A new chancelloriid from the Emu Bay Shale (Cambrian Stage 4) of South Australia

Hao Yun, Glenn A. Brock, Xingliang Zhang, Luoyang Li, Diego C. García-Bellido, John R. Paterson

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Chancelloria australilonga sp. nov. is described from the Emu Bay Shale (Cambrian Series 2, Stage 4) of Kangaroo Island, South Australia. The new species has a typical sac-like body, equipped with a meshwork of dozens of distinctive rosette-like sclerites. Each sclerite comprises one central ray and six or seven lateral rays, and is characterized by a pair of remarkably long and subparallel adapical rays. Chancelloria australilonga is one of the few chancelloriid species preserved with an apical orifice with an obvious peripheral tuft. The tuft consists of a series of single-rayed sclerites with inflated bases. The preservation of the specimens, coupled with sedimentological information and their general rarity in the Emu Bay Shale, suggests short-distance transport and subsequent deposition in a nearshore, low-oxygen preservational trap. Additionally, the known distribution of chancelloriids in the well-documented Konservat-Lagerstätten representing a variety of sedimentary environments, indicates that chancelloriids, especially the genus Chancelloria, were likely adapted to an extensive range of habitats.

LanguageEnglish
Pages857-867
Number of pages11
JournalJournal of Systematic Palaeontology
Volume17
Issue number13
Early online date28 Jan 2019
DOIs
Publication statusPublished - 3 Jul 2019

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sclerite
shale
rarity
new species
oxygen
habitat

Keywords

  • Chancelloria
  • scleritome
  • Lagerstätte
  • Cambrian
  • East Gondwana

Cite this

Yun, Hao ; Brock, Glenn A. ; Zhang, Xingliang ; Li, Luoyang ; García-Bellido, Diego C. ; Paterson, John R. / A new chancelloriid from the Emu Bay Shale (Cambrian Stage 4) of South Australia. In: Journal of Systematic Palaeontology. 2019 ; Vol. 17, No. 13. pp. 857-867.
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abstract = "Chancelloria australilonga sp. nov. is described from the Emu Bay Shale (Cambrian Series 2, Stage 4) of Kangaroo Island, South Australia. The new species has a typical sac-like body, equipped with a meshwork of dozens of distinctive rosette-like sclerites. Each sclerite comprises one central ray and six or seven lateral rays, and is characterized by a pair of remarkably long and subparallel adapical rays. Chancelloria australilonga is one of the few chancelloriid species preserved with an apical orifice with an obvious peripheral tuft. The tuft consists of a series of single-rayed sclerites with inflated bases. The preservation of the specimens, coupled with sedimentological information and their general rarity in the Emu Bay Shale, suggests short-distance transport and subsequent deposition in a nearshore, low-oxygen preservational trap. Additionally, the known distribution of chancelloriids in the well-documented Konservat-Lagerst{\"a}tten representing a variety of sedimentary environments, indicates that chancelloriids, especially the genus Chancelloria, were likely adapted to an extensive range of habitats.",
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A new chancelloriid from the Emu Bay Shale (Cambrian Stage 4) of South Australia. / Yun, Hao; Brock, Glenn A.; Zhang, Xingliang; Li, Luoyang; García-Bellido, Diego C.; Paterson, John R.

In: Journal of Systematic Palaeontology, Vol. 17, No. 13, 03.07.2019, p. 857-867.

Research output: Contribution to journalArticleResearchpeer-review

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