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Shark Vertebra (possibly Otodus/Carcharocles auriculatus or angustidens) from the New Bern Quarry in North Carolina
shark57 posted a gallery image in Vertebrates
From the album: Fossils
1.5 inch lamnid type shark vertebra in matrix from the New Bern quarry. Not sure if this is from the Oligocene River Bend Formation or the Eocene Castle Hayne Formation. If you think you recognize which formation this is from, leave a comment.-
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From the album: Fossils
This is my largest megalodon. It measures 5.17 inches slant height. I found it on the James River and from it's appearance I believe it is from the Pliocene Yorktown Formation.-
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From the album: Fossils
This 4.5 inch meg was found at a land site in central Virginia along the contact of the Eastover and Calvert Formations. The colors make me think it is likely an Eastover tooth.- 1 comment
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Found this chub tooth from NJ Miocene. Tooth is 1.25" on a straight vertical line from left lobe to tip (not along the diagonal). Took a lot of effort: 2.5 years to narrow down a location, and 6 hours of searching. Found it in the last half hr of the trip. Satisfying to have found, but a bigger tooth would have been nice for the effort required. That's just the luck of the hunt though. Hopefully there will be more to come. Thanks for viewing.
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Hi people. So I want to get a meg tooth for my son and I'm a complete novice when it comes to spotting a fake or a tooth that has been restored or polished. I was wondering people's thoughts on this tooth for all the above.
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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 trip ended up being a great one.
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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.
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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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I plan to collect fossil teeth from cretolamna to megalodons, and arrange them in order of color and size. I have got these three and are still working on it. Although they are not big and not perfect, they’re still very beautiful and fulfilling when placed together. It’s quite hard to find the right size shape and color. Might need some help with the auriculatus.
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Finally broke down and got a few nice Indonesian megs. This is the nicest one, it's blue and 5 3/8" long. Fits in nicely with my small collection of larger megs.
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From the album: Sharks
Hubbell (juvenile) megalodon, likely from the East Coast. I don't understand the hype surrounding megalodon, but this one was cool enough for the collection. It has good preservation, and the tip is spalled-off from feeding.-
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South Alabama Eocene Period Fossil Hunting w/ the Kids *Best Find This Far
AveReel Outdoors posted a topic in Member Collections
So, I've been hunting sharks teeth on and off in South Alabama since a young child. Since my two kids have gotten self sufficient, me and the wife have been taking alot of trips to the river to look for teeth. Finding the normal small teeth, for our area, got me to wondering if there were bigger teeth in our area. That led me to some late nights of researching the ins and outs of my area. The area we are close to has alot of Eocene era fossils and I quickly learned the Carcharocles auriculatus was THE SHARK during this time period. So, my goal became to find a complete tooth in my little honey hole. We would spend weekend after weekend at the river with the kids. My 8yo and 3yo right there with us digging and sifting! Both who want nothing more than to become paleontologist when they get older and sit there picking out ray plates, vertebrae, and teeth with excitement growing every time they see something in the sifter. Over the past several weeks, we have dug 100s of teeth and many other cool fossils which I have added to our collection but just chips of the elusive Carcharocles auriculatus teeth were all we were finding. Last night while at church, I was talking with a family about our finds thus far. You could see their kid's eyes lighting up with curiosity and they asked if we could take them sometime. We had originally planned on taking time to do some house stuff but I could tell their kids really wanted to go. We made a plan to meet this morning before the rain. We made the long hike to the hunting grounds and began to dig and sift. One after the other, the kids and their parents were yelling with excitement finding their first teeth! I was digging around getting dirt for them to sift when I felt that unmistakable sound of hitting something solid. I cleaned around the area and I saw a serrated edged tooth. Surely not...not a complete tooth. I carefully cleaned around the area to make sure not to damage it. I couldn't believe my eyes. A full tooth! I began to shake a little with excitement. I pulled it from the earth and showed everyone. This only pumped them up even more. Although this tooth is rare for our area, we kept digging with no luck of finding another one. The rain began to come in so we cut the trip short but I've babied this thing around all day, picking it up to make sure it is real and I wasn't dreaming. I know it's no 4" tooth but for me, it may as well be. It's become an infatuation for me and the family, so much so I have been looking at planning a family vacation around fossil hunting. My 8yo has expressed alot of interest in finding a megalodon tooth. So, if you guys and gals know of a good place I can take the family to do something like this please share! Below are a few pictures of the things we have found over the past few months as well as my Carcharocles auriculatus tooth I found today.- 13 replies
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No modern phylogenetic analyses for extinct lamniformes?
