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January 26
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:iconiririv:
Entry for the All Yesterdays Contest: [link]

-Yes, I have already made a wacky interpretation of Spinosaurus before [link] but I just kept coming with more! So this contest was a great opportunity to depic this enigmatic animal in a new light.
Traditionally spinosaurus has been depicted as an uber land-crocodile on steroids, but I beg to differ. I have already mentioned how I see a hump in spinosaurus as a much more feasive structure than the sail, more in the style of a bison than a Dimetrodon. I imagine that; feeding on a heavily seasonal diet of fish and carrion, the warm blooded animal might need to storage large ammounts of enegy during dry seasons.
-Further down the list of unlikelyness is the quadrupedal posture. Actually picturing the creature alive makes this much more feasible than it would seem at first thought. Most large theropods have tiny feet in comparison with their giant bodies, let alone the particularly massive Spinosaurus (add the fatty hump and it becomes plain ridiculous). The animal looks completely unbalanced in most modern depictions by standing just on its hind legs, as if would fall flat on its face. The price of having a center of gravity much closer to the nose than the vertical center of balance over the hind legs. Now picture that figure leaning down towards a water mirror to catch fish, and there is no possible way it wouldn't fall nose-first into the water.
Besides granting extra support for its weight, the quadrupedal structure would gran extra maneuverability while moving in shallow water. Spinosaurids are already well known for their well developed fore-arms and provided all the advantages they would provide, its not difficult to imagine the spinosaurs with slighlt longer fore arms, moving and acting like a giant grizzly bear.
-At the bottom of the bucket is the old fashioned trunk as it has been proposed for Diplodocus before. Established as a semi-aquatic animal the trunk might be very convenient. I also noticed how brown bears make use of extremely dexterious upper lips, when trying to catch salmon out of the air. Just thinking about that weird crest in the forehead and the high-up placement of the nostrils... got me wondering.
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:iconwesdaaman:
~Wesdaaman May 5, 2013  Student General Artist
You sure about this?

Besides, all Theropods are known to be bipedal, not quadropedal
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:iconiririv:
No, not sure at all!
I actually find this unlikely myself.
But then, also all theropods were thought to be carivorous and now we have Therizinosauria and the likes.
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:iconwesdaaman:
~Wesdaaman May 7, 2013  Student General Artist
And lots of omnivores too
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:iconjaderavenwing:
Ya know... I like this....
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:icondinodanthetrainman:
very cool concepts:)
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:iconshinyaquablueribbon:
~ShinyAquaBlueRibbon Mar 13, 2013  Student General Artist
Thinking of that as a real animal is very frightening. O___O But it's an amazing reconstruction. XD
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:iconbrokenmachine86:
~BrokenMachine86 Mar 4, 2013  Hobbyist Traditional Artist
Apenas vi esto casi sufro un infarto. Te iba a responder porque pienso que esta es una reconstrucción tan tan hipotética que pasa directamente al plano de la ciencia ficción (sé que la idea del concurso es representar ideas novedosas dentro de parametros de plausibilidad científica, pero algunas, como esta, la exceden).
He leído varios comentarios y debo confesar que sigo sin convencerme por los argumentos de que el Spinosaururs pudiera llegar a tener trompa (la veo extremadamente improblable y totalmente innecesaria, sin ir más lejos existen miles de animales que no las necesitan para capturar peces sin problemas, y veo al Spinosaurus más como una garza gigante que como un oso).
En cuanto al argumento de la joroba, hipótesis a la que no adhiero (aunque de todas las que postulaste acá parece la menos descabellada, y me sumo acá a las razones de bLAZZE92), también me parece equivocado hacer analogías con unguladoss como los bisontes, son anatomías totalmente diferentes ya que estos las usan también como anclaje muscular para el cuello y sus enormes cabeza, cosa que no ocurriría en el spinosaurus. Además, como bien decís, una joroba tendría fuertes implicaciones en cuanto al peso, la masa y por lo tanto el centro de gravedad del animal, y la única solución que pareciera solucionarlo sería una postura cuadrupeda, pero, como señaló bLAZZE92, no hay rastros de tal en el Spinosaurus.
Yo más bien pienso que los que pudieron llegar a tener jorobas de grasa son otros spinosauridos con prolongaciones vertebrales mucho más pequeñas, con lo cual no tendrían problemas de balance. En cambio las del Spinosaurus, al tener un tamaño tan desproporcionado, podrían ser un derivado de esas estructuras para sostener una vela que sirviera a otros propósitos. Después de todo no sería la primera ni la única vez que la evolución tomara una estructura ya existente y la llevara a cumplir otras funciones.

Eso si, el dibujo es artísticamente impecable, marca de la casa.
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:iconiririv:
Jajajaja, a vos te la dejo barata!
xD
No me dejan flashear, che!
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:iconbrokenmachine86:
~BrokenMachine86 Mar 4, 2013  Hobbyist Traditional Artist
XD bueno... gracias? =P
Pero te debo reconocer algo, al menos no le pusiste plumas.
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