RT Journal Article
T1 First confident evidence of moulting in eodiscid trilobites from the Cambrian Stage 3 of South China
A1 Wang, Yifan
A1 Esteve Serrano, Jorge Vicente
A1 Yang, Xinglian
A1 Yu, Rongxing
A1 Wang, Dezhi
AB Trilobite moulting behaviour has been extensively investigated. However, exuviae in eodiscid trilobites are poorly known. Here, we report two eodiscid trilobite specimens, Tsunyidiscus niutitangensis and Tsunyidiscus sp., showing Somersault configuration from the Niutitang Formation and Mingxinsi Formation of South China, respectively (Cambrian Series 2, Stage 3). The arrangements of the exoskeletons indicate that the two specimens are the slightly disturbed and undisturbed exuviae. The impression of the lower cephalic unit (LCU) displays the rostral plate in Tsunyidiscus niutitangensis. The exuviae showing the LCU inverted anteriorly under the trunk. The opening of the facial and rostral sutures would have allowed the emergence of the post-ecdysial trilobite with the partial enrolment of exoskeleton. Moreover, our discovery indicates a Somersault configuration which employed the facial and rostral sutures to create an anterior exuvial gape that also exists in eodiscid trilobites besides redlichiid trilobites, corynexochid trilobites and ptychopariid trilobites during the Cambrian.
PB Cambridge University Press
SN 0016-7568
YR 2023
FD 2023
LK https://hdl.handle.net/20.500.14352/88551
UL https://hdl.handle.net/20.500.14352/88551
LA eng
NO Wang, Yifan, et al. «First Confident Evidence of Moulting in Eodiscid Trilobites from the Cambrian Stage 3 of South China». Geological Magazine, vol. 160, n.o 8, agosto de 2023, pp. 1441-45. DOI.org (Crossref), https://doi.org/10.1017/S0016756823000584.
NO National Sciences Foundation of China
NO Guizhou Bureau of Science and Technology
NO China Scholarship Council
NO Chinese Academy of Sciences
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 24 abr 2025