A brave new world: the dinosaurs not quite wiped out.....

Earth's atmosphere, 65 Million BC:

The apocalypse had come. It came in the form of a huge, jagged piece of space rock, worn down by seemingly endless millennia of collisions with other asteroids, yet still formidable, daunting.
And dangerous.
It had spent millions of years hurtling through the bitterly cold, endless expanse of space, passing stars and planets, all of of a vast array of different shapes, sizes, colours, dying stars that were pulsated with energy desperatly bursting to be released, planets smothered in thick emerald green fog, planets made of blood red rock.
So beautiful, picaresque, dazzling and utterly lifeless. And the asteroid had flown past them harmlessly. But this planet it was hurtling towards was different.
It had life.
It had entire continents covered in thick, lush forests full of stinking primeval swamps .
Dry, scorching hot deserts where only the toughest survived, wide expanses of flat grassy plains that were inhabited of by a Margery of monsters never seen before.
Huge, lumbering beasts we would have called " sauropods," with long windy necks that reached up through the thick canopy of trees into the blue skies above, Winged, grotesque flying demons that soared through the skies in there endless search for prey, smaller herd based creatures with strange crests with which they could create beautiful melodies that bathed the plains with a cacophony of sound and huge, terrifying, two legged tyrants, with hundreds of serrated, jagged teeth in a massive jaw capable of ripping its way through even the toughest bone or tendon. It had a vast body frame that put off even the bravest and most persistent rival, making it the master of all it surveyed through its cruel , piercing reptilian eyes.

All of them living in perfect harmony, in a never ending circle of life that had existed for billions of years and seemed would continue for another billion years.

And then a blinding flaming ball of flame tote through the sky and in that instant the entire world, with its perfect yet delicate circles were torn apart and plunged the world into fire, smoke, choking gas and then an endless winter. And when the dust settled everything had changed. The vast forests were reduced to tinder wood, deserts turned to Arctic wildernesses, the great grasslands turned to a seemingly lifeless burial ground, covered in ash covered bones belonging to once to mighty monsters. All gone.
And then, out of the darkness, a flash of green. Then another, then a high pitched cry that tare through the cold silent air. Bushes rustle, gravel crushed underfoot. And then, emerging like some hellish demon out of the black smoke, a small, two legged creature, a Therapod, with two huge yellow bulging eyes, and on its arms and legs huge curved claws, perfected over millions of years for tearing maiming, and killing. it seems pitiful, puny in comparison to the mighty beasts who once dwelled on these plains.
Yet it is this small creature that is the future.

For something has survived.
 
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this TL is a story of prehistoric as you've never seen it before. A world were the not all the dinosaurs died out, where a few, scattered pockets of small, intelligent, ruthless raptor like dinosaurs live on and begin to adapt, then dominate the brand new world it inhabits. But it wont be alone. Because the death of other Dinosaurs leaves vacancies that other beasts, mammals and birds will move to take there place and begin to fight for Raptors for dominance of earth.....

Any criticisms, questions, tips, ideas or comments you may have please post, as this is my first TL, so i'll need all the help i can get.
Hope you enjoy!
 
Hmm, I'm not sure about cold reptilian eyes. Dinosaurs were warm blooded. And be careful with evolutionary PoDs, butterflies could be up the charts, you could easily divert mammalian evolution in other directions than OTL. Also, there are a couple of mass extinction events coming up, will the raptors survive them too?
 
Hmm, I'm not sure about cold reptilian eyes. Dinosaurs were warm blooded. And be careful with evolutionary PoDs, butterflies could be up the charts, you could easily divert mammalian evolution in other directions than OTL. Also, there are a couple of mass extinction events coming up, will the raptors survive them too?

This. The fact being, you are going to need to do a LOT of research to make this plausible. You gotta look up migration patterns, continental exchanges, climate changes, the evolutionary paths of other animals and what caused them, ocean currents, glacial patterns, volcanic eruptions, mega-volcanic eruptions, astronomical activity, paleoclimatology, paleobotany... All this AND MORE!

