Following in the footsteps of Prehistoric Planet is an upcoming documentary named T-Rex. Which plans to put the most recognizable yet misunderstood dinosaur in a spotlight that allows people to understand it for the animal it was and not the monster it is.
Is there a known reason or possible explanation/s for why the Carnotaurs and other abelisaurs evolved even shorter arms than T-Rex's?
So, the muscles in the neck area, as a rule, get really buff when theropods become large predators - it happened in Abelisaurs, it happened in Allosauroids, it happened in Megalosaurs, it happened in Tyrannosaurs. This is because, as the animal gets bigger, it tends to interact with prey and the environment more with its mouth and jaws than with its arms, because the mouth and jaws are more powerful and efficient. The musculature in the neck region directly conflicts with musculature in the upper arm for space, as they are next to each other. As such, as the muscles in the neck grow, the muscles in the arm shrink. This leads to a corresponding shrink of the arms in these large predators. In each line, if they had continued to evolve, they may have lost their arms a la Moas.
Abelisaurs, however, kept their tiny arms, and what's weird, is that the arm is attached to a completely 360 degree rotational socket, unlike the sockets the rest of us have at the arm. As such, they were able to wiggle and move them a LOT. This leads researchers to think that they were used, specifically, for display.
Remember everyone: every single dinosaur, every single one, is a variation of the peafowl.
This Fossil Friday is a blast from the past! Snapped circa 1988, this photo depicts Tyrannosaurus rex and Triceratops on display in the Museum’s Hall of Late Dinosaurs. These iconic dinosaurs are still on display at the Museum, but they now sit in separate halls. You can find T. rex in the Hall of Saurischian Dinosaurs—saurischians are characterized by grasping hands, in which the thumb is offset from the other fingers. Triceratops is in the Hall of Ornithischian Dinosaurs, which displays dinosaurs that are characterized by a backward-pointing extension of the pubis bone. This bone was thought to have helped support the enormous stomachs that these animals needed to digest masses of tough vegetation!
Daspletosaurus species study - Impressions of the three species of the Tyrannosaur genus Daspletosaurus, which lived in Laramida 78-74 million years ago
Tyrannosaurus Rex perishing from poisonous gasses released from the earth's crust in Animal Ghosts. Edited by Claudia Clow. Illustrated by Walt Disney Productions. 1971.
We've got some really cool stuff to share and it would mean a lot for our little museum if y'all stopped by and gave it a look.
The whole broadcast will be 45 minutes, part of which is a live Q&A with seasoned paleontologists and a look into collections with some fossils to show off! A lot of my work will be showcased here as well as things I've discovered and helped dig up.
Featuring curator Dr. Denver Fowler, Dr. Liz Freedman Fowler, Steven Clawson, and Amanda Hendrix; to learn about some of the great new discoveries made by our field crews this summer.
The livestream will be via Facebook and will be archived on Facebook and YouTube.
Wow T. Rex is really the elephant of the Tyrannosaurus family, isn't it?
Because it does seem like it's smaller relatives have feathers but well not Tyrannosaurus rex. Makes sense, considering the climate it lived in and the larger than average size. Like the adults probably had to lose their feathers or they'd honestly roast.
Bistahieversor, a tyrannosauroid dinosaur, differs from other tyrannosaurs in that it possesses 64 teeth, an extra opening above the eye, a keel along the lower jaw, and a complex joint at its forehead, among other unique traits. The dinosaur, discovered in 1990, was originally thought to be an Aublysodon, then a new species of Daspletosaurus, before being assigned its own species, Bistahieversor sealeyi, in 2010.