Liexi fauna: Floian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Hydrozoa
- Hydroida
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Inocaulis sp.
Hall 1852
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| Mis-spelled "Innocaulis sp." | ||||||||||
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Scyphozoa
- Conulariida
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Conulariida indet.
Miller and Gurley 1896
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unclassified
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Porifera indet.
Grant 1836
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Demospongiae
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Demospongea indet.
(Sollas 1875)
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| corrected as Demospongiae | ||||||||||
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Pterobranchia
- Dendroidea
- Dendrograptidae
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Dendrograptus hallians
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| Dendrograptus hallians moneymakeri | ||||||||||
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Pterobranchia
- Dendroidea
- Acanthograptidae
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Dictyonema delicatulum
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Dictyonema sp.
Hall 1851
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Pterobranchia
- Graptoloidea
- Dichograptidae
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Clonograptus flexilis
Hall 1858
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Pterobranchia
- Graptoloidea
- Anisograptidae
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Araneograptus cf. pulchellus
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Rhombifera
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Rhombifera indet.
Zittel 1879
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Cyclocystoidea
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? Cyclocystoidea indet.
Miller and Gurley 1895
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| Cyclocystoid-like | ||||||||||
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Conodonta
- Protopanderodontida
- Serratognathidae
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Serratognathus diversus
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Conodonta
- Prioniodontida
- Rhipidognathidae
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Rhipidognathus yichangensis
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Bergstroemognathus extensus
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Conodonta
- Prioniodontida
- Acodontidae
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Acodus triangularis
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Conodonta
- Prioniodontida
- Balognathidae
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Prioniodus honghuayuanensis
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Conodonta
- Prioniodontida
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Paracordylodus gracilis
Lindström 1955
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Polychaeta
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Sphenothallus sp.
Hall 1847
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Polychaeta
- Phyllodocida
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Machaeridia indet.
()
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Stenolaemata
- Cryptostomata
- Rhinidictyidae
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Prophyllodictya sp.
Gorjunova and Lavrentjeva 1987
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Strophomenata
- Billingsellida
- Polytoechiidae
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Tritoechia sp.
Ulrich and Cooper 1936
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Strophomenata
- Billingsellida
- Tritoechiidae
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Pomatotrema sp.
Ulrich and Cooper 1932
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Lingulata
- Lingulida
- Obolidae
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Obolus sp.
Eichwald 1829
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Palaeoglossa sp.
Cockerell 1911
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Agnostida
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Agnostida indet.
Salter 1864
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Trilobita
- Phacopida
- Pliomeridae
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Liexiaspis sp.
Liu 1982
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Ovalocephalus sp.
Koroleva 1959
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Trilobita
- Phacopida
- Cheiruridae
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Cheiruridae indet.
Hawle and Corda 1847
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Trilobita
- Asaphida
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Asaphida indet.
Salter 1864
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Trilobita
- Asaphida
- Asaphidae
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Niobella sp.
Reed 1931
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| spelled with current rank as Niobe (Niobella) | ||||||||||
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Trilobita
- Trinucleida
- Raphiophoridae
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Ampyx sp.
(Dalman 1827)
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| original and current combination Asaphus (Ampyx) | ||||||||||
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Trilobita
- Corynexochida
- Leiostegiidae
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Pseudocalymene sp.
Pillet 1974
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Annamitella sp.
Mansuy 1920
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Palaeoscolecida
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Palaeoscolecida indet.
Conway-Morris and Robison 1986
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Ottoidae
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? Ottoia sp.
Walcott 1911
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| Either Ottoia or Eldonia-like | ||||||||||
| see common names | ||||||||||
Geography
| Country: | China | State/province: | Hunan | County: | Yongshun |
| Coordinates: | 28.8° North, 109.8° East (view map) | ||||
| Paleocoordinates: | 16.6° North, 138.8° East | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Ordovician | Epoch: | Early Ordovician |
| Stage: | Floian | 10 m.y. bin: | Ordovician 2 |
| Key time interval: | Floian | Trilobite zone: | Prioniodus honghuayuanensis |
| Age range of interval: | 477.7 - 470 m.y. ago |
Stratigraphy
| Formation: | Madaoyu | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: "early–mid-Floian (Early Ordovician) age." "upper part of the Madaoyu Formation" | |||||
Lithology and environment
| Primary lithology: | lithified packstone | ||
| Secondary lithology: | lime mudstone | ||
| Includes fossils? | Y | ||
| Lithology description: "a succession of thin- to medium-bedded bioclastic packstone intercalated with some extremely thin layers of calcareous mudstone, which is 1–2 mm thick" | |||
| Environment: | deep subtidal shelf | Tectonic setting: | passive margin |
| Geology comments: "transitional zone between the carbonate platform and the upper slope" | |||
Taphonomy
| Modes of preservation: | body,adpression,soft parts |
| Lagerst�tten type: | conservation |
| Degree of concentration: | -single event |
| Size of fossils: | macrofossils,mesofossils |
| Spatial orientation: | life position |
| Preservation of anatomical detail: | excellent |
| Articulated whole bodies: | all |
| Temporal resolution: | snapshot |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Museum repositories: | NIGPAS |
Metadata
| Database number: | 226639 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Novack-Gottshall |
| Modifier: | P. Novack-Gottshall | ||
| Created: | 2022-07-19 09:22:33 | Last modified: | 2022-07-19 09:22:47 |
| Access level: | the public | Released: | 2022-07-19 09:22:33 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 82226. | X. Fang, Y. Mao, Q. Liu, W. Yuan, Z. Chen, R. Wu, L. Li, Y. Zhang, J. Ma, W. Wang, R. Zhan, S. Peng, Y. Zhang and D. Huang. 2022. The Liexi fauna: a new Lagerstätte from the Lower Ordovician of South China. Proceedings of the Royal Society B: Biological Sciences 289(1978):20221027 [P. Novack-Gottshall/P. Novack-Gottshall] |