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  1. The era between the Miocene and Pliocene (23-2.3 Million Years ago) was, like the Carboniferous era 300 Million Years before, a golden age for the Chondricthyans. Not only was there a massive explosion in the diversity of grey sharks, but there was the emergence of perhaps the largest number of large macropredatory shark genera (sharks greater than 3 meters (10 feet) in length) currently known in Earth's geologic history. This includes the Giant Thrasher Shark Alopias grandis (which grew up to 13 meters (feet) in length) and the famous Carcharocles (Otodus) megalodon (which grew up to 17 meter
  2. The Chondricthyans (including the sharks and rays) have been around and keeping the ocean's ecosystems healthy for about 420 Million Years. Today, in celebration of this, I've decided to do a little fun post and list the eight times in Earth's history truly massive chondricthyans have emerged. Hope you all enjoy!!! The First is the Devonian, where there is at least one confirmed fossil (CMNH 5238) of a large currently unnamed Ctenacanthiform shark that reached lengths of 4.2-5 meters (13-16 feet) in length. https://www.mdpi.com/1424-2818/15/3/318 The
  3. Marco90

    Help to Identify Big Shark Tooth

    Hi everyone! In an online auction I found this shark tooth. It is indicated as "Otodus megalodon tooth", found in West Java, Indonesia. Unfortunately there are no further details on the provenance. The shape looks very different than typical Megalodon teeth, but I admit I'm not an expert. Could it be another species of Otodus genus?
  4. Hey all! I’m in search of an Otodus Obliquus, specifically one from the US. I have other shark teeth to trade. I have some Cretaceous teeth, Megalodon, Angustiden, Some hastalis. If someone has one they may trade PM me! I’ll gladly send some pictures of what I have to see if we can make a deal! Thank you!!
  5. Fossil_Adult

    Crocodile Skull Chunk

    I went to douglas point a few days ago, eager to get a large Otodus. What I did not expect to find was a skull fragment with teeth still embedded inside! None of the teeth are complete, but there is a lot of them, and it’s a pretty nice sized chunk of crocodile skull. I wasn’t even planning on doing douglas point that day, but we looked at both of the parking lots of both places, purse state, and douglas point, and I decided that zero cars was better than trying to navigate the beach with over 12 or so cars parked. There was no room for us to pull in anyways so I chose douglas point
  6. on a recent trip to barton, i found what i believe to be otodus auriculatus, but have never once heard let alone seen one found at that location before. was wondering if anyone here had found anything similar there
  7. Largemouth Bass

    Is this an Auriculatus?

    The seller states that this is a ~13 mm posterior O. auriculatus tooth from Bone Valley. It looks similar to the lower posteriors in this paper, but I would like to get a more educated opinion before adding it to my collection. Unfortunately, these are the highest quality images given.
  8. Bjohn170

    Couple Aquia trips

    Two recent trips to the Aquia formation along Maryland Potomac River yielded some pretty nice finds. First trip started slow just finding your average sand tiger and goblin shark teeth but by the end scored a few Otodus; unfortunately they were all worn with feeding damage but the largest at 1.95” is still quite the find. The two small Cretolamna were nice additions to the haul as well. Second trip the water was very high, even at low tide but I had they day off work so I wasn’t going to waste it, and I’m glad I went. Again all my Otodus have some damage to them but the bigger one measuring ju
  9. Elasmonut

    Otodus Obliquus tooth set

    Choosing a layout for my Obliquus "artificial" set, and wanted to see what you guys think. Largest tooth about 8cm, need some more small ones, but Im pretty stoked with this, now to build a box.
  10. Fossil_Adult

    Purse state park

    This is probably one of my best days out in the Paleocene I’ve had yet. I went to purse state park today and upon arriving, there were at least 6 cars. The beach was flooded with people, and boot prints were all over. It seemed well traversed. The tide was also coming in, with some of the beach inaccessible without wadders or high boots. It was slow going on the first half of the day but the second half couldn’t have been better. I was finding one stunning fossils after the next. This was a pretty good outing, and I will have to return as soon as possible. Here are all the finds: E
  11. sharkcollector

    Otodus body size to vertebrae

    Recently, after going to my favorite fossil store, I aquired a Otodus Obliquus vertebrae. It came from a formation in Morocco, and is approximately 54 million years old, from the pliocene. Otodus is an extinct mackerel shark, related to the far larger O. Megalodon. The fossil is approximately 10.5 centimeters or 4.13 inches. I was wondering how large the shark would be relative to this vertebrae (assuming this was the largest vertebrae from the shark.)
  12. I have been collecting the Aquia formation in several different locations over the course of a few months or so. I haven’t been able to post the finds yet, so I decided that after all this time, I would just group them all into one rather than do a bunch of different posts. The locations I got these from were pg county, and Douglas point. I found a lot of really good stuff, it’s been very productive lately and I’m especially loving the new site in pg county. A lot of good fossils have been coming out of there recently. I am really excited for some of the future trips coming up, but until then,
  13. Recently I found a really interesting article rom 2021 describing fossilized specimens (in the form of teeth) of the giant shark Carcharocles (Otodus) megalodon from Buenos Aires Province, Argentina. Here is the article: De Pasqua, J., Agnolin, F., Rolando, A. M., Bogan, S., & Gambetta, D. (2021). First occurrence of the giant shark Carcharocles Megalodon (Agassiz, 1843) (Lamniformes; Otodontidae) at Buenos Aires Province, Argentina. Revista Brasileira De Paleontologia, 24(2), 141–148. https://doi.org/10.4072/rbp.2021.2.05 https://www.researchgate.net/publication/35
  14. G'day everyone, Im pretty new here so I hope this is in the right spot. I am a hobby collector that is trying to put together a first row reconstructed set of Otodus Obliquus teeth. I would love to hear about any rescources or examples, pics or even advice or opions from others here, to help me choose tooth positioning and sizes. I have based my set so far, on a few pics of examples put together by other collectors like Hubbell, and Rathbone, and read a few old papers, but there is not much. Any advice would be greatly appreciated, and I can provide better pics if needed.
  15. njcreekhunter

