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Dragonthunders — Pinnasuchida
Published: 2016-05-10 23:26:29 +0000 UTC; Views: 118912; Favourites: 134; Downloads: 22
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In a random conversation in skype with several friends, there was an interesting topic appeared by a paper published in early February
onlinelibrary.wiley.com/doi/10…
The ‘basal notosuchian/sebecian pattern’ is widespread among basal metasuchians, and establishes for the first time characters maintained later in neosuchians and extant forms. The ‘advanced notosuchian pattern’ includes modifications of the MC possibly related to a terrestrial lifestyle and potentially a structure analogous to the mammalian pinna.
If are wondering what is a pinna, is the visible part of the ear, the Auricle that us and most of the mammal species have. This of course, would seem interesting, what if some crocodylomorphs evolved a pinna like mammals? I have taken as a base the head of a Baurusuchidae, showing the different phases where this structure could evolve.
Starting with a basal form, which has a basic pinna with an almost high sheet, following the second phase, which has developed a more extended structure, to the most advanced form with a huge mammal-like external ear which is able to move.
Of course, I'm taking that line of the abstract too literal, even I don't read the paper, so the idea of mammalian pinna in an archosaur itself is just speculation and not a theory, fact or hypotesis, just funny speculation.
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Comments: 41
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Interesting never knew of it. Although one could argue such a notosuchian could evolve "ears" this doesn't mean they would move like those of mammals. As far as we can tell, they could be immobile as well.
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Yeah, I had been pointed out the detail that the absence of musculature in the ear would make any movement of the pinnae unlikely.
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Its still fairly useful, as long as it can amplify the surrounding sound. This animal you designed, in specific, seems to be able to sense a peripheral sound field.
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I am the first author of that paper you mentioned.
It is good to see people discussing it from the paleoart perspective. Really cool!
The top image is closer to what we can infer at this pont.
Cheers,
Felipe
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Baurusuchids are the epitome of pseudosuchian badassery.
Like, crocodiles decided : hey, let´s make these crocodiles live on land and be fast runners with crushing bites and FOUR saber teeth in each jaw. And why not throw some whiskers and external ears in for good measure, so we can later lay copyright claims on cats.
And then to realize their early close relatives were as large as rhinoceroses.
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Yeah, they were really in a interesting path, even though, a friend noted an interesting aspect in the mechanics of the jaw of the Baurusuchids, that was quite convergent with that of the gorgonopsids, presenting several characteristics similar to these as differentiated teeth, reduced post-canine teeth, and large canines to concentrate the force in a bite.
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I've heard about notosuchians possibly having cheeks and fleshy noses like mammals, but never external ears. This is really interesting. Notosuchians were clearly reptiles trying to be mammals if any of this is true.
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That is a cool concept. When I design alien creatures, I often prefer not to giving them mammal-like ears, but instead ones more like reptiles or fish. But reptiles with big ears is still a cool switch.
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Something like that.
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Not sure I could say that it's cool....or adorable XD
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Y es una idea tan interesante como rarísima. Algo había oído hablar de eso, pero parece que no se ha discutido mucho entre los científicos, igual si es verdad se añadiría a las convergencias de los notosuquios con los mamíferos (tal vez mis sebécidos están demasiado conservadores, jeje). En cualquier caso es divertido especular con ello...
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Exactamente 
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Quien sabe... daría hasta miedo ver uno de esos con picnofibras y orejas...
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Oh si, seria aterrador.
Y mas con esos dientes similares a mamiferos
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Ah, so that's where you'd put the ears. Thanks, DT- I heard about pinnae in land crocs before, but this should help me get the look I want. 
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No problem, you're welcome
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This looks so odd... Would be really interesting if it was true.
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Quite an interesting topic, I think. If such a thing were possible or even a thing I think, as jummbl said below it would be amazing. Good job on the crocodilians too
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Very cool to think about! Feathered basal Archosaurus would be interesting to see, too...
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Asi que es probable que tuviesen orejas? De hehco he oido locuras mas locas como que posiblemente tuviesen filamentos como plumas y que las escamas que vemos en los eosuchidos las hayan perdido estos filamentos por su vida anfibia.
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Probablemente las tuvieron, aunque no como los he hecho, talvez solo la pina haya sido una pequeña elevacion o una estructura similar a la pinna pero que se ubica de manera interna.
No es tanta locura ya que como se ha confirmado que poseen los genes del plumaje en su ADN, probablemente no es tan descabellado como suena.
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Tipo "orejas" como las que tenia Godzilla?
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If this was true, that would be MIND-BLOWING. Paleontology never ceases to amaze.
What do you think of PA? Some people say that can't access it on Wattpad, are you having trouble?
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PA? Sorry for my ignorance, but I don't know what are you talking about.
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My new fan fiction project, PRIMEVAL AMERICA:
hublerdon.deviantart.com/journ…
hublerdon.deviantart.com/art/P…
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Oh well. Then yes i have a problem to see it.
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You should probably either sign into Wattpad, click the "read" button on the page if you can access the site or just try to access it on a different device.
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What an amazing take on a reptile with mammal-like ears!
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