All About Dinosaurs its Friday

[Troodon]

Collectors talk about the small arms of T. rex, but have you seen the arms of Carnotaurus? The entire arm was vestigial and likely useless. Right to left, weird humeri, radius-ulna, and metacarpals-phalanges.

 

Image and tech info by João Vasco Leite

 

 

 

Holotype skull of Utah's first big tyrannosaurid, holotype of Tetratophoneus as displayed at Brigham Young University. vs U of U's prepped skull from Utah's most perfectly complete tyrannosaurid skeleton; both Kaiparowits Fm

Provided by Jim Kirkland

 

 

Did you know that Ceratosaurus a theropod had osteoderms?

These lumpy bumps may not look like much, but they are super cool! You are looking at osteoderms that lined the back of the horn-snouted Jurassic theropod Ceratosaurus.  Info and photo by Scott Persons

 

 

 

Did you know that theropod anatomy makes it pretty much impossible to turn hands palm down

 

Make sure you have volume turned up.

 

Growth series of Allosaurus femora

 

from the Cleveland-Lloyd Dinosaur Quarry,

Photo by Oliver Demuth

 

 

Here are the bones of Hadrosaurus foulkii on display at the Philadelphia Academy of Natural Sciences

This was the first partially-coseemplete dinosaur skeleton ever found, and the first dinosaur skeleton ever mounted for display- by Benjamin Waterhouse Hawkins..  Nice place to visit if youre in Philadelphia.

 

 

Everyone talks about the spines "sail" on Spinosaurus check out the display of Amargasaurus a sauropod from the Museum in Patagonia. Cool cervical neural spines.

Photo by Serjoscha Evers

 

 

 

Here are teeth from Dicraeosaurus teeth a diplodocoid sauropod dinosaur from Tanzania. The one on the far right is erupted and worn down whereas the other three are unworn replacement teeth.  Photo from Amy Campbell

 

 

 

 

 

[ynot]

That is so cool!

Thanks for posting these interesting tidbits!

[Oxalaia]

Could theropods curl with palms up?

[CBchiefski]

1 hour ago, Oxalaia said:

Could theropods curl with palms up?

Based on the physical and biomechanical limitations of the arms and "wrist" this is not likely possible for most theropods but of course, there could be a few which were able to make the motion required. 

Edited March 29, 2019 by CBchiefski
clarity