I tip my hat to you if you can pull it off, good sir. Best of luck, I'll be checking in to see how this goes :)

EDIT: Also, your updates would be easier to read if you put an extra space between your paragraphs
 
I'll follow this with interest, though you should be aware that I'm quite a pedant when it comes to evolutionary biology, especially as regards the Cenozoic period!

I'm interested to see how this will seriously impact upon evolution. Obviously, butterflies being what they are, things will change hugely, but at first glance things don't look TOO dissimilar from OTL. After all, flightless predatory dinosaurs were still the dominant predators for the early part of the Cenozoic, albeit in bird form, and I'm not too sure what advantage surviving coelurosaurs (I'm presuming a Troodon like creature?) will have over them. And, in any case, mammalian predators are still likely to be more intelligent and adaptable, and that's without reckoning in crocodilians, who are probably the largest predators to survive the extinction.

Let's see where you take this! :)
 
Thanks for the tips! firstly, I wish to get a few things out the way:

1: when i said " cold, reptilian eyes" i didn't mean literally " cold" i meant unwelcoming, calculating. Just saying:)'

2: I will NOT have humanoid raptors developing- i see no evolutionary point!
Raptors already walked on two feet, had feathers for insulation and aeronautical and it's body provided balance.

3: A common rule in alternate histories is that many things resort to how they were in OTL-especially climate change! This TL will see the the climate developing close to how it did OTL. we will see the world warming up and forests developing, then the rise and fall of oceon levels and of course the global drop in temperature leading to the Ice age. As a result, we will see identical animals to OTL evolving with a few exceptions- no " killer birds" I'm afraid, the presence of Raptors will prevent there cousins from getting big and taking there place.

We will however see animals like primitive horses, whales, birds, mammoths, crocodiles and eventually apes- something that may actually force the raptors the develop new attributes and skills to survive.

I'm currently unsure on how mankind will develop ( if they can evolve at all!)
I'm in the mindset that the presence of another highly intelligent animal will prevent there advance and stop them from developing farming and civilization as we know it- instead remaining stone age nomadic hunters. on the other hand- it could start a pre-historic arms race and see mankind develop faster in certain areas ( I.E war and weaponry and not so much in farming)

Any more advice is welcome!
 
I'll follow this with interest, though you should be aware that I'm quite a pedant when it comes to evolutionary biology, especially as regards the Cenozoic period!

. After all, flightless predatory dinosaurs were still the dominant predators for the early part of the Cenozoic, albeit in bird form, and I'm not too sure what advantage surviving coelurosaurs (I'm presuming a Troodon like creature?) will have over them. And, in any case, mammalian predators are still likely to be more intelligent and adaptable, and that's without reckoning in crocodilians, who are probably the largest predators to survive the extinction.

That's assuming they evolve at all! They only developed because there were NO major rivals! Also- the world that emerged after the K-T event was covered in thick jungle- an environment that is better suited to a small, intelligent, reptilian creature with supreme eyesight and that hunts in packs. So yes, it will be superior.

Good points though!
 
Will they for example survive the Eocene- Oligocene extinction event??

The raptors will probably out-compete some of the predators from OTL. And the prey will evolve differently due to them having to deal with a different predator. The evolutionary slippery slope is very present.
 
That's assuming they evolve at all! They only developed because there were NO major rivals! Also- the world that emerged after the K-T event was covered in thick jungle- an environment that is better suited to a small, intelligent, reptilian creature with supreme eyesight and that hunts in packs. So yes, it will be superior.

Good points though!

What are "they" that the surviving coelurosaurs will be superior to?

I wouldn't say that these creatures (probably better to call them "avian" rather than "reptilian") are necessarily going to be hugely more intelligent than are today's owls or eagles. Sure, intelligent creatures for archosaurs, but probably not at the level of cats and dogs for example.
 
Will they for example survive the Eocene- Oligocene extinction event??

The raptors will probably out-compete some of the predators from OTL. And the prey will evolve differently due to them having to deal with a different predator. The evolutionary slippery slope is very present.

The creature that survives ( and yes is Troodon- i use the term " Raptor for simplification- more on why soon) Is very resourceful, it survived an asteroid after all! I think that the advantage of the the type of dinosaur is that its so resourceful!

