. Hey, everyone! I'm looking to trade for some shark teeth, preferably odd/obscure/rare teeth, but I'm open to any interesting species. I'm offering to trade this Kem Kem Carcharodontosaurus tooth, but am willing to also trade some other shark teeth as well.
  19. Shark tooth found in Palm Beach area of Queensland, anyone ID it? Only approx 1.000" size but looks very old. They are dredging at the moment and this may have come up, doesn't seem to fit with current sharks.
  20. Isurus sp.

    From the album Fossil Collection

  21. Fossil shark teeth ID

    just found my camcorder so here are my first pics. i am unaware of where these come from and sorry if these pics are bad my camcorder is really old XD
  22. Shark tooth ID help please

    I found this shark tooth while walking down a north Texas creek. I have no idea what species it is and I’m hoping someone here can help. Thank’s!
  23. Shark tooth

    From the album Denton County, TX

  24. Shark centrum

    From the album Denton County, TX

  25. Shark centrum

    From the album In-Situ Shots(various locations)

    10-28-18 Denton County, TX