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. 2020 Jan 10;11:205. doi: 10.1038/s41467-019-13882-z

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — a Light image of entire specimen (sample USNM-WCF_001) in plan-view, specimen partially obscured at rock surface. b Corresponding 3D volume render, showing soft tissue (orange) and tube wall (gray); boxes d, e are marked in both a, b to help guide slight differences in orientation. c Close-up view of labeled box in a, highlighting funnel rims (arrows) on external tube. d Close-up view of labeled boxes in a, b, 3D volume render showing partial soft tissue and funnel rims (arrows); d largely overlaps with c, but includes also host rock encased portion of the fossil. e Partial soft tissue from labeled boxes in a, b. f Cross-sectional view of e showing relative position of soft tissue that has settled to the bottom of the external tube wall. Sample reposited at the Smithsonian Institution. All scales = 2 mm.