We have records of Veloceraptors on the wide open plains of Mongolia, Deinonychus in N- America, while Troodons relative microrapter thrived in thick forests while Megaraptor could was a dominant predator in it's area! . So yes, i fancy they would be able to evolve depending on the circumstances and could easily thrive in a post K-T world without Tyrannosaurus or other large Dinosaurs to challange it- and become the dominant predator.
 
What are "they" that the surviving coelurosaurs will be superior to?

I wouldn't say that these creatures (probably better to call them "avian" rather than "reptilian") are necessarily going to be hugely more intelligent than are today's owls or eagles. Sure, intelligent creatures for archosaurs, but probably not at the level of cats and dogs for example.

Sorry i meant the " Terror birds", giant birds that evolved in South America and thrived for millions of years. And I think you underestimate these Troodon:

They were the most intelligent Dinosaurs around ( but they were only as intelligent as possums i hear you cry! Well... so were early apes and look at us now!)

At the time of the K-T event the Troodon was developing unusual traits that we might recognise! Unlike most Dinosaurs, it cared for it's young, just like us. This could lead to it developing very advanced emotional responses not found outside humans and force it to develop complex systems to protect the eggs and get food. Therefore, we will see then develop semi- specialised jobs in each clan, E.G nursery, hunter and force them to appoint "chiefs"
Also. the fact that they care for there young forces them to settle in one area and not migrate, leading to a population boom, increased competition leading to more need to develop tools and, in order to negotiate with other " settlements" and communicate with this larger group they will need to develop at least basic language- and of course a settled culture= settlement= farming= basic Civilisation.

So the basic traits were there.
Not to mention 65 million years to develop them.
 
What I'm worried about are your claims that most of our modern mammals would evolve. If the Troodon and her descendants (I guess there would be several species evolving from the Troodon) get to be the top predator, we would probably see other predators that didn't go extinct OTL go extinct. We would also see different abilities being rewarded among the prey animals, which means they will evolve differently. Which means the species we have today wouldn't evolve, and there would be completely different species instead.
 
Actually, the Birds did try to occupy the niches lost by the dinosaurs in the early Cenozoic Era so I think the Mammals could compete with the Dinosaurs or just compete in some niches like in Grazing and Scavengers(like OTL Hyenas) seeing that in Cretaceous that the Dinosaurs were losing in diversity and the Mammals were starting to diversify in late Cretaceous.
 
What I'm worried about are your claims that most of our modern mammals would evolve. If the Troodon and her descendants (I guess there would be several species evolving from the Troodon) get to be the top predator, we would probably see other predators that didn't go extinct OTL go extinct. We would also see different abilities being rewarded among the prey animals, which means they will evolve differently. Which means the species we have today wouldn't evolve, and there would be completely different species instead.

That is a valid point and yes, many animals will develop differently. However, its worth noting that many factors effect how a species evolve, not just predators. The climate post K-T will be the same as OTL so we will see similar creatures developing. I think whales will still still develop as there's still that gap left for them to develop, the same with apes- though the presence of highly intelligent creatures will hugely affect there development. So yes, there will be differences.
 
Central Europe, early Eocene, 49 million years ago

A new day dawns on a beautiful Eocene forest.
Earth is slowly but surely recovering the the apocalyptic aftermath of the impact some 16 million years before. The huge lumbering monsters who once ruled here are now a long forgotten memory, there bones long turned to dust or crushed underneath of earth and rocks, lying undisturbed, trapped forever in there death poses as fiery, chocking death descended upon them.
But that was long ago.

In the place of the great plains of the late Cretaceous great forests of palm and Deciduous trees now smother the earth in in thick carpet of green, with these forests ranging from pole to pole. The earth is now the warmest it will ever be post K-T, the conditions at the south pole subtropical and palm trees growing in modern day Europe. Littered through these forests are great lakes of warm, crystal clear water full of huge crocodiles, determined to retain there niche, and thick mangrove swamps full of strange, exotic insects and amphibians that would be alien to us. Next to these lakes are fields of growing grassland, not yet the great Savannah's they will one day develop into, full of a vast rainbow of different coloured flowers, plants that developed in the mid- Cretaceous and now support a wide range of newly evolved animals and insects, such as early moths and butterflies.

