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  @michaelreed47445 күн бұрын

  Hello. Are some of the fossils and skeletons copies from other museums?

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  @elasmocast4 күн бұрын

  Hello, I believe you are correct! There are some casts that were at the show and featured in this video

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  @x1mpressed21 күн бұрын

  They aren't sharks tho Modern sharks appear around the Jurassic also known as selachamorphs Which I believed some even co existed with hybodonts and ctenacanths Some are holocephalans Correct me if I'm wrong tho

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  @elasmocast20 күн бұрын

  You are correct in that the modern sharks we know today (the Galean and Squalean Sharks) aren’t known earlier than the Early Jurassic, though true selachians date back to the Early Permian with Synechodus antiquus. You are also right that true sharks (selachians) did coexist with hybodonts and ctenacanths. Ctenacanths in the Mesozoic are questionable (in my opinion the Cretaceous “ctenacanths” are likely selachians convergently evolving similar teeth), though they certainly coexisted at the same time as the earliest Synechodus. On this list, some are more distant relatives to sharks, falling under Euchondrocephali, whereas others are closer related to sharks, also belonging within Elasmobranchii. I hope this helps!

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  @x1mpressed12 күн бұрын

  ​@@elasmocast ayo didn't expect a reply. love your content and I also love learning about Chondrichthyans

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  @elasmocast10 күн бұрын

  I’m glad you enjoy the content! Are there any chondrichthyan topics you’d like to see a video covering?

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  @x1mpressed7 күн бұрын

  ​@@elasmocast cladoselache and relatives, early chondrichthyan evolution holocephalans and elasmobranchs split or maybe early lamniform evolution IDK just some topics I'd like to see

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  @elasmocast7 күн бұрын

  I think you’ll enjoy these videos! A Review of Chondrichthyan Evolution by Geologic Time Periods kzread.info/dash/bejne/mnl9zKSKisjXdrQ.html This one goes over early chondrichthyan evolution, up until modern day, and includes early holocephalans, Cladoselache, and many more! Elasmocast Episode #3: Killer Ctenacanths w/ JP Hodnett kzread.info/dash/bejne/dnaatKRtfb3RZ8Y.html This podcast episode delves into another cladodont order, the Ctenacanthiformes, and also discusses debates as to phylogeny of Paleozoic chondricthyan groups. Funnily enough, I actually have a script completed for Early lamniform evolution, just never got around to recording it. I’ll have to put that one on que!

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  @powercage21 күн бұрын

  Bro, your hair is crazy.

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  @elasmocast21 күн бұрын

  Haha perhaps a haircut would be welcomed in the near future

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  @dansilberstein32621 күн бұрын

  “Wow look at this weird tooth I found wonder what it’s from” *fabricates an entire creature and backstory based on nothing but a tooth* “It’s fuckin’ SCIENCE, bro.”

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  @elasmocast21 күн бұрын

  Many of these and other extinct sharks and relatives are known from articulated body fossils, which is where many of these renderings are based off of. Teeth are by far the most common fossils found from these animals (their cartilaginous skeletons don’t easily preserve, whereas their teeth do and are shed frequently), but that does not mean more complete remains of either that exact species, or close relatives, weren’t also discovered, which can allow artists to reconstruct what these animals may have looked like.

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  @dansilberstein32621 күн бұрын

  @@elasmocast the problem is the skeleton doesn’t show the whole picture. You could ask 2 artists to recreate it and get vastly different results. My issue is with science being unscientific. When they say it is some way, or treat something as a fact when at best, it’s their best educated guess. Just like dinosaurs, were they lizards or birds? They used to be depicted one way, and that’s “how it is” and now it’s different, yet the fossils never changed. Science is about observation and experiments. Don’t sell me your imagination.

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  @elasmocast21 күн бұрын

  Yes you are right, skeletons don’t show everything, and I agree, I also dislike the ‘unscientific’ recreations that are sometimes created without much factual backing. Some dinosaurs, for example, we have a fairly solid idea of what they would’ve looked like when they were alive; when an entire animal is constructed off of a partial fossilized femur I get very skeptical lol. I think that some older models that, while now known to not be accurate, aren’t necessarily unscientific. A lot of times reconstructions are created off of the available scientific information observed by the time, and become outdated not because of them making stuff up out of thin air, but because new discoveries wind up shedding light on new aspects previously unthought of. In my opinion, in good paleo art there’s a combination of as much scientific accuracy as possible blended with realistic creativity.

