Internal conulariid structures unveiled using µCT
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2023-03-30
Submitted Date
2022-05-31
Subject Terms
conulariid
internal structure
soft parts
Pennsylvanian
Texas
Oklahoma
µCT
Scyphozoa
Coronatae
internal structure
soft parts
Pennsylvanian
Texas
Oklahoma
µCT
Scyphozoa
Coronatae
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Abstract
Abstract
An extensive sample of well-preserved conulariids from the Pennsylvanian of the North American Midcontinent (Texas and Oklahoma, USA) have been studied using X-ray micro-Computed Tomography (µCT) and have shown structures identified as longitudinal muscle bundles and a potential gastric cavity. These unequivocal structures appear in several specimens coming from different sites. Their preservation varies from a gastric cavity with muscle bundles in some individuals to only longitudinal muscle bundles in others. The muscle bundles fuse apically or medially, normally forming V-shaped pairs, and they extend along the theca/exoskeleton, parallel to the corner, towards the aperture. Longitudinal bundles have predominant perradial positions. Although there have been some articles on conulariid soft parts, most of them refer to relic soft parts. This is the first time that these structures are shown using µCT. Discovery of conulariid soft parts contributes to knowledge of metazoan evolutionary history.
Citation
Sendino, C., Clark, B., Morandini, A.C. et al. Internal conulariid structures unveiled using µCT. PalZ 97, 451–467 (2023). https://doi.org/10.1007/s12542-023-00649-7
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Copyright © Crown 2023. 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. The linked file is the published version of the article.
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0031-0220
EISSN
1867-6812