Talk:Controversies in Science/What killed the dinosaurs/A Critique of Environmental versus genetic sex determination: a possible factor in dinosaur extinction?

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With global warming, only one sex of dinosaurs would have been hatched so as the males or females began to dominate, no or few breeding could take place, eventually causing the extinction of dinosaurs Patricia D B (talk) 01:57, 3 October 2012 (UTC)[reply]

One thing that this doesn’t mention is how the climate change occurred, and without much information on Temperature-Dependent sex determination (TDS) I am easily persuaded. The point that I would like to make is that the climate change occurred because of the meteoroid. It is known that the meteoroid drew a large cloud of smoke that blocked out the sun, this causing extinction to the dinosaurs. Now the way that they died may vary; because I believe that without the sun no vegetation could have grown thus killing the dinosaurs. Another could be this TDS prediction; however the main point that I would like to make is that yes there was a meteoroid and yes it was the cause of the dramatic climate change. Asmit (talk) 02:12, 3 October 2012 (UTC)[reply]

Dozens of volcanoes erupting at once would have produced more smoke and more carbon then one meteorite. This is the reason for the blocking out of the sun, the vegetation dying, and the increase in males being hatched from eggs. Without food or two sexes two breed, a species will die. The meteorite did not kill of the vegetation, archaeologists have found fossils of plantation from the dinosaur dating back 300,000 years after the meteorite hitPatricia D B (talk) 02:19, 3 October 2012 (UTC)[reply]

Personally I am doubtful that dinosaurs had TSD, or if they did that this caused their extinction. Recent evidence suggests that the climate changes caused by meteor impact in the Carribean area would have been devastating and caused significant change, much of which in the first few weeks after the impact. Much too fast. Species with TSD have been shown to be capable of reversing this and going back to GSD hence given time it would not be a factor. TSD would seem to be a recent development and mostly in ectotherms only, there is evidence that dinosaurs were not ectotherms, certainly their modern relatives, biirds, are not. Cheers Scott Thomson (Faendalimas) talk 19:44, 26 November 2019 (UTC)[reply]
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