2007-03-16 15:18:57 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
Pterodactyls, along with the dinosaurs, marine reptiles, and other groups of life, went extinct roughly 65 million years ago, at the end of the Cretaceous. The prevailing line of thought for the cause is that a 6 mile wide meteor hit the Earth--the resulting crater is believed to be Chicxulub, in the Yucatan Pennisula. The impact would have sent up a thick plume of debris, blocking out the sun for months, maybe even years. No sunlight, no plants; no plants, no plant-eaters, and so on. The Impact Theory is still debated, with some paleontologists believing that environmental change brought about the K-T extinction 65 million years ago, while others believe that dinosaurs and their kin where on the decline before the K-T boundary, but seeing as the only place where paleontologists can access a fossil-bearing formation that has numerous fossils from the end of the Cretaceous is in the Hell Creek Formation, there isn't much data to support the declining theory.
2007-03-16 15:42:37 · answer #1 · answered by pseudoangel80 1 · 2⤊ 0⤋
Pterodactyl Extinction
2016-12-17 14:02:24 · answer #2 · answered by Anonymous · 0⤊ 0⤋
a meteorite or however u spell it. im guessing their was barely any sunglight, killing the plants, then killing the animals who fed on it. there has to be a lot of plants to fill an animal of that size, thus killing it.
2007-03-16 18:14:43 · answer #3 · answered by Adriana 2 · 1⤊ 0⤋
Ummmm...they all died off? Could that be the reason they are now extinct? Hmmmm?
2007-03-16 15:24:02 · answer #4 · answered by dragondave187 4 · 0⤊ 2⤋
the same way other dinosuars in that era did...there are a couple of assumptions but no one is certain how they actually they were wiped out.
2007-03-16 15:23:22 · answer #5 · answered by richard_so2001 2 · 0⤊ 1⤋