AbstractNewly recovered palaeoscolecid cuticle fragments in 3-D preservation from the Furongian (upper Cambrian) of Hunan Province, South China are reported. Two form new genera and two form new species, Hunanoscolex campus gen. et sp. nov. and Ornatoscolex hunanensis gen. et sp. nov. are described. Most of the specimens are juvenile individuals. The great variation of annulus width in Hunanoscolex campus indicates growth of the worm, which allows us to examine the growth impact on the worm cuticle. The worm grows by adding more sclerites to each annulus. The spacing of plates in the same row gets looser. The new microplates and platelets remain constant in size and ornamentation but the ornamentation of plate may change. These observations give better understanding of the intraspecific variation of the worm cuticle, and may enhance the taxonomy accuracy of palaeoscolecid cuticle fragments.
Received 25 June 2012
Published 20 July 2013
Cite this article
DUAN Baichuan,DONG Xiping. Furongian (Late Cambrian) Palaeoscolecid Cuticles from Hunan Province, South China: the Growth Impact on the Worm Cuticle[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2013, 49(4): 591-602.