Meishu - [Maotianshan Shale, Yuanshan Fm (formerly Qiongzhusi)]: Atdabanian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Isoxyida
- Isoxyidae
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Isoxys spp.
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Isoxys paradoxus
Hou 1987
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Isoxys auritus
Jiang 1982
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Isoxys curvirostratus
Vannier and Chen 2000
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| see common names | |||||||
Geography
| Country: | China | State/province: | Yunnan | County: | Kunming |
| Coordinates: | 25.1° North, 102.7° East (view map) | ||||
| Paleocoordinates: | 34.9° North, 161.3° East | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Series 2 |
| Stage: | Stage 3 | 10 m.y. bin: | Cambrian 2 |
| *Period: | Early/Lower Cambrian | *Epoch: | Caerfai |
| Key time interval: | Atdabanian | Zone: | Eoredlichia |
| Age range of interval: | 521.00000 - 515.60000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Yuanshan | Member: | Maotianshan Shale | ||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: AGE: Modified from Caerfai to Atdabanian by Hendy (2/2009) following Steiner (2005, 2007). | |||||
Lithology and environment
| Primary lithology: | planar lamination,gray,green,yellow lithified carbonaceous mudstone |
| Includes fossils? | Y |
| Lithology description: LITHOLOGY: Dark grey-green (yellow, when weathered), finely laminated mudstones, containing organic hash in great quantity. LITHIFICATION: Lithified, on the basis of figures. | |
| Environment: | prodelta |
Taphonomy
| Modes of preservation: | adpression,soft parts |
| Lagerst�tten type: | conservation |
| Size of fossils: | macrofossils,mesofossils |
| Preservation of anatomical detail: | excellent |
| Articulated whole bodies: | many |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: There are other organisms in the Maotianshan shale biota and are mentioned in the article only to stress that several animal phyla had already invaded the mid water environment by Early Cambrian times. | |
Metadata
| Also known as: | Chengjiang biota | ||
| Database number: | 10748 | ||
| Authorizer: | M. Patzkowsky | Enterer: | P. Borkow |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2001-06-19 06:59:26 | Last modified: | 2009-02-21 14:01:19 |
| Access level: | the public | Released: | 2001-06-19 06:59:26 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 3994. | J. M. C. Vannier and J. Y. Chen. 2000. The Early Cambrian colonization of pelagic niches exemplified by Isoxys (Arthropoda). Lethaia 33(4):295-311 [M. Patzkowsky/P. Borkow/O. Alfaro] |