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  @chasee497320 күн бұрын

  @@dansilberstein326the irony is that almost every animal (excluding ONLY Petalodus) this video highlights actually has fully articulated individuals represented in the taxon’s fossil record. Your little spittle fit about scientific accuracy is ironic and is typical for someone who DOES NOT know what they’re talking about. Keep your opinions to yourself, nobody asked for them.

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  @nevergonnagiveyouup475322 күн бұрын

  Post Malone

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  @elasmocast21 күн бұрын

  Haha I can see it!

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  @cpuukАй бұрын

  Henry Cavill sure knows a lot about sharks 🙂

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  @elasmocastАй бұрын

  Haha I get that all the time!

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  @brendadedondeeresrodriguez4978Ай бұрын

  Hola a mi encantan los fosiles está muy padre ese lugar en dónde es?

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  @elasmocastАй бұрын

  It’s several different venues laid out all throughout the city of Tucson, Arizona. A great place to go for any fossil enthusiast!

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  @oliviafiregarden20072 ай бұрын

  You have such a vast knowledge about sharks it’s insane!

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  @elasmocast2 ай бұрын

  Thank you so much, I appreciate the kind words!

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  @roberttresemer82262 ай бұрын

  Very cool piece. Great find. Worth every penny you paid for it.

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  @elasmocast2 ай бұрын

  Thank you, we agree!

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  @smokeeater83873 ай бұрын

  Some people just have a knack for spotting things. Those are so small I wouldn’t have even thought to check it out. I have a hard enough time trying to find arrowheads 😂👍🇺🇸

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  @elasmocast3 ай бұрын

  Very true. It took me years to find my first tooth here in Arizona! I would love to eventually hunt for arrowheads, if only the law’s weren’t so stringent on them in this state.

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  @smokeeater83873 ай бұрын

  @@elasmocast I’m in Missouri but I look mostly on private land. If it’s on private it’s pretty much fair game. Most rivers and creeks have arrowheads in them here and it is usually within the law if they are on the gravel bars. The fossils here at least where I look are fairly hard for me to find. I’m sure they are there but other states are better as far as I know. Southern Missouri was a marsh I think millions of years ago but I’m in mid Missouri above the water line I think

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  @elasmocast3 ай бұрын

  Private land is the safest way to go for sure. If I recall correctly most of the chondrichthyan teeth I’ve seen from Missouri are from the Paleozoic, and finding those is a very different experience than how, for example, many collectors from the Southeast collect theirs.

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  @chrisserfass86353 ай бұрын

  I own a few Megalodon teeth. The biggest one that I have is 5.5 inches long. The two smaller ones are about 3.5 inches long. This place looks incredible with all of the fossilized things of the past.

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  @elasmocast3 ай бұрын

  That largest one is a very respectable size for a megalodon tooth! This is definitely a place I’d recommend fossil and mineral lovers to attend at least once.

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  @battlechampion474 ай бұрын

  Hi, good video! I had a question regarding one of the fossils seen in de video. at 02:41 you can see many associated (?) teeth in different patches of matrix (one with vertebrae). At first I thought they could be from Cretoxyrhina but the lateral cusplets make me reconsider this idea (I'm aware that older species of Cretoxyrhina have lateral cusplets, but I can't be sure as some of the teeth have a different morphologies than those I could see in Cretoxyrhina). You recall which species name it was given in the expo?

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  @elasmocast4 ай бұрын

  Thank you! Those teeth in question are of Otodus obliquus and were recovered in the phosphate mines around Khouribga, Morocco. Hope this helps!

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  @brendadedondeeresrodriguez4978Ай бұрын

  Hola que bello lugar a mi me encantan los fósiles en que parte se encuentra

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  @thomasburley34 ай бұрын

  It kinda looks like it is in a small patch of matrix on the Banana? 😂

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  @elasmocast4 ай бұрын

  There’s definitely some matrix on this specimen. At first I thought it was situated on top of the vertebrae, but upon closer inspection it looks as though the matrix is embedded within the vertebrae’s arch!

