A new species of the deuterostome Herpetogaster from the early Cambrian Chengjiang biota of South China
- PDF / 3,486,913 Bytes
- 8 Pages / 595.276 x 790.866 pts Page_size
- 69 Downloads / 221 Views
ORIGINAL PAPER
A new species of the deuterostome Herpetogaster from the early Cambrian Chengjiang biota of South China Xianfeng Yang 1,2 & Julien Kimmig 3,4
&
Bruce S. Lieberman 3,5 & Shanchi Peng 2,6
Received: 14 April 2020 / Revised: 27 July 2020 / Accepted: 19 August 2020 # The Author(s) 2020
Abstract The Cambrian radiation represents a key time period in the history of life. Here, we add to the mounting evidence accumulating on the nature of deuterostomes from this time period through description of a new species of stalked deuterostome, Herpetogaster haiyanensis nov. sp., from the lower Cambrian (series 2, stage 3) Chengjiang biota of China. This represents the first occurrence of the genus in Gondwana, the first juvenile specimen, and the oldest specimens to date. Herpetogaster haiyanensis nov. sp. differs from H. collinsi Caron et al. (2010) in having a stolon that is separated into an outer and inner layer, the segmentation of the body and in the shape and number of branches of the tentacles. The new species reiterates earlier suggestions of deuterostome affinities of the genus―it appears closely related to Phlogites and then successively more distantly related to Cotyledon and Eldonia―and may have fed on hyolithids. Keywords Burgess Shale-type preservation . Deuterostomes . Cambrian . Chengjiang biota . Chiungchussu Formation . Haiyan . Stalked filter feeder
Introduction The lower Cambrian (series 2, stage 3) Chengjiang biota of China is an exceptionally diverse Burgess Shale-type (BST) Communicated by: Julien Denayer * Xianfeng Yang [email protected] * Julien Kimmig [email protected] 1
Yunnan Key Laboratory for Palaeobiology, MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment, Yunnan University, Kunming 650091, China
2
State Key Laboratory of Palaeobiology and Stratigraphy, Chinese Academy of Sciences, Nanjing 210008, China
3
Biodiversity Institute, University of Kansas, Lawrence, KS 66045, USA
4
Earth and Mineral Sciences Museum & Art Gallery, Pennsylvania State University, University Park, PA 16802, USA
5
Department of Ecology & Evolutionary Biology, University of Kansas, Lawrence, KS 66045, USA
6
Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China
deposit that has been critical for illuminating the origin and evolution of many animal phyla, especially arthropods (Caron et al. 2014; Hou et al. 2017; Kimmig 2019). While arthropods, both soft-bodied and biomineralized, dominate the deposit, members of many modern phyla have also been reported; further, in many instances, these represent the first appearances of these phyla in the fossil record (Hou et al. 2017). The composition of the Chengjiang biota is similar to the middle Cambrian (Miaolingian; Wuliuan) Burgess Shale Lagerstätte of Canada, and previous research has shown that there are ecological and taphonomic similarities between the two deposits (Conway Morris 1986; Gabbott et al. 2004; Dornbos and Chen 2008; Caron et al. 2013, 2014; Zhao et al. 2014; Saleh et al
Data Loading...
