Vertebral orientation: Varanus komodoensis would like a word

September 25, 2018

I am still building up to a big post on vertebral orientation, but in the meantime, check out this caudal vertebra of a Komodo dragon, Varanus komodoensis. This is right lateral view–the vert is strongly procoelous, and the articular ends of the centrum are really tilted relative to the long axis. I find this encouraging, for two reasons. First, it helped me clarify my thinking on how we ought to orient vertebrae, which Mike wrote about here and here. And second, it gives me some hope, because if we can figure out why tilting your articular surfaces makes functional sense in extant critters like monitors, maybe we can apply those lessons to sauropods and other extinct animals.

This is LACM Herpetology specimen 121971. Many thanks again to Neftali Camacho for access and assistance, and to Jessie Atterholt for basically doing all the other jobs while I was faffing about with this Komodo dragon.

3 Responses to “Vertebral orientation: Varanus komodoensis would like a word”


  1. […] have blogged various thoughts about how to orient vertebra (part 1, part 2, relevant digression 1, relevant digression 2, part 3) and presented a talk on the subject at the 1st Palaeontological Virtual Congress, […]


  2. […] September the vertebral orientation discussion expanded to take in the Brachiosaurus holotype and Komodo dragons, and Mike blogged about imposter syndrome. The most personally satisfying event in September was […]


  3. […] a vertebra to be “horizontal”? That post and subsequent posts on the same topic (one, two, three) provoked interesting discussions in the comment threads, and convinced us that there was […]


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