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  @Cyclopeantreegiant5 ай бұрын

  Sfark

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  @Rex_Thegentleman5 ай бұрын

  🦞

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  @elasmocast5 ай бұрын

  @@Rex_Thegentleman 🦑

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  @thechumpsbeendumped.77975 ай бұрын

  I wonder why they call it the Spear toot… Oh, I see why.

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  @elasmocast5 ай бұрын

  Haha it’s a very well-named shark!

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  @user-ti9wm4tz3i5 ай бұрын

  Cop wy is sas 😢😢😢😢😢😢😢😢😢😢😢

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  @QuestForDetails5 ай бұрын

  fun vid ! just found ya and subscribed !

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  @elasmocast5 ай бұрын

  Glad you enjoyed the video, and thank you for the subscription!

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  @Ontario_Rockhound5 ай бұрын

  Beginners luck eh, awesome finds!

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  @elasmocast5 ай бұрын

  Haha right! And thank you!

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  @jimkirkland58385 ай бұрын

  Need to work on your pronunciation... I have been there....

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  @elasmocast5 ай бұрын

  Thank you for your constructive feedback!

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  @jimkirkland58385 ай бұрын

  Spent a lot of days checking out the Kohls Ranch site back in the 80s....

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  @elasmocast5 ай бұрын

  It’s a great site!

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  @mimemouse9977 ай бұрын

  Small but savage.

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  @elasmocast7 ай бұрын

  Indeed!

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  @mimemouse9977 ай бұрын

  @@elasmocast Yes!

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  @chrisrego485610 ай бұрын

  Not my Greenland boys Chase! Those parasites are the real winners, they chose a host that apparently never dies lol

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  @elasmocast10 ай бұрын

  Haha good point!

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  @chrisrego485610 ай бұрын

  Y'all dissing my boy Palaeocarcharodon! It was a pioneer! It got broad, serrated teeth before it was cool! It gambled its life savings but lost the bet. Should've waited. Imagine a bizarro world where archeocetes evolved sooner... Palaeocarcharodon was ahead of the curve! They were Streets ahead! (Nod to all of "Community" friends)

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  @elasmocast10 ай бұрын

  A gambler that lost is a loser! Haha Palaeocarcharodon did evolve too early for its own good; it’s crazy to think about all of the evolutionary possibilities if events had unraveled differently.

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  @thomasburley310 ай бұрын

  It's an interesting point to touch on. Is a highly specialised Shark a winner because it's perfected it's niche, or is it a loser because it's not a generalist and is extremely sensitive to any change in it's environment.

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  @elasmocast10 ай бұрын

  I think that length of time within a particular niche and success in that niche would constitute whether a shark is a winner or loser. A successful generalist has greater potential for abundance and duration throughout time, making them an evolutionary winner.

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  @mesozoicmarket10 ай бұрын

  Where would Xenacanths go?

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  @elasmocast10 ай бұрын

  Xenacanths became rapidly diverse and were apex predators in certain ecosystems such as freshwater environments, so I would consider them a winner, even though they aren’t very successful after the End-Permian Mass Extinction and become extinct in the Triassic.

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  @lesofprimus110 ай бұрын

  I listened to the whole video and it was extremely interesting... 👍👍

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  @elasmocast10 ай бұрын

  We’re glad you enjoyed it!

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  @catfishcain10 ай бұрын

  You tell'em Ben!

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  @elasmocast10 ай бұрын

  Yessir!

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  @otodus10010 ай бұрын

  I am old school, I prefer it not being added into Otodus. I have Otodus from the east coast of the US, and abroad, it may have been the precursor. To me however it's just a huge leap in evolution to me. I just do not see it.

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  @elasmocast10 ай бұрын

  That’s understandable! It is a huge evolutionary feat going from Otodus obliquus to Megalodon. I am in agreement with you that Otodus megalodon isn’t the best placement for the shark.

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  @user-om5iz8xo8b10 ай бұрын

  Nicely done Ben...those watching will definitely need a good background of biological terms. This will take some time to digest! =)

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  @elasmocast10 ай бұрын

  Thank you, and yes, having prior understanding to biological terminology would make it a much easier watch!

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  @lesofprimus110 ай бұрын

  Very excellent explanation and detailed breakdown of the differentiation between the species. I'll have to chew on it for a bit before committing to Carcharocles.

