Tyrannosauroids—the group of carnivores includingTyrannosaurs rex—are some of the most familiar dinosaurs of all. A surge of recent discoveries has helped clarify some aspects of their evolution, but competing phylogenetic hypotheses raise questions about their relationships, biogeography and fossil recor...
1,2 Their traces are even found on a few isolated oceanic islands, such as Spitsbergen3 and North Island, New Zealand.4Besides Antarctica and Spitsbergen, dinosaurs have been dug up from other high latitude or inferred high palaeolatitude locations.5 For instance, they have been unearthed ...
Senile vertebrates are extremely rare in the fossil record, making their recognition difficult. Here we present the largest known representative of the Late Cretaceous hadrosauriform Gobihadros mongoliensis showing features of cessation of growth indicat
Teaching about dinosaurs is also a great way to introduce kids to the sciences, likepaleontology, which enhances thinking about biology, evolution and scientific thinking. Believe it or not, dinosaurs are also the perfect way to talk about modern issues, such as the consequences of massextinction...
Dinosaurs V. Mammals: SCOUG Retreat Celebrates EvolutionEver since the first end-user system darkened the horizon, information intermediaries have...Feldman, SusanEbbinghouse, CarolSearcher
'' said Goodwin ``They would have killed each other, and a couple of bowling balls would hardly make good targets.'' It is more likely that Pachycephalosaurus butted other animals sides (flank-butting), rather than their heads. This would inflict damage on the other animal and not injure ...
and over a century later, in 2010, it was reassigned to the even more obscure genus Hypselospinus. Finally, in 2012, the paleontologist and illustrator Gregory Paul decided that this dinosaur's type fossil was distinctive enough to merit its own genus and species,Darwinsaurus evolutionis, thoug...
Psittacosaurusintegument was first reported in a subadult individual ofP.mongoliensis(AMNH FARB 6260; see the list of institutional abbreviations in Supplementary Note1) by Sereno26(p. 248) on the plantar surface of the right pes (metatarsals I-IV). The reticulate scales were described as ...
Within these pages, readers will learn how the diet works, how they can follow it to improve their own health and lose weight, and how they can diagnose their own blood pH levels at home. With a comprehensive list of the best... C Maria Blanco 被引量: 1发表: 2013年 Body Weight Cont...
Scientists have assembled a slew of new forensic evidence – from high-resolution dates to microscopic fossils – to prosecute the dino-killer. Their indictment has worrying implications for us.