Transcript generated automatically by AI and may contain errors.
Chapter 1: What is the main topic discussed in this episode?
Dinosaurs, they're old, awesome, large, probably loud, lovable, famous, and then maybe ironically, highly misunderstood.
Chapter 2: What misconceptions do people have about dinosaurs?
Over the years, be it thanks to a blockbuster movie, an inaccurate documentary, or what have you, the general person's idea of what a dinosaur is has essentially been molded into a mixed bag of inaccuracies, and this has partially led to a pretty big trend in the dinosaur space of clearing up said inaccuracies, or dinosaur myths.
Essentially, things that may sound true about them, but are in reality, false. And this got me thinking though, what about the things that may sound false at first, but are in fact actually true? The facts about our favorite prehistoric goobers, which simply seem impossible, yet are reality.
And because this group is so crazy, it turns out there is not one, but multiple statements about them that seem rather unbelievable, including for a start, that dinosaurs evolved before grass and before flowers.
Chapter 3: What are some unbelievable facts about dinosaur evolution?
Yeah, let that sink in for a minute. Flowers and grass, something most people see every day, and maybe even have in their house, did not exist when dinosaurs first showed up. And this seemingly out of whack timeline is simply a result of how insanely prehistoric this group truly is.
Considering, as far as we know, the evolution of the first true dinosaurs could date as far back as the Middle Triassic, some 234 million years ago, or at the very latest, 233 million years ago during the Carnian stage of the Triassic. which would depend on which species one considers as the first real dino.
And to really put this time into perspective, that is so long ago that many dinosaurs technically also lived on the other side of the galaxy, despite inhabiting the same Earth that we live on.
Because, if you didn't know, the Earth and the solar system is always flying through space like a bullet, and since that time so long ago, it has traveled through different galactic neighborhoods within the Milky Way. On top of this, dinosaurs evolved so long ago that none of the oceans and seas around now were a thing yet, and Earth's landmasses would have been unrecognizable to you on a map.
Chapter 4: How did dinosaurs coexist with their environments?
And it's not just how old dinosaurs are, period, but how long their reign would go on for. I mean, sure, the very first dinosaurs were not the most impressive bunch, and in general they tended to be on the smaller side, were usually bipedal, and possessed elongated tail-like appendages, yet they still were able to get their foot in the door, metaphorically.
and were partially aided by a mass extinction event, which would cause them to diversify into a huge amount of varying groups and families, where they achieved a level of success that's never been seen before or since, as they essentially reigned as the planet's most dominant group for over 165 million years straight. For comparison, the rain in modern humans is less than 0.2% of that.
Chapter 5: What surprising timeline exists between different dinosaur species?
So, we have some ways to go, and based on how that way is going right now, I don't think that's going to happen. And because of this long rain, it's actually the majority of non-avian dinosaurs that never experienced grass nor flowers, with flowers popping up between 130 and 140 million years ago, while for grass, it was no earlier than 100 million years ago.
In other words, every dinosaur to have existed through the Triassic and the Jurassic would never have seen anything like flowers or grass, and hypothetically, maybe would have been quite confused by their presence. And because of their absurd age and duration of reign, there are a multitude of other almost impossible statements which would be true as well.
For instance, it's also true to say that you live closer in time to a T-Rex than it did to a Stegosaurus, with a 76 million year gap in between them, while for us in the Big King, it is just 66 million years. Now, this is one of the more common time facts regarding dinosaurs, so you might have heard of it before.
But another way of looking at it is that by the time the T-Rex showed up, many of the dinosaurs you often think of living side by side with it were not only gone, but already fossilized. For example, take the Allosaurus. It has been shown more than once in movies and in other media, fighting a T-Rex.
And yet, this brawl is about as accurate as an alien making a movie in which humans are battling a triceratops.
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Chapter 6: Why did dinosaurs never become fully aquatic?
So yeah, pretty crazy. And on a similar note, it's not just the time relating to dinosaurs that's hard to wrap our heads around, but also their physical distance, so to speak. Because, and unsurprisingly, just like animals of today, the dinosaurs of old each had their own areas and environments that they called home.
