Journal
SCIENCE OF NATURE
Volume 102, Issue 5-6, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00114-015-1285-4
Keywords
Polychaete; Annelida; Guanshan Biota; Lower Cambrian
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Funding
- 973 project of the Ministry of Science and Technology of China [2013CB837100]
- National Natural Science Foundation of China [41222014, 41172023, 41102012, 41272011, 41272019, 41372021]
- National Program for Support of Top-notch Young Professionals
- Ministry of Education of China
- Program of Introducing Talents of Discipline to Universities [P201102007, W20136100061]
- Shaanxi Bureau of Science and Technology [FJ11366]
- young talents of Northwest University, Program for New Century Excellent Talents in University [NCET-13-1008]
- Fundamental Research Funds for the Central Universities [2010ZY07, 2011YXL013, 2012097]
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We herein report a fossilized polychaete annelid, Guanshanchaeta felicia gen. et sp. nov., from the Lower Cambrian Guanshan Biota (Cambrian Series 2, stage 4). The new taxon has a generalized polychaete morphology, with biramous parapodia (most of which preserve the evidence of chaetae), an inferred prostomium bearing a pair of appendages, and a bifid pygidium. G. felicia is the first unequivocal annelid reported from the Lower Cambrian of China. It represents one of the oldest annelids among those from other early Paleozoic Lagerstatten including Sirius Passet from Greenland (Vinther et al., Nature 451: 185-188, 2011) and Emu Bay from Kangaroo island (Parry et al., Palaeontology 57: 10911103, 2014), and adds to our increasing roll of present-day animal phyla recognized in the early Cambrian Guanshan Biota. This finding expands the panorama of the Cambrian 'explosion' exemplified by the Guanshan Biota, suggesting the presence of many more fossil annelids in the Chengjiang Lagerstatte and the Kaili Biota. In addition, this new taxon increases our knowledge of early polychaete morphology, which suggests that polychaete annelids considerably diversified in the Cambrian.
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