Yang Tsao Ti, Lufeng (lower): Hettangian, China
collected by E. Oehler 1948
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Morganucodonta
- Morganucodontidae
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Morganucodon oehleri n. sp.
Rigney 1963
|
Robinson 1962 | 2 specimens | ||||||||
| CUP 2320, UCL | ||||||||||
| see common names | ||||||||||
Geography
| Country: | China | State/province: | Yunnan | County: | Lufeng |
| Coordinates: | 25.2° North, 102.1° East (view map) | ||||
| Paleocoordinates: | 34.4° North, 104.7° East | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | hand sample |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Hettangian | 10 m.y. bin: | Jurassic 1 |
| *Period: | Late/Upper Triassic - Early/Lower Jurassic | *Epoch: | Late/Upper Triassic |
| *International age/stage: | Rhaetian | ||
| Key time interval: | Hettangian | ||
| Age range of interval: | 201.40000 - 199.50000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Lufeng | Member: | Shawan | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Lufeng Mesozoic Sediments divided into Lower and Upper Series. Units 1-4 in Lower Series, Units 5-8 in Upper Series.
The Lufeng Formation has been divided into lower dark/dull purple beds (= Shawan Member) and upper dark/deep red beds (= Zhangjiawa Member). Luo & Wu (1994: In the Shadow of the Dinosaurs, pp. 251–270) argue on the basis of vertebrate biostratigraphy for a probable Sinemurian age for the Zhangjiawa Member and a Hettangian age for the Shawan Member. | |||||
Lithology and environment
| Primary lithology: | concretionary,green,red,blue poorly lithified calcareous claystone |
| Includes fossils? | Y |
| Lithology description: "They are a somewhat compacted red clay with purplish and light blue-green streaks and contain many calcareous nodules" | |
| Environment: | terrestrial indet. |
| Geology comments: First fossiliferrous beds occur 200 m abovebase of unit 2. Morganucodon found in this bed. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
| Preservation of anatomical detail: | good |
| Fragmentation: | occasional |
Collection methods and comments
| Collection excludes: | some macrofossils | ||
| Collection methods: | selective quarrying,mechanical,field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | E. Oehler | Collection dates: | Sept 1948 |
| Taxonomic list comments:Fossiliferrous units described as "rich in saurischians" and therapsids: Beinotherium and Sinocodon are also reported from same expedition, but no stratigraphic information given. | |||
Metadata
| Database number: | 11805 | ||
| Authorizer: | W. Clyde | Enterer: | J. Finarelli |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2001-09-12 05:07:44 | Last modified: | 2012-12-10 13:18:05 |
| Access level: | the public | Released: | 2001-09-12 05:07:44 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 43831. | H. W. Rigney. 1963. A specimen of Morganucodon from Yunnan. Nature 197(4872):1122-1123 [M. Carrano/M. Carrano] |
Secondary references:
| 4202 | 5% 30500 | K. A. Kermack, F. Mussett, and H.W. Rigney. 1973. The lower jaw of Morganucodon. Zoological Journal of the Linnean Society of London 53(2):87-175 [W. Clyde/J. Finarelli/R. Butler] |
| 43837 | P. L. Robinson. 1962. Gliding lizards from the upper Keuper of Great Britain. Proceedings of the Geological Society of London 1601:137-146 [M. Carrano/M. Carrano] |