And this probably makes a lot of sense to you, but it does also mean that a lot of dinosaurs that people think lived together in fact did not, even if they did somewhat line up roughly on the timeline.
And this is perhaps best showcased by the first Jurassic Park, where in that final battle, a pack of quote unquote velociraptors take on a tyrannosaurus, resulting in many considering the two to be arch enemies.
And though these two species did technically coexist in time, they definitely never fought, or even met for that matter, as the Velociraptor was restrained to the Asian continent while the T-Rex was found in North America. And really the takeaway here is that dinosaurs lived all over the world, not just in one spot, with every single continent having some degree of dinosaur fossils in them.
Chapter 7: How are birds related to dinosaurs?
And because of this range and their mind numbingly long existence, dinosaurs came in just about every shape and size, and expanded to almost every niche you can imagine. Which is why I also find it quite hard to believe that during their entire reign, not a single one of them ever became fully aquatic.
Now you may know this already if you've watched some of my other videos, but come on, that's pretty freaking insane. As across the entire board, none made the transition to being fully aquatic, whereas other groups like mammals, snakes, turtles, and more have made the return, which is pretty odd.
Now, in reality, their absence from the water comes down to a multitude of different reasons and chances that make things a bit more obvious.
But simply said, if I had to put three reasons as to why, the first part is that their naturally buoyant bones don't act as good water weights to counteract buoyancy, second, their egg designs are made very poorly to resist the effects of being submerged in water, and then third, is that tough competition already occupied the water during the Mesozoic. Looking at you, plesiosaurs.
But what's also odd is that even now, no fully aquatic dinosaurs exist. You might be thinking, well, duh, there are no dinosaurs around.
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Chapter 8: What evidence supports the classification of birds as dinosaurs?
And yet, they are all around us. As again, against popular misconceptions, the group never died, as birds are in fact dinosaurs. Shocker, I know. And I don't mean they're dinosaur-like, or just heavily related to them. Rather, they are dinosaurs in every sense of the word, just as much as an Allosaurus or Argentinosaurus is.
And part of this confusion surrounding birds stems from how we refer to them as avian dinosaurs and the extinct group as non-avian dinosaurs. But really all avian means is that birds are aviolae, the last clade of living dinosaurs. It'd kind of be like if tyrannosaurids had survived and then you would hear that the tyrannosaurids lived while non-tyrannosaurids did not.
So in the end they are still obviously both dinosaurs, it's just a taxonomic thing. And because birds are dinosaurs in, again, every sense, it also means that dinosaurs are technically still one of the most successful groups of animals alive. And while they don't rule the land, per se, like they used to, saying that dinosaurs rule the skies is a valid statement.
Especially considering that over the 11,000 known bird species, over 99% of them are fliers. So in a way, their rule never ended. It just changed. Additionally, because those 1% of birds that still walk around part- or full-time, you would technically still be correct in saying that dinosaurs still walk the planet to this day, no matter how strange that sounds.
Another fascinating thing about birds, and their relation to dinosaurs, is that they are all theropods, who belong to the Maniraptor acclade. The very same clay, by the way, that gave us Therizinosaurus and Oviraptors as well.
Which also means that a bird is way more related to dinosaurs such as the Therizinosaurus than the Therizinosaurus was to many of the quote-unquote traditional dinosaurs it lived alongside. Additionally, just because it's so famous, you should also know that birds are more related to the T. rex than the T. rexes to either an Allosaurus or a Giganotosaurus, no matter how hard that is to believe.
I mean, they look very similar to some, and are definitely more similar in size, and yet, a chicken is more related to a T. rex than a T. rex is to a Giganotosaurus. So next time you see a chicken, put some respect on it. And understandably, some of you may be skeptical of this information, especially because at first it does seem like a bit of a stretch.
However, this conclusion comes from years of research that involves many different independent pieces of evidence. Firstly, while dinosaurs were diverse across the board, birds did highly resemble numerous non-avian genera, such as velociraptors or microraptors, while even their plumage and soft tissue matched what has been seen in other dinosaurs, suggesting a strong relation.
Because while convergent evolution can explain feathers and multiple creatures, the exact details of the feathers are rarely the same unless two things are related, given how complex they are structurally.
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