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They’re technically not teeth either, they’re sawskate rostral denticles (Onchopristis below) which evolved from dermal denticles (“scales”) and not teeth. https://t.co/M7A0QLEsGT
The little one had to seek to strengthen magic staff!
Molten from the golden teeth of our ancestral king, polished with crystal denticles of the lunar presence and tempered in the tears of Snoot Peak. The staff of the new cycle has finally been refined for its destined purpose!
#SharkScienceSunday
“Armored eyes of the whale shark”
A 2020 study in PLoS ONE has discovered that whale sharks have toothlike scales, called dermal denticles, on their eyeballs.
Figure from article
Full article: https://t.co/G0uppRDvHR
Interested in @cookedillustra's process when creating the graphical abstract to visualize the main points of our recent paper? @IanCookeTapia and I collaborated on a blog post to accompany the graphic: https://t.co/UhyHpRBK2m #scicomm #sharks #denticles #historical #ecology
I’m excited to share our new paper, out now in @PNASNews. We used #fossil #shark scales (denticles) preserved in coral reef sediments to reconstruct the pre-exploitation baseline of a reef shark community in Caribbean Panama. https://t.co/Sbl0sOm0J2 @odealab @mccauley_lab (1/18)
Sharks. Sharks!
Been working on a new #scicomm poster all about #denticles and ecological history.
It involves sharks, y'all!
#scienceart #collaboration
#sharktober Day 25 - Refined Shark
Molten from the golden teeth of our ancestral king, polished with crystal denticles of the lunar presence and tempered in the tears of Snoot Mountain. The staff of the new cycle has finally been refined for its destined purpose!✨
Whale sharks are unique in having denticles right on the surface of their eyeball, but they are different from the denticles on the body surface.
The body of today's holocephalans (chimaeras+) are mostly naked, and those few scales they do have are small denticles like those of sharks. Some of their early relatives however, like this Deltoptychius from the Carboniferous, had pretty substantial head-armour #FossilFriday
Answer: BRAMBLE SHARK!
They can be readily identified by the large, thorn-like dermal denticles scattered over their bodies (some of which may be fused together).
The skin is also covered by a layer of foul-smelling mucus several millimeters thick.
Here's what a snail's denticles look like under a microscope.
I believe that's where the 70s got their inspiration for psychedelic ponchos.
Dental delight. Colourful rendered CTscan of a hatchling catshark lower jaw (dorsal view) showing the glowing teeth (orange), with skin denticles visible on the underside. @alex_thiery @Geknown @rorylcooper @NHM_IAC @SheffieldAPS 🦈 #sharkteeth