Last Of The Buzzsaw Sharks

Last Of The Buzzsaw Sharks | Fadenia

Рет қаралды 11,291

7 ай бұрын

You may be somewhat familiar with the whorl toothed sharks of the carboniferous thanks to its most famous member, Helicoprion. What you may not know, is that the group is extremely diverse and long lived, only dying out in the early Triassic. One of these buzzsaw sharks didn’t have a buzzsaw at all - in it’s place was a V-shaped pavement of bumpy overlapping teeth between a beaked mouth but that is what made it survive the Permian mass extinction, meet Fadenia!
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RESEARCH
Branson, C.C. 1934 report on Eigil Nielsen’s 1932 paper (Permo-carboniferous Fishes from East Greenland. By EIGIL NIELSEN. Copenhagen: C. A. Reitzels Forlag, Meddelelser om Gr nland, Vol. LXXXVI, No. 3 (1932). Pp. 63; pls. i6. Kr. 4.00)
Bendix-Almgreen, S.E. (1967). On the fin structure of the Upper Permian edestids from East Greenland. Meddelelser fra Dansk Geologisk Forening, 17(1), 147-149.
Bendix-Almgreen, S.E. (1975) The paired fins and shoulder girdle in Cladoselache, their morphology and phyletic significance. In LEHMAN, J. P.(ed.). Problèmes actuels de paléontologie: evolution des vertébrés. Colloques internationaux du Centre National de la Recherche Scientifique, Paris, 218: 111-123
Mutter, R.J. & Neuman, A.G. (2008) New eugeneodontid sharks from the Lower Triassic Sulphur Mountain Formation of Western Canada. Geological Society, London, Special Publications, 295, 9-41 DOI: 10.1144/SP295.3
Nielsen, E. (1932) Permo-Carboniferous Fishes from East Greenland. Meddelelser om Grønland, 86(3), 1-63
Permo-carboniferous Fishes from East Greenland, Branson, C. C., Journal of Geology, v. 42, 1934, 772-773. Earth Science. ui.adsabs.harvard.edu/abs/193.... DOI: 10.1086/624243
Schultze, H.-P. & Stewart, J.D. & Neuner, A.M. & Coldiron, R.W. (1982) Type and figured specimens of fossil vertebrates in the collection of the University of Kansas Museum of Natural History. Part I. Fossil Fishes. University of Kansas, Museum of Natural History, Miscellaneous Publication, 73: 1-53
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Пікірлер: 47

@chadgorosaurus4898 7 ай бұрын

They had to get rid of their most iconic feature to survive the Permian Extinction

@Titus-as-the-Roman 7 ай бұрын

The Triassic was just simply Weird, evolution was going who-knows-where in every direction. Looking at these things from all metaphoric angles I'm willing to bet they spent much of their time swimming around Biting Ammonite and Nautiloid shells, puncturing the air chambers, coming back around on the floor to suck it out or chew up the Shell

@UnofficialJurassicWorldYT 7 ай бұрын

A new jurassic spinosaurid has been discovered in jaisalmer formation of India

@Spinofaarus_boi 7 ай бұрын

More spinosaurid lore

@UnofficialJurassicWorldYT 7 ай бұрын

@@Spinofaarus_boi yea 😅

@joshuaball5916 7 ай бұрын

Was it given a name?

@UnofficialJurassicWorldYT 7 ай бұрын

@@joshuaball5916 No not yet it's still called spinosauridae indet

@robbiemcgrath7865 7 ай бұрын

NOOOOO NO NO NO NOT MORE FUCKING SPINO NEWS I CANT TAKE THIS SHIT ANYMORE

@nazzkid23 7 ай бұрын

That's so cool that they persisted so long! 🦈

@MrEmilable 7 ай бұрын

Awesome video, i hope you´ll cover more Eugeneodontids.

@trilobite3120 7 ай бұрын

He's covered Ornithoprion before

@Morrison-saber-tooth 7 ай бұрын

The real helicoprion's granddaughter

@Kargoneth 7 ай бұрын

Appreciate the videos and pronunciation, as always, sir. Thanks!

@Soggy_D0nuts 7 ай бұрын

Please do a vid on Vetulicolians! They are so strange and interesting!

@matthewbromm7552 7 ай бұрын

amazing and in-depth!

@NautilusEnjoyer5000 7 ай бұрын

Is this a reupload because i remembered this was posted like during somewhere 2019-2017

@tobiasedwards2643 7 ай бұрын

Wait didn’t you make a video about this animal for Shark Week why did you re-upload this

@trilobite3120 7 ай бұрын

What do you think of David Peters criticisms of the 2023 dunk paper? I have some counterarguments for it but if I'm being honest it's probably the best criticism of the paper I've seen.

@EDGEscience 7 ай бұрын

I can't trust anything Peters says for any reason. Even if he ended up being right, somehow, he's so far gone that I would literally rather wait for anyone else to say the same right thing and then take their word for it.

@trilobite3120 7 ай бұрын

@@EDGEscience I see. That's kind of fair. His criticism was that Amazichthys didn't line up with the whole "bottom thoracic plate extending to the tail base thing". Since Amazichthys has derived away from the common ancestor of Pachyosteomorphs a fair amount (being a Selenosteid Aspinothoracid), and thus diverged away from Dunkleosteus and it's kin we don't know if the bottom thoracic plate not lining up with the tail base is a feature specific to Selenosteids or Aspinothoracids, or if it is also shared by Dunkleosteids, so more basal species may be more useful in this aspect.

@EDGEscience 7 ай бұрын

I would not take a single word he has ever said to mean anything. He literally thinks Andrewsarchus was a tenrec. The dude has literally lost it. All his criticisms are mute tbh.

@reeyees50 7 ай бұрын

Yo edge why you hate peters, whatd the story there?

@reeyees50 7 ай бұрын

My bad, peters is the guy behind pterosaur heresies. The guy is mega crazy and has no qualification in the field or any

@joshuamueller3206 7 ай бұрын

That documentary you showed a clip of at 21:24 with the shark in the swamp, what documentary was that? I vaguely remember that from when I was a kid, but never got to see the whole thing.

@dynojackal1911 6 ай бұрын

that's from River Monsters. It's the episode about various extinct types of fish which prowled ancient waters.

@oneshotme 7 ай бұрын

I enjoyed your video and I gave it a Thumbs Up

@reeyees50 7 ай бұрын

Great video as usual

@trilobite3120 7 ай бұрын

2:46 Ironic given Ornithoprion is pretty early if I remember correctly.

@user-pr8gx3vb9h 7 ай бұрын

Another interesting ancestor of modern sharks.

@sassa82 7 ай бұрын

one of the most strange mouthparts

@donohirst 7 ай бұрын

Did anyone notice that Vladimir Putin had a real shock of curly hair in his previous life as a danish paleontologist? (Sorry for the silly comment, i love sharks and their early relations, pretty damn successful lineage, shown to be more so here. Just a shame we're far more difficult to survive than the great dying!)

@theangrysuchomimus5163 7 ай бұрын

The Great Dying is still the worst extinction event. Humans have killed less animal groups than it.