Dinosaur

Most of your favorite dinosaurs didn’t live a the same time. They were mostly spread across 200 million years or so, and across the entire globe. Notable exceptions: allosaurus and stegosaurus lived together, as well as Tyrannosaurus rex and triceratops did. More on reddit.com

Not dinosaurs but I think it’s plenty plausible that there’s a ton of pterosaur body plans we have yet to uncover. They’re an extremely diverse group as is. More on reddit.com

Generally- Shrink-wrapping, the absence of enough soft tissue on the reconstructions. The skull openings wouldn’t be as visible as they are in many 90s reconstructions. Pronated hands. Theropods like Tyrannosaurus could not face their palms down, as if they were playing the piano. Instead, their palms would face inwards, as if they were about to clap. Bending their wrists like they do in many 90s reconstructions would require them to physically break their wrists. Feathering. Now, not every dinosaur should have feathering, we actually have scaly skin impressions from several hadrosaurs, ankylosaurs, and a few others showing the opposite, but many theropods and a few others should definitely possess a feathery integument. Many would even possess wing feathers and tail fans. A scaly Velociraptor these days is about as accurate as a scaly parrot. It is sometimes incorrectly stated in 90s books that birds are just descendants of dinosaurs. Birds ARE dinosaurs. Birds actually appeared long before all the other lineages went extinct. Birds just happened to live longer. This is a modern misconception partially related to this. No, chickens are not direct descendants of Tyrannosaurus nor are chickens the closest living relatives of Tyrannosaurus. Birds as a group predate Tyrannosaurus, and emerged in a separate lineage of dinosaurs. And all modern birds are equally related to Tyrannosaurus, chickens aren’t special. As for the Velociraptor thing you brought up, Velociraptor was always known to be quite small compared to its Jurassic Park equivalent. Jurassic Park seems to have been inspired by a dubious idea that Deinonychus, a much larger dromaeosaur from far earlier in time, and Velociraptor were actually the same genus, but different species. By the way, genus would be Tyrannosaurus or Homo. A species would be rex or sapiens, to give examples. Anyway, the Jurassic Park raptors are basically just slightly oversized Deinonychus in terms of skull shape and proportions, at least the understanding of Deinonychus at the time. Their pack hunting behavior was also inspired by Deinonychus finds. It was also once thought that all non-avian dinosaurs went extinct 65 million years ago. Improved dating methods have revealed that a date of 66 million years ago is more accurate. Lips are mostly (I think there’s still someeee debate?) agreed to be present on theropods (the meat-eaters, as you’d probably call them). If you look at say, the Jurassic Park Tyrannosaurus, you’ll see that it has its teeth on full display. Given than lips are basically the default for land vertebrates, and teeth usually require a lot of specializations in order to be stuck out of the mouth like that, theropods would have likely had an immobile lip covering their teeth, so they’d be hidden when the mouth was closed. If you want an example of this, look at Prehistoric Planet’s Tyrannosaurus. Those are the basics. There are a lot more smaller misconceptions that are more specific, but I don’t want to be here all day 😂 I hope this helps. More on reddit.com

It depends on the dinosaur. DNA breaks down completely over just a couple of million years, and it’s completely useless after after a few thousand (it can vary based on climate). Any dinosaur that went extinct within the past few hundred or thousand years could possibly be brought back. Something like Raphus cucullatus is probably one of the least controversial and species to resurrect and has had some of the most research put into it. I’m guessing you actually mean non-avian dinosaur. The answer to that is definitely not. Jack Horner has tried and failed. He was claiming it can help to teach about evolution, but really he just wanted to eat it. The project involved reactivating dormant genes in a chicken to give it teeth, scales, hands and a tail. The genes to create a long tail don’t exist in chickens so he tried creating a chimera using a crocodile’s tail genes. Technically the project is still ongoing but everyone in palaeontology criticises it and progress has basically stopped altogether. The DNA of non-avian dinosaurs is gone, there are no close enough relatives to serve as surrogate mothers and you can’t turn one species into another with gene editing. This is a complete fantasy and waste of scientific funding. More on reddit.com