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Description
From that point on, I started posting my drawings on a new IG profile, more focused on my work as an illustrator and that I suggest you follow too www.instagram.com/renatodesenh…

Dinosaurs has always been a passion of mine. But this thread is very important to me not only for that reason. At the end of last year my head asked for rest and care. Everything was starting to weigh and I finally started a treatment with a psychiatrist and psychologist, which I continue to this day.

My idea, as with the drawings of Brazilian folklore, was also to take the opportunity to educate lay people. I am not a scientist and at most amateur paleoartist , but I think that combining art and knowledge is the best thing that an illustrator can do. So I will post the descriptions that I did on IG here too. Any mistake I made please point here, both in the text and in the drawings.

* Yutyrannus huali - One of the most striking discoveries of the last decade, the Yutyrannus was a theropod that lived in the Yixian Formation, in the present-day Liaoning province, China, during the Early Cretaceous (124 million years BCE), and is currently, with between 7 and 9 meters in length and estimated weight at 1 ton, the largest non-avian dinosaur with concrete evidence of feathers, with impressions of its plumage preserved next to its fossils in various parts of the body, such as limbs, tail, back and close to the skull. The Yixian Formation itself is considered one of the most important paleontological sites in the world due to its rich extract of Late Jurassic and Early Cretaceous fossils of dinosaurs with feather prints, such as Yutyrannus itself, Beipiaosaurus and Tianyuraptor, as well as avian dinosaurs such as Confuciusornis - represented in the illustration.
Inhabiting a region of montane forests, with humid subtropical climate, the Yutyrannus stood out when it was discovered not only for its size or state of preservation, but for being a member of the superfamily Tyrannosauroidea , which also includes the famous Tyrannosaurus rex , instigating the thought that if a large animal like Y. huali would have feathers, perhaps T. rex would also have feathers, with several studies and hypotheses supporting and reinforcing the idea. However, the publication of skin prints of more recent tyrannosaurs in 2017 revealed that, at least in adulthood, feathers like those of the Yutyrannus would not be present in these animals, being either absent or too thin to be preserved, which even leads to comparisons where Yutyrannus would be like a mastodon, living in a milder climate than T. rex, and thus needing the feathers for extra thermal insulation, while the Tyrannosaurus would be like an elephant, with only vestigial feathers as result.

* Heracles inexpectatus - A giant with 1 meter tall and weighing about 7 kg, the New Zealand giant parrot was an avian dinosaur that inhabited the South Island of the archipelago during the Early Miocene (18-16 million years BCE) being the largest parrot ever found, but its fossil material, found in the Bannockburn Formation, is incomplete, basically consisting of bones of its hind legs. Due to its estimated dimensions and bone size, this parrot probably did not fly, spending its life on the forest floor and using its beak and claws to hang from low trees.
The Heracles genus belongs to the superfamily Strigipoidea, parrtos endemic to New Zealand, which occupy several niches that on the continents belong to other birds or even other animals. The giant parrot, being a classic example of island gigantism, would have a lifestyle similar to kakapo - the cutie next to it - currently the heaviest parrot in the world with only 4 kg of mass, that browses for food at night close to the ground, even with the aid of sensitive "whiskers" near the nostrils.
Another extreme example is the keas - the parrot hanging from the trunk in the background - that inhabit mountainous regions and have evolved to imitate the body plan of hawks and eagles, with curved and sharp claws and beaks, being opportunistic omnivores, feeding on fruits , insects, small mammals and even attacking flocks of sheep, being also one of the only avian dinosaurs that have organized flocks, with dominant males linked to several females, in addition to being intelligent and curious animals, sometimes causing damage to vehicles at skiing and camping stations in the New Zealand Alps.

* Deinocheirus mirificus - Another of Osmólska and Roniewicz's discoveries, the Deinocheirus is one of the most curious theropods ever discovered, living during the Late Cretaceous (71-69 million years BC) in the Nemegt Formation, in the middle of the Gobi Desert, Mongolia, that once was an environment cut by dense coniferous forests and flooded regions, with a diverse Mesozoic paleofauna.
Named in 1970, for a long time all that was known about Deinocheirus was a pair of immense arms, 2.4 meters long, finished in hands with three sharp claws, leading to believe that they belonged to a formidable predator of the clade Carnosauria, along with famous carnivores like megalosaurs and spinosaurs.
It was only in more recent analyzes that Deinocheirus was classified as belonging to the clade Ornithomimosauria and, thanks to new fossils found in 2014, its appearance has been completely altered. Instead of being a voracious carnivore with huge arms, the Deinocheirus was a giant of 11 meters in length and up to 7 tons in weight, the largest member of its clade, with a relatively long neck, a large hump on its back and a skull of almost 1 meter, with a big flattened duck-like bill. This creature's immense arms seem to be used to manipulate foliage both in trees and within rivers and lakes, having a lifestyle similar to that of a moose, possibly also being able to use its head and long neck to catch the various species of fish that inhabited the region.
Fused bones in its tail indicate the presence of feathers and, considering the evidence of such filaments in other relatively large members of its clade, it would not be surprising that the Deinocheirus would also be covered by feathers, more similar to the current ratites like emus and ostriches.
The pose I used here is inspired by the work of Joschua Knüppe fav.me/d6t1oh5

Description
From that point on, I started posting my drawings on a new IG profile, more focused on my work as an illustrator and that I suggest you follow too www.instagram.com/renatodesenh…

Dinosaurs has always been a passion of mine. But this thread is very important to me not only for that reason. At the end of last year my head asked for rest and care. Everything was starting to weigh and I finally started a treatment with a psychiatrist and psychologist, which I continue to this day.

