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About Deviant JacobMale/United Kingdom Group :iconhypotheticalbiology: HypotheticalBiology
 
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Newest Deviations

Tyrannosaurus rex :iconjurassicjacob:JurassicJacob 23 9 Spinosaurus :iconjurassicjacob:JurassicJacob 21 7 Allosaurus fragilis :iconjurassicjacob:JurassicJacob 31 24 Voraxavid :iconjurassicjacob:JurassicJacob 20 0 Tetrels at Night :iconjurassicjacob:JurassicJacob 11 0 Filtermew :iconjurassicjacob:JurassicJacob 15 0 Skyjaeger :iconjurassicjacob:JurassicJacob 16 0 Majungasaurus, King of Madagascar :iconjurassicjacob:JurassicJacob 25 4 Pinacosaurus and his tongue - read on . . . :iconjurassicjacob:JurassicJacob 35 7 Spinosaurus WIP :iconjurassicjacob:JurassicJacob 10 0 Ceratosaurus alternative :iconjurassicjacob:JurassicJacob 27 0 Ammit, Devourer of the Dead, Eater of Hearts :iconjurassicjacob:JurassicJacob 20 4 House Pig :iconjurassicjacob:JurassicJacob 14 4 Pygmy Unicorn :iconjurassicjacob:JurassicJacob 15 0 Scylla :iconjurassicjacob:JurassicJacob 16 7 Europan life :iconjurassicjacob:JurassicJacob 13 5

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Sapient Corvid :iconsalpfish1:salpfish1 15 15 Nemertes :icontrilobitecannibal:TrilobiteCannibal 11 9 Arkerebos Breeds :iconscarlet-harlequin-n:Scarlet-Harlequin-N 15 2 Flying jaguar :icontrilobitecannibal:TrilobiteCannibal 15 17 Akna :iconart5ec:ART5EC 17 1 Yay! :iconthedubstepaddict:TheDubstepAddict 10 17 Red squirrel drey :iconrenum63:Renum63 39 11 Dream Nighthawk Dragon :iconkingovrats:KingOvRats 74 10 The croc hunter :iconxiphactinus:Xiphactinus 91 10 Dromaeosaur of prince creek :iconpaleop:Paleop 113 11 South Island Birds :iconpaleop:Paleop 102 40 Predator and Prey :iconpaleop:Paleop 131 53 Not so little eagle :iconpaleop:Paleop 114 22 Antique Rhine :iconpaleop:Paleop 137 40 memeus :iconpaleop:Paleop 100 22 It's a bird! its a plagne! No! it's Supersaurus! :iconpaleop:Paleop 118 33

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Tyrannosaurus rex
My first reconstruction of Tyrannosaurus rex, and obviously pretty speculative. First of all, I've added more soft tissue around his snout and neck. If you look closely you can just about make out the line of the skull at the top of his snout. I also gave him quite extensive lips, which are endowed with whiskers. Yes, dino whiskers! These modified feathers are connected to nerve endings, making them highly sensitive. I think that sensory bristles such as these would have been quite common amongst small non-avian dinosaurs, and lives on today in the form of rictal bristles around bird beaks. However, amongst large theropods they may not have been as common, although I have speculated on Spinosaurus having sensory bristles adapted to use underwater. Other than that, he's mostly featherless, apart from some sparse bristles on his face and neck. This is because I'm not neccesarily for a full covering of feathers on all theropods. I think that amongst theropods plumage in SOME form would have been common, but I have no doubt that it would have varied a lot. Some may have been naked save for some whiskers, but many were probably covered in a thick layer of plumage. That's why I reconstructed T. rex as mostly featherless in this case, not neccesarily because I have some theory or argument against it, just to show that we don't neccasarily have to cover all theropods in feathers. Variation would probably have been present, and as paleoartists, we have the great and fun freedom of experimenting with that.
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Spinosaurus
I know, I know, this is really bad, but this is my first attempt at Spinosaurus. I will probably do a better one some time. Yes, he's pretty fat, and I also gave him some soft tissue connecting the neck to the sail.
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Allosaurus fragilis
Skeletal reconstruction by Scott Hartman used as a reference. I gave A. fragilis some lips, a slight dewlap, some kind of soft tissue where its jaws meet, and some soft tissue extension of its crest. I'm not entirely pleased with this one, I was kind of playing around with soft tissue, looking back on it I wish that I had given it more on its crest. May redo it one day. I also added some simple integument on its head and neck.
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Voraxavid
Yet another species for my future evolution project.

