The pneumatic tail of the Field Museum apatosaurine, FMNH P25112
March 2, 2018
Left side, posterolateral oblique view, wide shot.
Same thing, close up.
Right side, lateral, wide.
Same thing, close up.
For more on this and other pneumatic sauropod tails, please see Wedel and Taylor (2013, here). And for more on the currently unresolved taxonomic status of FMNH P25112, see this post.
Sauropod Vertebra Picture of the Week 
February 15, 2021 at 7:58 am
[…] to the transverse processes–the mounted one at the Field Museum is a good example (see this post). And the big Oklahoma apatosaurine breaks the rules by having very pneumatic caudals–more on […]