October 12, 2025Open Access

OMNH 1330, another big apatosaurine caudal

MWMatt WedelCentre National de la Recherche Scientifique

Key Points

The vertebra OMNH 1330 is likely a 4th caudal due to its size and shape.
Distinctive features include a prominent transverse process and large pneumatic chambers near the neural canal.
This identification may have implications for understanding the classification and anatomy of apatosaurines.
Further examination could clarify the exact position of this vertebra within caudal series.

Abstract

Here's OMNH 1330, another vertebra from the big Oklahoma apatosaurine.Based on the size and shape of the transverse process, and the large pneumatic chambers on either side of the neural canal, I think this is probably a 4th caudal, but it could plausibly be a 3rd or a 5th.

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Cite This Study

Matt Wedel (Sun,) studied this question.

synapsesocial.com/papers/68eb6f7ceea689731b300591 https://doi.org/https://doi.org/10.59350/jbwr5-svg97

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