rex into different species, because there is some variation in the fossil bones that we have. “I understand the temptation to divide T. However, other paleontologists disagreed with the findings. The differences were “subtle,” similar to how “skeletons of lion (Panthera leo) and tiger (Panthera tigris) are hard to tell apart even among experts,” he said. Not much,” said study author Gregory Paul, the author of “The Princeton Field Guide to Dinosaurs.” It would be like the difference between being attacked by a lion or tiger. “All three species were 6-7 tonnes with similar skulls and bodies. rex was not a single, unchanging dinosaur but may have had two equally terrifying sibling species. They also measured the base of the teeth or space in the jaw to understand if 12 of the dinosaurs had one or two slender incisor teeth. The researchers compared the length and circumference of the femur, or thigh bone, of 24 T. rex jaws have a single D-shaped incisor that is substantially smaller than the next tooth, while others have two of these smaller D-shaped teeth. Other differences include its banana-size teeth – some T. Alternatively, it could be explained by developmental stages, or simply individual variation in traits. rex perhaps more petite than their male counterparts. This had been explained by sex differences – with female T. The study, published in the journal Evolutionary Biology, said it had long been recognized that the “stoutness” of adult Tyrannosaur skeletons varied considerably. rex specimens suggests that the dinosaur might need to be regrouped into three separate species – with the fearsome predator that lived 90 million to 66 million years ago potentially getting two sibling species: tyrant lizard queen and tyrant lizard emperor. 'Exceedingly rare' fossil of giant flying reptile discovered on Scottish islandĪ new analysis of the bones and teeth of 37 T. Removing skeleton from beach University of Edinburgh
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |