What do you think wiped out the dinosaurs?

I'm partial to the Alvarez Hypothesis that an asteroid struck the coast of the Yucatán peninsula in Mexico reaping immediate death of large, terrestrial animals in a 2,500 mile radius and the eventual death of 80% of life on earth due to consequent ecological shifts from impact. The K-T boundary exhibiting a concentration of iridium not found anywhere on the planet (and indeed matches the composition of asteroids) is the strongest piece of evidence for this hypothesis. "Climate Change Hypothesis" cannot explain the K-T boundary.

LOL Katie. So you're telling me that the huge, crater of 85 km radius found off the coast of the Yucatán which models everything we would expect from an asteroid was actually a bunch of angels falling to earth?

A large Iridium rich asteroid impact that hit what is now The Yucatán Peninsula creating the 180km wide Chicxulub Crater, evidence of which is still found 65 million years later. The impact launched an enormous amount of debris into the atmosphere, enough to lay a layer containing large amounts (compared to normal earth geology) of Iridium around the entire globe (KT Boundary). The result of the impact would more than likely have been rapid and catastrophic climate change, resulting in a mass extinction event.

Probably the meteorite idea...

It is an odd extinction pattern; small mammals survive, crocodiles, turtles etc... survive, some small birds survive, but large-bodied land animals are wiped out, along with microscopic single-celled creatures in the ocean - these two extinction events make sense for a meteorite. A range of sea reptiles went extinct too, but it's possible thats got more to do with the loss of the shallow seas around the same time.

There's also some evidence that extinction rates were lowest in the southern hemisphere, around Antarctica - the exact opposite side of the world where the meteorite was supposed to have hit - so that makes sense.

Earth was hit by a large asteroid. The impact crater has been found in Mexico.

This event most likely led to a mass extinction.

There are more evidence for giant meteors... it's called K something zone...

Super volcanoes are also a factor in the extinction of dinosaurs, huge release of sulphur into the atmosphere

There is much evidence for giant meteor impact 65 millions years ago. I will accept that unless science proves different.

Meteor, dramatic climate change... take your pick.

I doubt it was a meteor. Climate change seems logical, though, since the dinos were lizards, and if it got cold they would have frozen to death.

IDK, though... we have very little evidence for any theories on how they died off. We only know that they went extinct.

Dino-flu

I think Lucifer and his legions of angels did when God had Michael the Archangel cast them all out of heaven. It created an enormous catastrophe when they hit the ground. Something like what would happen if a meteorite had struck the earth.

My logical side says, "meteor impact," while the snarky side says, "just another one of God's bad moods."

I know, I know. Thumbs down.

*sigh*