Macrophyseter posted a topic in Questions & Answers
Taxonomic debate over extinct lamniformes remains a big thing, but I've noticed that it seems like there hasn't been any studies that use modern phylogenetic techniques (i.e. maximum parsimony) to resolve issues with extinct taxa (i.e. Carcharodon, Isurus, Macrorhizodus, Otodus). Is there a reason for this absence, or perhaps I simply have not come across one that already exists? I suppose it's possible that dental characteristics alone as character codes for a phylogenetic matrix may not be viable...-
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'Megalodon' tooth, possibly Carcharocles chubutensis or Otodus augustidens
JohnBurrows posted a topic in Fossil ID
While this tooth is obviously damaged, the cusplet sticks out to me. It is a decent sized tooth around 3 and 3/8" (84MM) long. Serrations are evident, although have been eroded. This tooth came from the James River, South Carolina. I cannot decide whether it looks more like auriculatus, chubutensis, augustidens, or megalodon. Carcharocles/Otodus... take your pick. I'd appreciate any input - thank you.- 7 replies
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I've been going through my shark tooth collection recently trying to refine my ids. This one here has me somewhat stumped. I had identified it as Carcharhinus priscus, but I'm not at all sure any more and am now starting to wonder if it may be a chub or great white. The first photo, which I think is the labial view, seems to fit, but what I believe to be the lingual view (2nd photo) has me confused. The tooth is from the southern German Miocene Burdigalian. Slant length 15mm. Any advice here would be appreciated.
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I have seen several names for megalodon all with a different genus, which is correct? Edit: Another question, is cretalamna appendiculata the ancestor of otodus obliquis? Is there anything in between those if they are related? Do we know megalodon ancestry past C. appendiculata if it is directly related to O. Obliquis?
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Is this Megalodon tooth real?
Peter4646 posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hi everyone. I am new to collecting fossils and have recently acquired my first 3 to start my collection. I have always been extreamly fascinated and intrigued by dinosaur bones and discoveries found all over the world and am really excited to have finally purchased my first few. Can anyone possibly give some feedback on this megalodon tooth i have and let me know if it shows any signs of being fake? My grandpa has had this one since he was a kid and decided to give it to me to add to my collection... he is unsure if it is real. Any feedback would be appreciated.- 8 replies
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I received the final piece needed for my Megalodon evolutionary set today! The hardest tooth to obtain by far was the Carcharocles mugodzharicus, and I would like to thank @MarcoSr for his help with that search as well as the generosity with which he shared knowledge about it. I'll mention that I acknowledge the various debates around species naming and went with the ones I believed to be the best fit. I kindly request that we not get into it on this thread.
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Hey everyone, Recently took a trip with a buddy of mine down to South Carolina to search for megalodon teeth. We found many small teeth along with some decent sized ones. These were found in the general area between Charleston and Summerville. The ruler is imperial. Big thanks to everyone who offers their guesses Pictured are three of my biggest from the whole trip. What are they?
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This group of teeth should be from the Eocene period? Carcharocles Auriculatus I am guessing due to the size of the cusp?? Teeth are 1.4" and found in the Chandler bridge formation.