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  @elasmocast10 ай бұрын

  I’m glad you found the video informative!

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  @mesozoicmarket10 ай бұрын

  While it does end up being paraphyletic, I do use Otodus over Carcharocles simply because I misspell the latter all the time, and Otodus is a lot smoother and simple to say.

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  @elasmocast10 ай бұрын

  That’s fair enough!

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  @TheBraceletBatch10 ай бұрын

  𝚒𝚍𝚔

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  @Reece98310 ай бұрын

  dont cry bro its okay

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  @elasmocast10 ай бұрын

  I’m trying my best:(

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  @Reece98310 ай бұрын

  @@elasmocast your vids are good and im here for you but you look so sad

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  @elasmocast10 ай бұрын

  @@Reece983 I appreciate that and thank you for your concern!

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  @catfishcain11 ай бұрын

  Another great video, learned something new.

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  @elasmocast11 ай бұрын

  Thank you, and glad you found it informative!

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  @howardkerr535111 ай бұрын

  Nice work Ben

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  @elasmocast11 ай бұрын

  Thank you, Howard!

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  @willgoacher9122 Жыл бұрын

  Great video Ben

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  @elasmocast Жыл бұрын

  Thank you, Will!

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  @catfishcain Жыл бұрын

  As always spectacular video. Keep up the great work

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  @elasmocast Жыл бұрын

  Thank you, it means a lot!

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  @njfossils Жыл бұрын

  This was excellent, well done!

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  @elasmocast Жыл бұрын

  Thank you, very much appreciated!

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  @Dman9fp Жыл бұрын

  Also people tend to think of Megalodon's reign as the "Golden age of sharks". But, Sharks were likely most Abundant & At their Peak Diversity in.... *Drumroll*.... all the way back in the Carboniferous. That's right, no modern sharks yet, but that's when shark-like cartilaginous fish dominated the most they ever would (as far as we can tell) Edit: & to answer "What's my fav time period"... I mean I was Mega obsessed with the Permian in late 2013- some time in2014 (before really getting into FL fossil hunting and starting to be mega obsessed with sharks around 2016 but I found some Very nice shark teeth in 2014, the connections/ first glimmers in the light bulb started there). To each their own, definitely are loads of thought-provoking issues and trends, etc. mysteries and things to discover about the deep past. But... hmm idk how to broach this without being too philosophical/ spiritual. If you start to say "Dang those chirping birds out there, they didn't exist in the Permian!" then perhaps you're missing the point of being born and appreciating our (wierd/ odd/ unsustainable, etc) place in space and time at Present... but then at least if you don't care much about current animals, you Won't Lose Sanity & Much peace of mind over egregious anthropogenic man-caused trends xD.... trade-offs and balances. [I have lived and struggled thru many a mindset/ place in life yes XD]

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  @elasmocast Жыл бұрын

  It is really interesting how diverse Chondrichthyans became in the Late Paleozoic, and how events like the end-Permian extinction event drastically bottlenecked diversity. We do have great species-diversity today, but broader-group level diversity is a mere fraction of what it was before in the Late Paleozoic.

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  @Dman9fp Жыл бұрын

  Solid video. Of course livin' in FL & digging up/ finding their teeth here (west central & south central fl, wait also a bit of north FL), I have the most experience with cenozoic sharks. But once upon a time several years ago, I did buy (off an auction site) a somewhat big bag of North texas Permian rocks chock full of small to "large" Orthacanthus (xenacanthiform swamp "shark") fossil teeth. Great times, wait actually I've got a Waurika Oklahoma small box of permian matrix somewhere too... saved that for a rainy day or someone else, I keep forgetting I own it lol... also man oh boy do Edestus teeth in jaw "Pop" out better in person (as with several other great fossils, like an american lion skull replica, dugong skull replica, Nice Complete Angustidens shark teeth, etc.). Of course when I saw it at a central FL fossil buying/ selling convention, someone beside me said "Genius idea putting that on the top shelf" lmao. Forget how much they were asking, but it was probably more than 1 or 2 grand ($1000-$2000+) if I recall correctly...

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  @elasmocast Жыл бұрын

  A lot of people tend to have most experience with teeth from the Late Cretaceous onwards. With that said, the bizarre Chondrichthyans alive before then are, in my opinion, some of the most interesting taxa out there. Xenacanth teeth and Edestus tooth whorls are prime examples of that. It’s really fascinating thinking about the incredible diversity in Chondrichthyan history!

