X.-G. Zhang
Onychophoran-like musculature in a phosphatized Cambrian lobopodian
Zhang, X.-G.; Smith, M.R.; Yang, J.; Hou, J.-B.
Abstract
The restricted, exclusively terrestrial distribution of modern Onychophora contrasts strikingly with the rich diversity of onychophoran-like fossils preserved in marine Cambrian Lagerstätten. The transition from these early forebears to the modern onychophoran body plan is poorly constrained, in part owing to the absence of fossils preserving details of the soft anatomy. Here, we report muscle tissue in a new early Cambrian (Stage 3) lobopodian, Tritonychus phanerosarkus gen. et sp. nov., preserved in the Orsten fashion by three-dimensional replication in phosphate. This first report of Palaeozoic onychophoran musculature establishes peripheral musculature as a characteristic of the ancestral panarthropod, but documents an unexpected muscular configuration. Phylogenetic analysis reconstructs T. phanerosarkus as one of a few members of the main onychophoran lineage—which was as rare and as cryptic in the Cambrian period as it is today.
Citation
Zhang, X., Smith, M., Yang, J., & Hou, J. (2016). Onychophoran-like musculature in a phosphatized Cambrian lobopodian. Biology Letters, 12(9), Article 20160492. https://doi.org/10.1098/rsbl.2016.0492
Journal Article Type | Article |
---|---|
Acceptance Date | Aug 24, 2016 |
Online Publication Date | Sep 27, 2016 |
Publication Date | Sep 27, 2016 |
Deposit Date | Aug 22, 2016 |
Publicly Available Date | Mar 29, 2024 |
Journal | Biology Letters |
Print ISSN | 1744-9561 |
Electronic ISSN | 1744-957X |
Publisher | The Royal Society |
Peer Reviewed | Peer Reviewed |
Volume | 12 |
Issue | 9 |
Article Number | 20160492 |
DOI | https://doi.org/10.1098/rsbl.2016.0492 |
Publisher URL | http://rsbl.royalsocietypublishing.org/ |
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