A new paper:
Free pdf:
https://palaeo-electronica.org/content/pdfs/1550.pdfCarnegie Museum of Natural History houses some of the most important specimens for our understanding of diplodocoid sauropod cranial anatomy. One specimen (CM 26552), a braincase and partial skull roof, is often overlooked in favor of more complete skulls, but bears an outsized historical importance as this specimen formed the basis for the modern description of braincase anatomy for Diplodocus as a genus. In light of several decades of new discoveries since the original description by Berman and McIntosh in 1978, here we re-evaluate the anatomy and taxonomic relationships of this specimen. We find that CM 26552 is a distinct not only from Diplodocus but also from the larger grouping Diplodocidae entirely, and is instead best regarded as a new genus of dicraeosaurid sauropod.
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