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  @howardkerr5351 Жыл бұрын

  Hi Ben, great video, I love this content it would be interesting to pick a given geologic marine formation and talk about the shark species found in it as well as the relationships of the existing fauna- HDK

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  @elasmocast Жыл бұрын

  Hello Howard, that’s a great idea! I can think of lots of formations off the top of my head that would be great candidates for something like that.

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  @catfishcain Жыл бұрын

  Awesome video and big congrats to some of those spectacular finds. You definitely need to acquire a couple 5 gallon bucket top sized shifters and collect that smaller material along the surface to search through back at home.

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  @elasmocast Жыл бұрын

  Thank you! That’s a great idea; I did take with me a sandwich bag full of loose sediment to look through at home, but ideally taking more would be better so I don’t have to spend the time and money traveling back and forth to the site.

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  @mesozoicmarket Жыл бұрын

  Nice. I love the diversity and morphologies of Paleozoic chondrichthyans.

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  @elasmocast Жыл бұрын

  The Paleozoic had some of the craziest Chondrichthyans of all time, and were far more diverse than what we have today, on a broader group-level basis.

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  @darylserafin4339 Жыл бұрын

  I would have been tempted to scoop up some of that dirt to take home for fine sifting.

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  @elasmocast Жыл бұрын

  Oh believe me, I did that!

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  @njfossils Жыл бұрын

  Cool finds man! That denticle is awesome

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  @elasmocast Жыл бұрын

  Thank you! I was not expecting to find one of those, especially in that condition.

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  @Dman9fp Жыл бұрын

  Solid video. Would be neat to see a video on Pathological teeth, some peoples fav tooth in their collection is a very unique patho (not mine Personally, mine is a huge 1.5"+ Hemipristis upper just missing the tip since i dug it up.. but ive heard on socials some ppl Really love patho's

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  @elasmocast Жыл бұрын

  Thank you, and that’s a great idea! Pathological teeth can be incredible in both their oddities and uniqueness!

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  @catfishcain Жыл бұрын

  Bandringa sharks from the Mazon Creek fossil fauna

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  @elasmocast Жыл бұрын

  Those are strange ones!

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  @nicodemous5402 Жыл бұрын

  Awesome video! You should definitely expand and turn this into a Book/Ebook. I wouldn't mind using it as a reference when fossil hunting!

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  @elasmocast Жыл бұрын

  Thank you, and that’s a great idea!

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  @lynnemushock8862 Жыл бұрын

  Great Info!

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  @elasmocast Жыл бұрын

  We’re glad you found this video informative!

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  @Dman9fp Жыл бұрын

  Very neat, didn't know great whites could have cusplets. Altho they arent related at all- reminds me how I've found here in FL hemipristis lowers with some cusplets (I ncluding one small lower that had 4-- 2 on each side). I have a gut feeling they aren't patho, but are most likely broken off somewhere after tumbling in rivers/ creeks usually I still consider my elasmobranch evolution podcast active, and this weekend found an Absolutely incredible fossil fish book from a college library. I did not know the most ancient neoselachians (i.e. Palaeospinax) lived all the way into the early eocene... i might do an episode or something on them. Alas at rhe moment i have more than my hands full with Florida enivonmental activism stuff, you win some/lose some it seems, but still worth it to me. Anyways, great content keep it up 👍

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  @elasmocast Жыл бұрын

  Those Hemipristis sound interesting! Taphonomy can make some teeth difficult to make solid determinations off of. What book did you find? We’re looking forward to you making a video on them!

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  @Dman9fp Жыл бұрын

  @Elasmocast Yeah. they were definite Hemipristis teeth I dug up in mid miocene creek, definitely Hemipristis serra (tho I have a gut feeling it can be hard to know if there were subspecies, based on teeth alone). If only soft tissue could readily preserve lol, lots of taxonomy issues could readily be resolved and new evolutionary insights. But is still amazing what ocassional body impression fossils are out there, for sure The quality book is called "Discovering fossil fishes" by John Maisey. Didnt read all of it, I had plenty of books to look over and find what interested me, but I know for sure I'll find it again sooner or later