Scientists show how dinosaurs had sex
http://www.dailymail.co.uk/sciencetech/article-2172128/The-joy-T-Rex-How-dinosaurs-sex-tricky-weigh-tonnes-crucial-12-feet-long.htmlDinosaur Sex - Hudson Valley Geologist
http://hudsonvalleygeologist.blogspot.com/2013/11/dinosaur-sex.htmlSe extinguieron, ...si, pero pusieron todo el esfuerzo en no desaparecer.