While the skyjaegers became aerial predators, some seabirds became largely terrestrial predators. These were the voraxavids. They are descendants of giant petrels, which became more dependant on scavenging, but eventually broadened their diet to include more live prey, a change spurred by the large amount of new prey items emerging in Antarctica. They have well-developed wings, which are used in balance and for clubbing opponents in comabt, and they are still able to fly. Their main prey are tetrels, which they mostly hunt at night. Their well-developed eyesight and sense of smell allows them to pinpoint the location of their prey, before chasing it down, as tetrels are normally not very fast. They will also take their prey while it is inside its burrow, by putting its head down the tunnel and grasping the tetrel. To help keep hold of its prey and drag it out, voraxavids have sharp, backward-pointing papillae lining their tongue and roof of their mouth, which act like teeth, digging into the flesh and keeping hold of the prey no matter how hard it struggles.
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Tetrels at Night
Another bird for future Antarctica. This one is foraging in the moonlight.

Some dimunitive, largely nocturnal, terrestrial birds found on Polycenic Antarctica are the tetrels, flightless descendants of Procellariiformes, specifically Procellaria. These small birds create burrows beneath the tussock plains, safe (mostly) from predators – sometimes, in colonial species, the tunnel systems can be quite extensive. Their burrowing adaptations are a defence against the avian predators, the voraxavids and the skyjaegers (see below). They can make their nests deep down under the earth, forming their tunnels using their clawed feet, compact body, and a flattened plate over the beak, used for pushing through soil. Tetrels are mostly nocturnal, emerging at night and using sensitive rictal bristles to forage for terrestrial invertebrates to eat.
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I have been encouraging fellow paleoartists to create pieces of art inspired by my posts, so that they can be featured on my blog Mesozoic Musings. The response to my Pinacosaurus post has been amazing, so here's all of the posts so far on other people's art and my original idea.

Pinacosaurus: Long-tongued, Armoured Beast of the Cretaceous (original post): mesozoic-musings.blogspot.co.u…

Pinacosaurus: the Sequel: mesozoic-musings.blogspot.co.u…

Pinacosaurus Strikes Again: mesozoic-musings.blogspot.co.u…

Pinacosaurus the Fourth: mesozoic-musings.blogspot.co.u…

Thanks everybody who contributed, and for anybody else, the offer still stands!

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JurassicJacob's Profile Picture
JurassicJacob
Jacob
United Kingdom
I am a 14 year old wildlife and speculative evolution enthusiast. I love anything to do with the natural world, and I am also interested in mythology. I may upload dragons, real animals, my speculative creations, and more.
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:icondesorages:
DesOrages Featured By Owner Apr 3, 2017  Hobbyist Traditional Artist
Thanks for the fave!
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:iconjurassicjacob:
JurassicJacob Featured By Owner Apr 3, 2017
No problem!
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:icondesorages:
DesOrages Featured By Owner Apr 3, 2017  Hobbyist Traditional Artist
:D
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:iconhananas59:
hananas59 Featured By Owner Mar 11, 2017  Hobbyist Traditional Artist
Thanks for the watch :D
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:iconjurassicjacob:
JurassicJacob Featured By Owner Mar 12, 2017
No problem!
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:iconthedubstepaddict:
TheDubstepAddict Featured By Owner Mar 7, 2017  Hobbyist Traditional Artist
Thx for the watch my friend
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:iconjurassicjacob:
JurassicJacob Featured By Owner Mar 13, 2017
No problem!
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:iconthedubstepaddict:
TheDubstepAddict Featured By Owner Mar 13, 2017  Hobbyist Traditional Artist
Yay
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:iconthemaukerko:
TheMaukerko Featured By Owner Feb 24, 2017  Hobbyist Traditional Artist
Thanks for the watch! :D
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:iconjurassicjacob:
JurassicJacob Featured By Owner Feb 24, 2017
No problem!
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