I don’t know what "logic" the author of the latest "study" was guided by, but tooth enamel will not thin just by being exposed to air. Crocodile teeth are in constant contact with water. Not only that - with river water, full of suspension of the smallest soil particles, which are precisely what have an abrasive effect and lead to enamel corrosion. In fact, it is crocodiles, for whom lips would be actually useful, such as for sea snakes, dolphins or other aquatic/semi-aquatic tetrapods. But they don't have them. Why? Obviously, the basal ancestors of archosaurs lost their lips at a certain stage of their evolution, and it is not possible to “retcon” the process and return reduced morphological features. That is why the birds never grew their arms and tails back, even when switching to a terrestrial way of life.
All this nonsense about “lost lips due to the transition to an aquatic lifestyle” is complete bullshit, purely far-fetched in the name of personal motives and a modern agenda.
The skull of a crocodile is pretty much shrinkwraped because of its powerful bite force and hunting methhods. You would have to find a cresture that hunts like them and has exposed terth too. Even fish have lips but some fish have exposed teeth too.
Crocodiles lost the skin in their heads because of their bite force. The guy who came up with the moisture in teeth argument is sweating in a corner waiting to be debunked.
If t Rex had an equally strong bite force for their size it's also arguable that they would have lose their lips for the se reason crocodiles did.
>with river water, full of suspension of the smallest soil particles, which are precisely what have an abrasive effect and lead to enamel corrosion
Probably the funniest thing I read all day
Dinosaurs certainly didn't have lips
just use the phylogenetic bracketing. Birds don't have lips. Crocodiles don't have lips. Dinosaurs didn't have lips.
>using phylogenetic bracketing, manatees don’t have trunks and hyraxes don’t have trunks. Therefore elephants do not have trunks
phylogenetic bracketing also would imply that t.rex was feathered when everyone knows it's not the case
How many threads are you up to now?
What was your problem?
If the teeth don’t show your gender dysphoria grows?
Fuck off and transition already lady. You ARE a woman. You were never a man. Happy? Go away.
This is my only thread. You're just an obsessed gay.
Yes, it’s totally just a coincidence there’s another 12 or so shit tier dino threads up right now
Could you link this study that you are speaking of or is it just a way to start rambling?
Thickened tooth enamel and faster tooth replacement is an adaptation to make up for the loss of lips. The lips were lost because crocodilians adapted their facial mosaic integument in order to gain pressure sensors at their gum line to allow them to hunt fish in murky 0 visibility water.
You’re getting cause and effect backwards. And you’re right that it’s basically impossible to re-evolve oral labia after losing them, which is why the tooth batteries of Ceratopsian dinosaurs helps prove that archosaurs conformed to the basal tetrapod condition of lipped mouths. Basal crocodiliforms (cusorial insectivores) were probably lipped as well.
>tooth batteries of Ceratopsian dinosaurs helps prove that archosaurs conformed to the basal tetrapod condition of lipped mouths
Again, any evidence for this other than your HRT badtrip?
Lips look dumb. Real animals don't look dumb. Dinosaurs were real animals.
>Thickened tooth enamel
Crocodiles actually have relatively thin enamel.
>The lips were lost because crocodilians adapted their facial mosaic integument in order to gain pressure sensors at their gum line
Caecilians also have this but their teeth aren't exposed.
>And you’re right that it’s basically impossible to re-evolve oral labia after losing them
He's actually wrong. Softshell turtles developed analogous labia structures that cover most of the beak.
A possibility as to why crocodiles look like that may be that they all evolved from a "snaggletoothed" gharial-like ancestor. From what I am aware of, animals with that kind of interlocking needle type dentition are all lipless with exposed teeth.
You didn’t read the paper. The enamel on a crocodile tooth starts very thick (compared to other reptiles) and wears down over the life of a tooth. The enamel on a theropod tooth is comparably thinner, and the lifetime of the tooth is longer.
>The enamel on a crocodile tooth starts very thick (compared to other reptiles)
is that what they said?
post a quote, I bet you just can't read
can someone please fucking behead the paleoschizo already?
>can someone please fucking behead the paleoschizo already?
he is legion
the demon cast into the swine
>it is not possible to “retcon” the process and return reduced morphological features
sure it is
>But they don't have them. Why?
because they constantly replace their teeth
So as dinos did.
And as Komodo dragons do
No, over 4 times faster than a Theropod.