Well Axe... you stirred up a pot of information I thought I had long since forgotten. Now, before I continue, 1) this knowledge is all from 1999-2005 I really almost studied dinosaurs and prehistoric life through those years, read tons of books, watched documentary upon documentary and always wanted a pet Albertasaurus... I was 7... go figure. Anyway, this has ever since been secluded in my mind, so any memories might be foggy and I will appreciate any corrections that you ('you' in general) feel fit to make.
The theory that I grew up with, as well as found in my endless (I'll call it studies from now on just for ease of use) studies is as follows:
[First just a brief introduction into the past 600 million years just as reference]
[The following is going to be taken out of a book I still consult for any dinosaur/ pre-history things called '
The Ultimate Book Of Dinosaurs' on page 10 under the title '
When Did Dinosaurs Live?']
"
The Age Of Dinosaurs Earth is an old planet. Scientists think that it formed about 4,500 million years ago. They divide the whole of Earth's long existance into intervals of time, each of which represents a chapter in the story of the planet.
About 600 million years ago, a new chapter began. Scientists call this the Phanerozoic Eon. It is divided into three smaller parts called eras. The oldest part is the Paleozoic Era, which was followed by the Mesozoic Era, Which in turn was followed by the Cenozoic Era.
The Mesozoic Era is the scientific name for the Age of Dinosaurs. It was during the Mesozoic that Dinosaurs appeared, and then died out. Humans appeared during the Cenozoic Era, an interval of time which continues right up to the present day. The following table shows how the three eras fit together.
[I will try my best to reproduce the table... please bear with me]
Era ~ Meaning ~ Millions of years ago ~ Which animals appeared?Cenozoic ~ "Recent Life" ~ 65 to the present day ~ Mammals, including humans
Mesozoic ~ "Middle Life" ~ 250-65 ~ Dinosaurs
Palaeozoic ~ "Ancient life" ~ 600-250 ~ fishes, amphibians, reptiles
Now we travel into the 3 most common terms when relating towards dinosaurs and their lifespan: Triassic, Jurrassic and Cretaceous. Each of these have a different time span as well as different dinosaurs and species living in each.
Triassic (a period from 250-206 million years ago) was the time of the first dinosaurs.
Jurrassic (a period from 206-144 million years ago) was the greatest time for dinosaurs.
(due to what I think is evolution (natural selection) old age... starvation, climate change etc many species suddenly (over the course of thousands of years, keep in mind that this period is 62,000,000 years long... roughly) died off and only a few came from (evolution) and survived (stupidity to stay around that long) to stay into the... )
Cretaceous (a period from 144-65 million years ago) was the time of the last dinosaurs.
Now the theory of how they died:[again, this is not FACT... it is a theory that I (to this day) strongly agree with, because it seems the most likely.]
You all know the story of the meteorite hitting earth and killing the dinosaurs... one massive explosion everything dead... and the one of '
the great freeze' that the world just suddenly froze over... killing everything... well, no, actually it's far from both and the exact same as well... confusing yet

good,
ALTHOUGH the meteorite hit earth unlike anything ever before or since and ripped through the earth's crust like a hot knife through marshmallow, that is not what killed the dino's off, (of course they can't just look up and scream "RUN AWAY!

" and go apeshit without leaving at least a few dead (due to being trampled and hit by the meteor)) the true killer was the following few hundred years... what happened then is exactly what happens in all 'doomsday' movies. everything goes wrong in essence. The first few decades was ok... ish, the debris that the meteor kicked up spread through many continents, stayed in the atmosphere, even seeping into the stratosphere

and blocking out the suns rays in a huge part of the world.
Now comes the interesting part and proof as to how sensitive the natural eco-system is on Earth.
The debris blocked out the sun, which means no more warmth in a lot of the world ('
the great freeze' was caused by this but I'll get to that a bit later) BUT REMEMBER THE SUNS RAYS!!!

Wait... you're f***ing with me right?? the
RAYS?? come on, have a better reason than that please...
Ok, heres a chain reaction for you, take the suns rays away (ignore the freezing temperatures and the meteor fallout suffocating many beasts) the PLANTS YOU MORON... plants need sunlight to photosynthesize... or 'live' for anyone not called a paleontologist. the plants died out, killing most of the herbivores's food... and what are herbivores also called?? prey for carnivores of course... so, one thing dies, the rest follows. the VERY sensitive balance of mother nature has been tipped... (After taking into compensation that suffocation, freezing, fires have all already taken their toll on living things and STILL taking their toll in the few decades after) many animals that only live on plants died out, many that live off of the planteaters died off as well...
Ok, so now comes
the great freeze also called an Ice Age (it's only now that I come across this bloody word, I'm just now too lazy to go through and change them all) now of course many animals already increased their fur layers, padding, thermal protection etc (which can happen quite quickly you know) and it is also in this time that early homo-Sapiens came fourth,
[Note... I'll get back to this in a few] now the Ice Age dissipated quite quickly as soon as the fallout from the meteor fell and the suns rays came through. So many of the animals that were close to extinction in their short lives already (Wooly Mammoths, Sabre-toothed Tigers, early homo sapiens 'Neanderthals' and and and) just... either developed less padding and thermal insulation or just... died sadly, but all in the greater good, more food (for a few months- years) for those that need it, more fur for our ancestors to dampen the cold a bit and and and.
[Note I wanted to come back to as well as in light of what Axe said as well](Ok, I mentioned possibly, and will mention 'Homo sapiens, only later I realised... WE are homo sapiens, I'm referring to early man like creatures when I say 'Homo Sapiens'
Now... taking a look at Axe's theory, why focus on the one listed above as FACT... and completely ignore the scientific relevance of Axe's one?? why concentrate on ONE if BOTH can be combined... now hypothetically speaking, how farfetched is it to think that
VERY VERY early homo sapiens lived with the late dinos?? and why take it for granted that ONLY US can draw?? So in this CHAOTIC period of dismay and dismemberment at around 65 million years ago involving asteroids, cold, suffocation, massive beasts, homo sapien like creatures (God, sounds like Star Wars) that somewhere, somehow that those homo sapien like creatures 'drew' the remaining few dinosaurs??
(Let me know what you think of this last paragraph)
I do apologise for the lengty read, but I enjoyed writing this, hopefully this is as enjoyable to read as it was to write.