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Let’s do it!!!

@@elasmocast I'll bring Pippin and some mead! I tried to track it down years ago, but failed miserably. I may have been traveling in the wrong direction. But i am so down to try again and we can get some footage!

That would be awesome! I haven’t explored that area yet, I’m really curious as to what we can find!

The star of the trip!

Thank you! Hatchi was the real star of course

Michelle did! She really did a fantastic job on it!

I am glad you and Hatchi enjoyed the trip! You did an amazing job editing the video too:)

Thank you!

You are correct!

@ Cool!

Thank you for the kind words, I’m glad the video was informative for you!

Thank you; I appreciate the kind words!

Thank you for the ID help the recommendation, and the subscription. It was awesome meeting you today, as well!

Yes there were a lot of casts on display at the show

Thank you for the suggestion!

I’ve been wanting to check out that place!

That’s a great idea. We have a couple other tier list episodes in the works as well!

We’re currently planning one out with a pretty cool lineup of extinct animals!

@@elasmocast awesome can't wait

Blasphemy

I’m glad you enjoyed this episode!

I'd be down!

You are right, these taxa (especially the "transitional" ones) aren't true species, especially when looking at chronospecies such as the Carcharocles lineage. I would classify the transitional Otodus-Carcharocles lineage teeth as belonging to Carcharocles, as once serrations begin to develop, the Carcharocles chronospecies is established; Otodus obliquus, while being ancestral to this lineage, is less clear whether it split into other "genera", as well (Parotodus, Megalolamna). You are right that evolution is not sharply drawn out; it only looks that way from a bird's eye view. Even intraspecific variation can make labeling fossils a challenge. It does seem often to be the case that evolutionary changes, in a deep time sense, happen relatively rapidly, followed by that trait undergoing relatively long periods of stasis, before significant morphological changes evolve again, as is stated by the concept of punctuated equilibria by Niles Eldredge and Steven Jay Gould.

We appreciate the advice, thank you!

Thanks for getting back to me, I've spent most of my life on and around the Rim. Flagstaff side.theres a place north of Payson with Chrinoid stems and funnel shaped orange fossilized sponges.

Any time! There's tons of cool fossils all over that area, and a lot still to be discovered and described!

It’s funny you mention the Devonian, we actually have a video coming out soon where we were fossil hunting in the Devonian age Martin Limestone! The Devonian in Arizona is seldom researched, yet still has some awesome fossils in it!

You should come on the next SPS trip!

Thank you for the suggestion! When I looked closely at the specimen with a microscope, I found traces of a pair of lateral cusplets, which made me lean towards Scapanorhynchus, rather than Anomotodon. Another possibility I thought of was Eostriatolamia, though found Scapanorhynchus to be the closest match.

Thank you! I’m not sure if there are any career opportunities within SPS itself, though it is beneficial in that you have the opportunity to build connections with people that may help with your future career. It is tied closely with the Arizona Museum of Natural History. I hope this helps!

@@elasmocast yes! This helped a ton, thank you so much! Keep up the good work, love your videos!

Glad to help, and I appreciate the kind words!

He’s great guy! It was a pleasure having him on the podcast.

@@elasmocast indeed I think I found my new favorite channel XD Extinct sharks are my specialty (to the point of my recons being on Wikipedia) so having this channel on my notifs from now on

I’m really glad to hear it! Sharks are the coolest. If you like long-form podcasts like this one I have some more coming out in the near future to look forward to. The next Elasmocast episode will have another prolific extinct shark researcher! Which Wikipedia articles are you on?

@@elasmocast is it tyler greenfield? XD

It is not! I should reach out to him for an episode though

I’m glad you enjoyed it! Being a shark person myself, I found Russell’s information on placoderms super informative as well.

Cunningham (2000) really displays the overwhelming similarities between Carcharias taurus and Striatolamia macrota teeth

Given the multiple unknown variables, that does seem very possible

The Paleozoic is my favorite era!

Thank you for your insight! I had it identified as a denticle based on the foramina present along the sides of the base, with no foramina present on its basal face. Looking at the figure, it does resemble Lagarodus, which can be found in the Naco Formation.

Thank you! I was thrilled to find it

I did as well! It is a great read.

It’s miraculous how well the specimens preserved! I look forward to seeing what other articulated remains from this site get published on in the future.

It’s well worth the read!

I suspect that the “rock” was part of the Late Paleozoic (Permian) age Kaibab Limestone, which can be found in the Flagstaff region!

That is still a really cool find; I hope you do find your Hemipristis tooth some day!

Pelagic Threshers are awesome. Would love to make some thresher content in the future!

Haha that is very much appreciated, thank you for your kind words!

I'm glad to help! It's really unfortunate the lack of scientifically accurate shark-related content produced for mass media these days.

I love sharks, too! And it is crazy thinking about how many areas you'd never think were ever covered by oceans actually were! Truly shows how much the Earth is ever-changing.

They are one of the cutest sharks!!!

I am really glad that you enjoy these videos. I have plans for lots more long and short-form chondrichthyan content, so stay tuned!

I appreciate the insightful feedback and advice! It was a makeshift setup at a place that wasn’t mine, and I don’t have a background with making videos; I will be trying to improve my quality of visuals and overall execution as I get more experience with content creation. While I love the science, I understand that good audio and visuals are necessary to better engage with audiences; thank you for sharing!

In my opinion the possibility of megalodon existing is extremely low as I don’t believe there are sufficient enough whale populations to harbor a megalodon population, paired with megalodon not being a deep sea-suited predator, and a lack of evidence of its existence, considering it would be the most apex predator alive if it were alive today. A lack of evidence can’t be construed as evidence so the possibility of megalodon existing cannot be 0, I just suspect it is very, very low. I hope this helps!

I really appreciate it; the science should come first!

Thank you!

That is true; Palaeocarcharodon, while being a relative to C. megalodon within the same family Otodontidae, is not an ancestor to C. megalodon. Palaeocarcharodon is, in my opinion, either a sister taxa to Otodus, or is possibly evolved from the earlier-splitting otodontid shark Kenolamna (which would require a very long-spanning ghost lineage).

Agreed! Ptychodus was a truly unique genus