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Re-dating the extinction of Otodus/Carcharocles megalodon
Boesse posted a topic in General Fossil Discussion
Hey all! This week my colleagues and I published a paper we spent most of the last decade sweating over. It is an exhaustive report of all known late Miocene-Pleistocene records of teeth of Otodus (aka Carcharocles) megalodon teeth from the west coast in an attempt to estimate the date at which O megalodon went extinct. Aside from some conspiracy theorists who will wait until they die and not see a live 'meg', we all know it's not living today as there is not a shred of positive evidence indicating its existence. We know it's around in the Miocene, and the early Pliocene. Did it survive into the Pleistocene? End of the Pliocene? or become extinct sometime earlier? These questions require serious thought because it has direct implications for whether or not O. megalodon went extinct at the same time as a bunch of weird marine mammals or if it was killed off by a supernova known to have occurred 2.6 Ma. An earlier study pooled fossil occurrences from around the globe and statistically reconstructed a mean extinction date of 2.5 Ma, with significant error (~3.6 Ma to 100ky in the future being the max and min extinction dates). We found that in the California record, reliable occurrences are only found in early Pliocene rocks. All examples of late Pliocene or Pleistocene teeth were either poorly dated, reworked from Miocene rocks, had poor provenance, or are completely missing (and never photographed) and therefore the identification cannot be confirmed. We thus predicted a 3.6 Ma extinction date. To test this, we re-analyzed the dataset published in 2014 but chucked a bunch of bad data and exhaustively re-researched the stratigraphy of each locality and corrected about 3/4 of the dates in the remaining dataset, and added our new California records. When we analyzed this corrected dataset, our margin of error (the time between the max and min extinction dates) shrank from 3.6 million year long interval to 900,000 years; *probably* extinct by 3.6 Ma (mean extinction date), definitely by 3.2 Ma (min extinction date), and possibly as early as 4.1 Ma (max extinction date). This extinction therefore precedes the 2.6 Ma supernova, as well as the Plio-Pleistocene marine mammal extinction (which in all likelihood was not a mass extinction or an extinction event, rather just a period of higher extinction/origination rate). About 4 Ma is when fully serrated Carcharodon carcharias teeth show up in the North Atlantic, indicating when the two overlapped, however briefly. We think this biotic event matches best - the mechanics of exactly how this was driven are to be figured out by someone else, but perhaps adult Carcharodon outcompeted juvenile O/C megalodon prior to becoming gigantic. Some analyses of Otodus lineage growth rate is going to be necessary. Here's the open access paper here: https://peerj.com/articles/6088/ Here's a blog writeup I did for PeerJ here: https://peerj.com/blog/post/115284881293/early-pliocene-extinction-of-the-mega-toothed-shark-otodus-megalodon-boessenecker/ Excellent summary in Nat Geo: https://www.nationalgeographic.com/science/2019/02/megalodon-extinct-great-white-shark/ CNN: https://www.cnn.com/2019/02/14/us/megalodon-extinct-earlier-scli-intl/index.html Fox News: https://www.foxnews.com/science/megalodon-shocker-huge-killer-shark-may-have-been-wiped-out-by-great-whites Forbes: https://www.forbes.com/sites/melissacristinamarquez/2019/02/14/great-white-sharks-may-be-the-reason-why-giant-megalodon-shark-is-extinct/#6a06986a6486 Daily Mail: https://www.dailymail.co.uk/sciencetech/article-6700495/Giant-50-foot-long-predatory-shark-went-extinct-one-million-years-earlier-previously-thought.html- 18 replies
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Acquired 5/14/2019 Image © David Kn.
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Hello everyone, If you saw my most recent trip report, you know that I just found my first meg tooth! However, I'm not entirely sure whether the tooth is from Carcharocles megalodon or Carcharocles chubutensis. The tooth was found at Bayfront Park/Brownies Beach, which is the northernmost part of the Calvert Cliffs. The sediments exposed in the cliffs here are from the Calvert Formation, roughly 18-22 million years old. This would be right around the time when the great Megalodon first emerged. I remember reading that the majority of megateeth found at Brownies are chubs, but that megs have also been found there. What I'd like to know is which one my tooth is: Meg or Chub? It looks to me like if the tooth were complete, it would have the defining residual cusps of chubutensis, but unfortunately the blade is broken on both sides right by the root. The bourlette is missing, but that is a characteristic of every shark in the mega lineage so that doesn't really matter. The tooth is approximately 1 3/4 inches, and not quite as thick as I would've expected. As you can see on my trip report and Hop 5 post, my current ID for this tooth is C. chubutensis, but that is subject to change should someone with better knowledge on megatooth identification give their opinion. One last possibility is that it may be a transitional meg, meaning the shark was a blurred line between megalodon and chubutensis. Any input is appreciated. Thanks!
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Carcharocles megalodon (Joe Cōcke collection)
Macrophyseter posted a gallery image in Member Collections
From the album: Elasmobranchs
I do not own this rare tooth. It is from the collection of paleontologist Joe Cōcke, which he found locally and gladly allowed me to photograph.-
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