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Cited by 12Paleontology and Stratigraphy of FossilsPaleontology and Evolutionary BiologyEvolution and Paleontology Studies

Furongian (Jiangshanian) occurrences of radiodonts in Poland and South China and the fossil record of the Hurdiidae

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Zhu, Xuejian, Lerosey-Aubril, Rudy, Ortega-Hernández, Javier·2021·PeerJ
DOI 10.7717/peerj.11800PMC PMC8312493
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Abstract

The Furongian period represents an important gap in the fossil record of most groups of non-biomineralizing organisms, owing to a scarcity of Konservat-Lagerstätten of that age. The most significant of these deposits, the Jiangshanian strata of the Sandu Formation near Guole Township (Guangxi, South China), have yielded a moderately abundant, but taxonomically diverse soft-bodied fossil assemblage, which provides rare insights into the evolution of marine life at that time. In this contribution, we report the first discovery of a radiodont fossil from the Guole Konservat-Lagerstätte. The specimen is an incomplete frontal appendage of a possibly new representative of the family Hurdiidae. It is tentatively interpreted as composed of seven podomeres, six of which bearing laminiform endites. The best preserved of these endites is especially long, and it bears short auxiliary spines that greatly vary in size. This is the second occurrence of hurdiids and more generally radiodonts in the Furongian, the first being the external mould of an oral cone from Jiangshanian strata of the Wiśniówka Sandstone Formation in Poland. Restudy of this Polish specimen confirms that it belongs to a hurdiid radiodont and best compares to Peytoia. The family Hurdiidae includes the oldest (basal Cambrian Epoch 2) and youngest (Early Ordovician, possibly Early Devonian) representatives of the Radiodonta and as such, has the longest stratigraphical range of the group. Yet, hurdiids only became prominent components of marine ecosystems during the middle Cambrian (Miaolingian), and their fossil record in younger strata remains limited.

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  • The easy recognition of euarthropod and radiodont fossil fragments to existing or new genera may account for the lower degree of preservation observed within these groups because most fossil fragments will be deprived of internal organs, resulting in data entry without the most labile parts.

    “The easy recognition of euarthropod and radiodont fossil fragments to existing or new genera (Zhu, Lerosey-Aubril & Ortega-Hernández, 2021) may account for the lower degree of preservation observed within these groups because most fossil fragments will be deprived of internal organs, resulting in data entry without the most labile parts (Figs. 3A and 3B).”

    From Probability-based preservational variations within the early Cambrian Chengjiang biota (China) (2022) · cites this paper as Zhu, Lerosey-Aubril & Ortega-Hernández, 2021

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Authors
Zhu, X., Lerosey-Aubril, R., & Ortega-Hernández, J.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Harvard University, Department of Organismic and Evolutionary Biology and Museum of Comparative Zoology, Cambridge, MA, USA
Corresponding author
Zhu, Xuejian
ORCID
Zhu, Xuejian
Venue
PeerJ
Publisher
PeerJ
Published
2021-07-23
Volume
9
Pages
e11800
ISSN
2167-8359 (ISSN-L)
DOI
10.7717/peerj.11800
PMC
PMC8312493
OpenAlex
W3186711204
Cited by
12
References
5
Citations by year
2025: 2 · 2024: 1 · 2023: 5 · 2022: 4
FWCI
1.88
Type
journal article
Language
en
Open access
Licence
Locations
  • PeerJ (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Harvard Open-Access Publishing Equity (HOPE) Fund
  • National Science Foundation of China (41672002, 41672028, 40602002)
  • Strategic Priority Research Program of Chinese Academy of Sciences
  • State Key Laboratory of Palaeobiology and Stratigraphy (XDB26000000)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
Keywords
Furongian, frontal appendages, podomeres, endites, soft-bodied fossils, Cambrian-Ordovician transition, fossil record, Poland, South China

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