    Big New Jersey Auriculatus

    A few days ago I took a trip to an Eocene/Miocene site in New Jersey with a friend. It was going be a quick trip so we weren't expecting very much. Not long after we started digging my friend scored a nearly complete Otodus aksuaticus. A little while later when I lifted my shovel out of the water I saw a big tooth fully exposed on my shovel. I instantly knew it was one of my biggest Otodus auriculatus teeth from NJ. This tooth measures 2 11/16 as it is and would've been over 3 inches if complete. It is my second largest auriculatus tooth from New Jersey. Despite not expecting too much, this tr
  16. Hello everyone. I'm making my rounds across my different groups and forums, so if anyone has seen these photos before you'll have to suffer through them again. From June through the end of August I locked in on a concentrated area of sand tigers, makos, and my favorite mega-tooth shark: Otodus auriculatus. I didn't find one every trip out, but my most plentiful day gifted me 3, and my last trip out provided me with the largest tooth I have ever recovered from the garden state. I battled minuscule mosquitoes and a horsefly that was every bit horse as it was fly. Despite nature's bes
  17. Recently was handed down a Megalodon tooth. Started doing a little research on megalodon teeth, and noticed people make replicas/fakes. I am no expert on shark teeth. So, I just wanted to reach out and see if anyone with expertise could determine if the tooth I have acquired is a replica or real. thank you!
  18. AJ the Tyrant

    Is it a meg or a chub?

    I’m looking into this wonderful 5.59” Cuban tooth, but I’m having a hard time figuring out if it’s a meg or chub. It has cusps, but they’re minimal and not very obvious. Seller says it dates from early to middle Miocene, though that’s not very helpful in identifying this tooth. I’m thinking chub due to the cusps existing, but I’d like to gather more opinions on the matter.
  19. fossil_lover_2277

    Moroccan Eocene shark teeth and jaw bone

    I recently purchased some more Moroccan fossils, including several shark teeth...I tried IDing them on my own, here are my guesses (scale is in inches; 1 inch = 2.5 cm), am I close? I don’t have much experience IDing Eocene teeth, so I’m not sure. Thanks!!! 1. Otodus obliquus 2. Cretolamna appendiculata 3. Cretolamna aschersoni 4. Striatolamia macrota 5. Jaekelotodus spp. 6. Brachycarcharias atlasi 7. Tooth I have no idea on (had cusps but they bro
  20. I'm finally getting around to posting pictures of this Moroccan shark tooth, which I believe is either a transitional Otodus obliquus or a transitional Palaeocarcharodon orientalis. My original thought was Otodus but @Al Dente flagged in the mailbox thread a few weeks ago that it might be Palaeocarcharodon instead. Any thoughts on this one? The tooth measures 49 mm on the slant and is 39 mm wide across the root.
  21. Jerrychang

    Serrated Otodus tooth from morocco

    Recently bought this Otodus tooth from morocco. The tag said that this is a Otodus sokolovi, but I don’t know what is the difference between auriculatus and sokolovi or maybe thay are the same species? Besides, if we don’t know where the teeth came from, what is the difference between auriculatus and angustidens?
  22. I can't figure out if this tooth is a normal Otodus tooth or if it's something else. I think it looks like megalolamna paradoxodon tooth, but to my knowledge, they aren't found in Morocco. I would appreciate any help or I'd on this tooth. It doesn't have any serrations and it has only two cusps. It's 3,5 cm from root to tipp.
  23. steviefossils

    Monmouth Chubutensis

    Hi all. I wanted to share this chub tooth I found towards the end of 2021. From Monmouth, NJ, I think Kirkwood formation. One of my targeted species for the year and was able to find one in about 20 hrs worth of searching.
  24. Fossil_Adult

    I thought it was a bone…

    I went to my local spot, Henson creek, and decided to check things out. I arrived and found some stingray and sand tiger shark teeth. I stumbled upon what I thought was bone, it totally turned out not to be bone. I am very happy about this find, even though it was the only thing of significance found today it doesn’t matter. It’s so perfect. It will probably be a while before I find another otodus tooth that size again! Here’s the photos: The total length is over 1.5 inches, and would probably be hitting 1.75 if complete. What
  25. Jerrychang

    Cusps of mega-toothed shark

    We should all agree that the side cusps of these shark gradually disappeared with evolution, but how did they deform in the process of shrinking and disappearing ? Does the cusps’s tip gradually move closer to the middle crown and fuse together? Just like the two teeth in the picture below, is the brown specimen older than the other?
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