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Pubblicato in Sauropod Vertebra Picture of the Week

This just in, from Zurriaguz and Powell’s (2015) hot-off-the-press paper describing the morphology and pneumatic features of the presacral column of the derived titanosaur Saltasaurus . (Thanks to Darren for bringing this paper to my attention.) Now, as everyone knows, titanosaurs don’t have epipophyses. In fact, they’re the one major sauropod group where Matt has not observed them. Until today.

Pubblicato in Sauropod Vertebra Picture of the Week
Autore Matt Wedel

The last time we talked about Alamosaurus, I promised to explain what the arrow in the above image is all about. The image above is a section through the cotyle (the bony socket of a ball-and-socket joint) at the end of one of the presacral vertebra.