DPS Ammonite Posted May 16, 2018 Share Posted May 16, 2018 Poisonous angiosperms might has caused the dinosaur extinctions because they could not taste the poisons in the plants. Warning, do not suffer the same fate; do not eat large amounts of spinach. http://www.techtimes.com/articles/224517/20180405/turns-out-dinosaurs-were-killed-off-by-flowers-then-the-asteroid-put-the-nail-in-the-coffin.htm 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
David in Japan Posted May 17, 2018 Share Posted May 17, 2018 Interesting theory but the article is full of "mistakes". When one can read that "Researchers also ran tests on the modern descendants of dinosaurs: bird and crocodiles." you can doubt on the article credibility or the study credibility. 1 ~~~~~~~~~~~~〇~~~~~~~~~~~~~ Warmest greetings from Kumamoto、 Japan Link to comment Share on other sites More sharing options...
Kane Posted May 17, 2018 Share Posted May 17, 2018 A 145 lb person can eat up to 7 lbs of spinach per day and not reach toxicity levels for oxalic acid. 2 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
FossilDAWG Posted May 17, 2018 Share Posted May 17, 2018 The poisonous plant idea has been around for a long time, I remember reading a version of it 25-30 years ago. It never made any sense to me. First, it assumes dinosaurs were not capable of responding to natural selection, and so failed to evolve detoxification systems to metabolize and excrete toxins in their diet, or sensory systems to avoid toxic plants. This makes no sense to me. Secondly, it fails entirely to explain simultaneous mass extinctions in terrestrial and marine ecosystems. How mosasaurs and ammonites could be exterminated by toxic mangos is a mystery to me. Don 4 Link to comment Share on other sites More sharing options...
doushantuo Posted May 17, 2018 Share Posted May 17, 2018 here Winffney 1987 RevPP.pdf (about 2,8 Mb and ,excuse the pun,"food for thought") 4 Link to comment Share on other sites More sharing options...
siteseer Posted June 23, 2018 Share Posted June 23, 2018 On May 16, 2018 at 7:33 PM, FossilDAWG said: The poisonous plant idea has been around for a long time, I remember reading a version of it 25-30 years ago. It never made any sense to me. First, it assumes dinosaurs were not capable of responding to natural selection, and so failed to evolve detoxification systems to metabolize and excrete toxins in their diet, or sensory systems to avoid toxic plants. This makes no sense to me. Secondly, it fails entirely to explain simultaneous mass extinctions in terrestrial and marine ecosystems. How mosasaurs and ammonites could be exterminated by toxic mangos is a mystery to me. Don Hi Don, I'm seeing this for the first time now and have always thought the same thing. The "poisoned by plants" idea was debunked a long time ago for the reasons you note. It was one of those ideas that people were thinking about but not thinking through before 1980. Jess 1 Link to comment Share on other sites More sharing options...
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