The rising morning sun's rays are blocked by the thick canopy of trees, letting only a trickle of light onto the dark, damp floor below. Amongst the canopy there is a cacophony of noise from a vast array of different bird songs, each one calling out for a mate, for food, or a warning. Birds suffered badly during the mass extinction, with most species going extinct, but there superior ability to adapt and search out food meant that they were able to expand and reoccupy the vacant skies left by the pterosaurs. Lower down amongst the branches are small, furry mammals who swing through the leaves by grabbing on branches with there small, clasping hands, creatures we might call primitive primates.

But it is the forest floor that is truly alien. Marching amongst decaying plants and bones are vast armies of giant army ants, who strip all in there path, be carcass or unprotected eggs. Leaping through the bushes we can see a small, bipedal shrew like animal, a Leptictidium, desperately searching for berries for it's young before the bigger competitors appear, using it's small snout to sniff out food.

It's foraging is disturbed by the snapping of leaves that announce the arrival of a small group of ravenous Propalaeotherium, the early ancestors of modern day horses, with small hooves for protecting it's feet and moving faster and long, gangly legs for moving fast and big ears for detecting the slightest sound of an approaching predator(1)
and in this forest, there are many predators.

And one of them is stalking one of the young Propalaeotherium, large, yellow eyes peering out through the undergrowth to check out and evaluate it's victim, the eyes connected to one of the most advanced brains in the natural kingdom, a brain that can make, balanced, calculative decisions, that can devise complex hunting strategies, that cared for it's fellow clan mates.
A brain without any equivalent in the Eocene forest.
This hunter however is young, arrogant, inexperienced...
and impatient. He lunges forward bursting out of the undergrowth in a blur of reptilian skin, leaping out at his prey intending to pin it down and finish it with a swift blow with it's sharp, curved claws.

The Propalaeotherium lunges out of the way with ease with it's finely tuned prey instincts and immediately turns and runs towards it's herd, trusting it's long legs to guide it to safety. The young hunter, his immediate attempt foiled, angrily gives pursuit. He tares through the undergrowth, enabling us to fully view and understand his body. We can see it's long, reptilian legs covered in a thin layer of turtle green feathers, with a scaly, turkey like foot with three pertruding serrated claws, designed to first pin and kill it's victim.
It has long arms tucked underneath it's thin body, with hollow bones underneath like birds to add speed. It has a narrow, beak like snout, perfectly designed for searching out narrow places for food, with rows of balanced teeth inside, sharp teeth for tearing tough meat, blunter molars for chewing nuts, berries and other jungle fruits, giving it a balanced diet, and a frill of purple feathers scaling down it's back to attract a mate or scare off rivals. It is a creature without parallel.
It is a Agilodon- the last dinosaur.(2)

After several minutes of running through the thick, non ending undergrowth the Agilodon is beginning to tire, he is best at quick ambushes, not long distance running! The Propalaeotherium seeing it's peruser tire, summons it's last reserves of energy and sprints the last leg of the chase towards a clearing up ahead and apparent safety. The grassland is in site, the sun is peering through disappearing shrub, the Propalaeotherium has made it.
But it's a trap- the pack leader of the young Agilodon's clan had guessed that the male would do something stupid- and deployed accordingly.

As the Propalaeotherium bursts into the clearing, she springs her trap, leaping out of the bush land strait on the fleeing animal, sinking her tight jaws onto it's neck. The surprised Propalaeotherium panics and tries to throw her off, as other Agilodon take advantage and attack from different sides to confuse it's prey, with one experienced male able to sink it's curved claw into the exhausted animals neck. The Propalaeotherium, tired from it's long chase, is powerless and crumples. With downward slice by the female, it is over.
The whooping, high pitched victory cry of the Agilodon echo through the picturesque Eocene morning, heralding the beginning of a new day.
And a new era.

Next time, a more in depth view of the Agilodon and there traits and relatives.

Any tips or criticism is welcome!
(1): In OTL, the Propalaeotherium was smaller, and had shorter legs. In this TL though, the presence of a fast, advanced predator has forced to adapt accordingly, the longer legs designed to outrun any hunter.
(2): Agilodon: greek ( " Agile tooth.")
 
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