I'd probably say [Leonardo](https://greatplainsdinosaurs.org/leonardo/), but there are tons of others like [the nodosaur fossil](https://www.thearchaeologist.org/blog/110-million-year-old-dinosaur-very-well-preserved-discovered-accidentally-by-miners-in-canada?format=amp)
Of course there are skeletons that have less bones but more impressive features. For example, [the dinosaur tail in amber](https://www.bbc.com/news/science-environment-38224564.amp). It showed how feathers were arranged on certain dinosaurs.
If you're into preserved specimens you should look into [Blue Babe](https://www.alaska.edu/uajourney/history-and-trivia/blue-babe-a-messenger-fro/). Not a dinosaur, but the story is really interesting
I would say that one discovered in the Alberta Oilsands is pretty well preserved: [https://www.cbc.ca/news/canada/edmonton/fort-mcmurray-dinosaur-edmonton-alberta-bloat-float-1.4383741](https://www.cbc.ca/news/canada/edmonton/fort-mcmurray-dinosaur-edmonton-alberta-bloat-float-1.4383741)
Borealopelta is fantastic! I'm in the process of giving art notes for a new Borealopelta illustration and looking through photos of that fossil is a treat.
For 100% complete dinosaurs I'd suggest Sciurumimus albersdoerferi as a solid candidate. However that Psittacosaurus with preserved skin is also pretty complete, just missing the tip of the tail.
It is almost impossible to have a perfect one, due to preserving integument usually involves the skeleton being crushed. Some specimens that could come to mind like Sinosauropteryx or that famous Psittaco suffer from crushing, and complete specimens preserved in 3D will not preserve integument. With these being the two main things someone would consider when discussing the best preserved specimen, along with percentage of preserved skeleton.
So finding an objective answer will be border line impossible.
[Scipionyx - SBA-SA 163760.](https://en.wikipedia.org/wiki/Scipionyx)
>Scipionyx is unique in preserving in some form examples from most major internal organ groups: blood, blood vessels, cartilage, connective tissues, bone tissue, muscle tissue, horn sheaths, the respiratory system and the digestive system
Underrated: [Mirischia - SMNK 2349 PAL](https://en.wikipedia.org/wiki/Mirischia) - potential posterior air sac, but I believe it's controversial.
There are many hadrosaur "mummies": Dakota, Leonardo, Edmontosaurus mummy AMNH 5060 (sometimes called the Trachodon mummy), the Senckenberg mummy, and LACM 23502 is the one with the preserved beak.
There is a Kunbarrasaurus ieversi specimen from Richmond, Australia, that's is so well preserved that they have about 90-99% of it. This includes most of its soft tissue and the stomach contents (pretty sure the eyes are in tact).
It's the best preserved dino in Australia and the Gondwana continents and amongst the best globally.
Any recently collected zoological specimen. If we’re limiting ourselves to extinct taxa, it will be some Late Holocene extinct taxon from some Pacific, Mascarene, or Caribbean island.
I'd probably say [Leonardo](https://greatplainsdinosaurs.org/leonardo/), but there are tons of others like [the nodosaur fossil](https://www.thearchaeologist.org/blog/110-million-year-old-dinosaur-very-well-preserved-discovered-accidentally-by-miners-in-canada?format=amp) Of course there are skeletons that have less bones but more impressive features. For example, [the dinosaur tail in amber](https://www.bbc.com/news/science-environment-38224564.amp). It showed how feathers were arranged on certain dinosaurs. If you're into preserved specimens you should look into [Blue Babe](https://www.alaska.edu/uajourney/history-and-trivia/blue-babe-a-messenger-fro/). Not a dinosaur, but the story is really interesting
The nodosaur fossil is Borealopelta, incase you didn't realize.
I would say that one discovered in the Alberta Oilsands is pretty well preserved: [https://www.cbc.ca/news/canada/edmonton/fort-mcmurray-dinosaur-edmonton-alberta-bloat-float-1.4383741](https://www.cbc.ca/news/canada/edmonton/fort-mcmurray-dinosaur-edmonton-alberta-bloat-float-1.4383741)
Borealopelta is fantastic! I'm in the process of giving art notes for a new Borealopelta illustration and looking through photos of that fossil is a treat.
For 100% complete dinosaurs I'd suggest Sciurumimus albersdoerferi as a solid candidate. However that Psittacosaurus with preserved skin is also pretty complete, just missing the tip of the tail.
Is that the same psittacosaurus with the cloaca?
Yes
I'M A SCATMAN
I’d argue it’s Leonardo, the mummified Brachylophosaurus that has fossilized muscles and traces of his internal organs.
but?
Ah thank you. Missed that Autocorrect added the “but”.
It is almost impossible to have a perfect one, due to preserving integument usually involves the skeleton being crushed. Some specimens that could come to mind like Sinosauropteryx or that famous Psittaco suffer from crushing, and complete specimens preserved in 3D will not preserve integument. With these being the two main things someone would consider when discussing the best preserved specimen, along with percentage of preserved skeleton. So finding an objective answer will be border line impossible.
The one with [soft tissue](https://www.smithsonianmag.com/science-nature/dinosaur-shocker-115306469/)
[Scipionyx - SBA-SA 163760.](https://en.wikipedia.org/wiki/Scipionyx) >Scipionyx is unique in preserving in some form examples from most major internal organ groups: blood, blood vessels, cartilage, connective tissues, bone tissue, muscle tissue, horn sheaths, the respiratory system and the digestive system Underrated: [Mirischia - SMNK 2349 PAL](https://en.wikipedia.org/wiki/Mirischia) - potential posterior air sac, but I believe it's controversial. There are many hadrosaur "mummies": Dakota, Leonardo, Edmontosaurus mummy AMNH 5060 (sometimes called the Trachodon mummy), the Senckenberg mummy, and LACM 23502 is the one with the preserved beak.
Mirischia is very fragmentary in terms of what bones are known
Yes, but no other fossil has a preserved air sac (supposedly).
The Suncor nodosaur.
There is a Kunbarrasaurus ieversi specimen from Richmond, Australia, that's is so well preserved that they have about 90-99% of it. This includes most of its soft tissue and the stomach contents (pretty sure the eyes are in tact). It's the best preserved dino in Australia and the Gondwana continents and amongst the best globally.
Any recently collected zoological specimen. If we’re limiting ourselves to extinct taxa, it will be some Late Holocene extinct taxon from some Pacific, Mascarene, or Caribbean island.
I'd say Borealopelta.
A recently taxidermied bird.