Cited by 90Paleontology and Stratigraphy of FossilsPaleontology and Evolutionary BiologyProtist diversity and phylogeny

New microfossils from the neoproterozoic (Sinian) Doushantuo Formation, Wengan, Guizhou Province, southwestern China

Xunlai, Yuan, Hofmann, H.J.·1998·Alcheringa: An Australasian Journal of Palaeontology

Abstract

Well-preserved, three-dimensional microfossils are reported from a 3.7 m thick black phosphorite bed in the Sinian Doushantuo Formation at Wengan Phosphate Mine, Guizhou Province, southwest China. The diverse assemblage, observed in thin sections, comprises planktonic acritarchs, benthic cyanobacteria, bacteria, and thallophytes. Twenty one taxa are recognized, including 1 new genus and 4 new species. Acritarchs include Baltisphaeridium rigidum sp. nov., Vulcanisphaera phacelosa sp. nov., Comasphaeridium magnum Zhang 1984, Cymatiosphaeroides yinii sp. nov., Dicrospinasphaera zhangii gen. et sp. nov., Echinosphaeridium maximum (Yin, 1987) Knoll, 1992, Ericiasphaera sp., ?Ericiasphaera sp., Hocosphaeridium scaberfacium Zang & Walter, 1992, Meghystrichosphaeridium sp., Meghystrichosphaeridium wenganensis Chen & Liu, 1986, Polyhedrosphaeridium sp. The cyanobacteria and bacteria comprise Paratetraphycus giganteus Zhang, 1984, Gloeodiniopsis lamellosa (Schopf, 1968) Knoll & Golubic, 1979, Globophycus sp., Myxococcoides sp., type A, Siphonophycus rugosum (Maithy, 1975) Hofmann & Jackson, 1994, Siphonophycus robustum (Schopf, 1968) Knoll, Swett & Mark, 1991, Gunflintia sp., and a rod-like bacterium (type B). At least 6 distinctive acritarch taxa from the black phosphorite bed are also represented in the Pertatataka assemblage reported by Zang & Walter (1992) in the Amadeus Basin of central Australia, suggesting a biostratigraphic correlation with the Pertatataka Formation, which underlies strata containing Ediacaran metazoans and overlies Varangerage glacial sediments. Abundant bacteria-like coccoids and filaments preserved in the vesicles of many acritarch specimens attest to the presence of a thriving microbiota of decomposers within dead acritarchs, and a specimen of Thallophyca ramosa Zhang 1989 has well-preserved reproductive structures that comparable with those of the modern rhodophyte Bangia and the phaeophyte Fucus.

Integrity signals

Registry

Crossref · 10.1080/03115519808619200

Cites

34 of 34 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

1 of the 35 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Xunlai, Y., & Hofmann, H. J.
Affiliations
Nanjing Institute of Geology and Paleontology (CN)
Venue
Alcheringa: An Australasian Journal of Palaeontology
Published
1998-01
Volume
22
Issue
3
Pages
189-222
ISSN
  • 0311-5518 (ISSN-L)
  • 1752-0754
OpenAlex
W2018261895
Cited by
90
References
35
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 1 · 2022: 4 · 2021: 1 · 2020: 3 · 2019: 5 · 2018: 3 · 2017: 1 · 2016: 3 · 2014: 5 · 2013: 2 · 2012: 2
FWCI
3.63
Type
journal article
Language
en
Open access
closed
Locations
Alcheringa An Australasian Journal of Palaeontology (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protist diversity and phylogeny
Keywords
Doushantuo Formation, Sinian, Neoproterozoic, microfossils, acritarchs, new genus, new species, cyanobacteria, bacteria, thallophytes, biostratigraphic correlation, Ediacaran, Guizhou, Amadeus Basin

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review