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Published in Sauropod Vertebra Picture of the Week
Author Mike Taylor
![](https://svpow.files.wordpress.com/2018/08/figure-a-different-kinds-of-horizontal.jpeg?w=480&h=261)
I was lucky enough to have Phil Mannion as one of the peer-reviewers for my recent paper (Taylor 2018) showing that Xenoposeidon is a rebbachisaurid. During that process, we got into a collegial disagreement about one of the autapomorphies that I proposed in the revised diagnosis: “Neural arch slopes anteriorly 30°–35° relative to the vertical”. (This same character was also in the original Xenoposeidon