This image is just for a question and not like one of those 'vs' images i use to post. If that is the case then one member from the dinosaurs group is enough to completely destroy the mammals group and that is Apatosaurus.
Ankylosaurus could likely cripple that indricothere with a single swing of that tail club.
Carcharodontosaurus couldn't get in close enough to attack Megatherium without getting slashed by those claws.
...H. gorgops would devour Spinosaurus in one bite.
Because they're much more ancient & adaptable...
And they too are still alive !
Dinosaurs were the dominant species for 160 million years, so far mammals have only been dominant for 50 million but the combined IQ of all those dinosaurs is about the same as one elephant so it depends on what criteria you are using.
Interestingly Mammals get bigger at high latitudes but Dinosaurs & reptiles get smaller?
the mammals might have a chance
But in adaptability, us mammals have the edge, and in the end,
Its survival of the fittest, of those who can adapt,
Thats why Mammals have survived so much extintions,
Although Im a bigger fan of Dinosaurs, I have to say, that mammals are superior
Its you again, Well, I enjoy arguing with you, Its a nice discussion from Dino expert to Dino Expert,
Ill start my argument:
Youre absolutely right, Dinos are the biggest beings that ever walked the earth, and if they havent gotten extinct, they would still be ruling supreme, while mammals would still be lowly insectivores.
(You and I would be a pair of brainy Troodons fighting)
BUT, its the Dinosaurs extinction the reason of why mammals are superior,
Lets get one thing straight, before you say that Dinosaurs adapted and evolved to birds, remeber they had already evolved 145 MYA before their extinction, So they, altough descendants of dinosaurs, wont get included in this argument,
Its all a matter of adaptability, thats it, Do you see any Dinosaur walking by? You must be thinking: "This guy is crazy, there is no way a Mouse could be better than a 6 ton T-Rex"
Well, mouses are still alive and wagging and T-Rex is now a handful of bones.
You say Dinosaurs were more adaptable, yeah, they conquered every corner in earth, and did it for 160 MY, but then dissapeared, why?
Now this is when my argument gets height, Dinosaurs were massive, most going beyond 1 meter in lenght, And the largest reaching over 46 meters and 80 tons, while mammals were then, simple and pathetic 18 cm animals,
Dinosaurs win in all these categories, Large, Strong, adaptable, efficient, and everything else you can come up with,
BUT, it was the Terrible Lizard greatness, what provoked their downfall,
Predators like Carcharodontosaurus needed over 60 kg of meat everyday to survive, while Giant herbivores like Argentinosaurus, needed over 800 kg of leafs,
Now, lets go back 65 MYA, It all was pretty much the same, but, not until the apocalypse came with the meteor,
All dinosaurs dissapeared, but mammals survived, why?
When all vegetation died, the Large herbivores Dissapeared, because there wasnt enough vegetation to keep their massive bodies going,
and then they dissapeared, Predators had plenty of Carrion to keep going tough, but those food supplies eventually faded, and one by one the great predators Dissapeared,
There wasnt a single group of herbivores to survive, The Ceratopsians, the Hadrosaurids, nor the Titanosaurids,
And neither the great carnivores, Tyrannosaurids, Charcharodontosaurids, Dromeaosaurids, nor Abelisaurids,
They were all gone,
Their large bodies needed a lot of food, even the smallest dino needed over 25 kg of food to survive, but there was nothing left, so they dissapeared,
Its true, they were highly adaptable, but adapting means being capable of withstanding changes, and the change brought with the meteor, was a change Dinosaurs couldnt adapt to,
They were gone, Forever...
But all the tiny groups of animals, hiding in the shadows survived, they were capable of hibernating, giving them great endurance to the hunger and low supplies of food, and some could be months whithout food, among them, were the mammals,
They slowly started from when Dinosaurs left. And rised their own great kingdom, one that has prevailed till today.
Dinosaurs didnt survived, but us, the mammals, Did.
I telled the history of the extinction to make my point more clear,
We admire Dinosaurs, but if they had been better than us, they would have survived the extinction, us survived. And have survived many more, so, Its up to you to believe Dinosaurs were better,
And Ill tell you, Mammals being better than Dinosaurs,
Doesnt make them any less majestic than they were, and forever will be
(OK sir, your move)