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. 2017 Mar 30;7:45539. doi: 10.1038/srep45539

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Copyright © 2017, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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(A) Bivariate scatterplot of in situ specimens (N = 93) of Parvancorina minchami; different symbols correspond to numbered quadrants in (C). (B) Principal Components Analysis plot of P. minchami (N = 57). (C) Orientations of in situ specimens of P. minchami, with reconstruction showing direction of measurement. (D) Orientations of tool marks. (E) Orientations of felled frond stalks. Rose plots divided into 10° bins, showing vector mean (VM) direction; bin counts are not the same scale across plots.