My idea, as with the drawings of Brazilian folklore, was also to take the opportunity to educate lay people. I am not a scientist and at most amateur paleoartist , but I think that combining art and knowledge is the best thing that an illustrator can do. So I will post the descriptions that I did on IG here too. Any mistake I made please point here, both in the text and in the drawings.

* Yutyrannus huali - One of the most striking discoveries of the last decade, the Yutyrannus was a theropod that lived in the Yixian Formation, in the present-day Liaoning province, China, during the Early Cretaceous (124 million years BCE), and is currently, with between 7 and 9 meters in length and estimated weight at 1 ton, the largest non-avian dinosaur with concrete evidence of feathers, with impressions of its plumage preserved next to its fossils in various parts of the body, such as limbs, tail, back and close to the skull. The Yixian Formation itself is considered one of the most important paleontological sites in the world due to its rich extract of Late Jurassic and Early Cretaceous fossils of dinosaurs with feather prints, such as Yutyrannus itself, Beipiaosaurus and Tianyuraptor, as well as avian dinosaurs such as Confuciusornis - represented in the illustration.
Inhabiting a region of montane forests, with humid subtropical climate, the Yutyrannus stood out when it was discovered not only for its size or state of preservation, but for being a member of the superfamily Tyrannosauroidea , which also includes the famous Tyrannosaurus rex , instigating the thought that if a large animal like Y. huali would have feathers, perhaps T. rex would also have feathers, with several studies and hypotheses supporting and reinforcing the idea. However, the publication of skin prints of more recent tyrannosaurs in 2017 revealed that, at least in adulthood, feathers like those of the Yutyrannus would not be present in these animals, being either absent or too thin to be preserved, which even leads to comparisons where Yutyrannus would be like a mastodon, living in a milder climate than T. rex, and thus needing the feathers for extra thermal insulation, while the Tyrannosaurus would be like an elephant, with only vestigial feathers as result.

* Heracles inexpectatus - A giant with 1 meter tall and weighing about 7 kg, the New Zealand giant parrot was an avian dinosaur that inhabited the South Island of the archipelago during the Early Miocene (18-16 million years BCE) being the largest parrot ever found, but its fossil material, found in the Bannockburn Formation, is incomplete, basically consisting of bones of its hind legs. Due to its estimated dimensions and bone size, this parrot probably did not fly, spending its life on the forest floor and using its beak and claws to hang from low trees.
The Heracles genus belongs to the superfamily Strigipoidea, parrtos endemic to New Zealand, which occupy several niches that on the continents belong to other birds or even other animals. The giant parrot, being a classic example of island gigantism, would have a lifestyle similar to kakapo - the cutie next to it - currently the heaviest parrot in the world with only 4 kg of mass, that browses for food at night close to the ground, even with the aid of sensitive "whiskers" near the nostrils.
Another extreme example is the keas - the parrot hanging from the trunk in the background - that inhabit mountainous regions and have evolved to imitate the body plan of hawks and eagles, with curved and sharp claws and beaks, being opportunistic omnivores, feeding on fruits , insects, small mammals and even attacking flocks of sheep, being also one of the only avian dinosaurs that have organized flocks, with dominant males linked to several females, in addition to being intelligent and curious animals, sometimes causing damage to vehicles at skiing and camping stations in the New Zealand Alps.

* Deinocheirus mirificus - Another of Osmólska and Roniewicz's discoveries, the Deinocheirus is one of the most curious theropods ever discovered, living during the Late Cretaceous (71-69 million years BC) in the Nemegt Formation, in the middle of the Gobi Desert, Mongolia, that once was an environment cut by dense coniferous forests and flooded regions, with a diverse Mesozoic paleofauna.
Named in 1970, for a long time all that was known about Deinocheirus was a pair of immense arms, 2.4 meters long, finished in hands with three sharp claws, leading to believe that they belonged to a formidable predator of the clade Carnosauria, along with famous carnivores like megalosaurs and spinosaurs.
It was only in more recent analyzes that Deinocheirus was classified as belonging to the clade Ornithomimosauria and, thanks to new fossils found in 2014, its appearance has been completely altered. Instead of being a voracious carnivore with huge arms, the Deinocheirus was a giant of 11 meters in length and up to 7 tons in weight, the largest member of its clade, with a relatively long neck, a large hump on its back and a skull of almost 1 meter, with a big flattened duck-like bill. This creature's immense arms seem to be used to manipulate foliage both in trees and within rivers and lakes, having a lifestyle similar to that of a moose, possibly also being able to use its head and long neck to catch the various species of fish that inhabited the region.
Fused bones in its tail indicate the presence of feathers and, considering the evidence of such filaments in other relatively large members of its clade, it would not be surprising that the Deinocheirus would also be covered by feathers, more similar to the current ratites like emus and ostriches.
The pose I used here is inspired by the work of Joschua Knüppe fav.me/d6t1oh5