Kajun Village (MK-1)
Basic information
Sample name: Kajun Village (MK-1)
Reference: W. Deng, T. Su, T. Wappler, J. Liu, S. Li, J. Huang, H. Tang, S. L. Low, T. Wang, H. Xu, X. Xu, P. Liu, and Z. Zhou. 2020. Sharp changes in plant diversity and plant-herbivore interactions during the Eocene-Oligocene transition on the southeastern Qinghai-Tibetan Plateau. Global and Planetary Change 194(103293):1-11 [ER 4415]
Geography
Country: China
State: Tibet
County: Markam
Coordinate: 29.72° N, 98.45° E
Latlng basis: based on nearby landmark
Formation: Lawula
Time interval: Early Oligocene
Ma: 34.6
Age basis: Ar-Ar
Geography comments: Kajun Village is "about 16 km northwest of the Gatuo Town, Markam County"
coordinate based on Kajun
40Ar/39Ar dated at 33.4 ± 0.6 Ma
coordinate based on Kajun
40Ar/39Ar dated at 33.4 ± 0.6 Ma
Environment
Lithology: mudstone
Habitat comments: lithology given by Su et al. (2019, Natl. Sci. Rev.) as "carbonaceous mudstones and thin coals"
Methods
Life forms: leaves
Sample size: 461 specimens
Museum: Xishuangbanna Tropical Botanical Garden
Net or trap nights: 0
Basal area status: not applicable
Sampling comments: collection methods are not indicated
Metadata
Sample no: 4698
Contributor no: John Alroy
Enterer: John Alroy
Modifier no: John Alroy
Created: 2025-11-22 08:37:44
Modified: 2025-11-22 08:44:56
Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
26 species
3 singletons
total count 461
geometric series index: 35.4
Fisher's α: 5.962
geometric series k: 0.8289
Hurlbert's PIE: 0.881
Shannon's H: 2.5474
Good's u: 0.9935
Register
| Pinus sp. | 5 | |
| Picea sp. | 4 | |
| Monocots indet. | 37 | |
| Rosa sp. 1 | 27 | |
| Cercocarpus cf. henricksonii | 19 | |
| Spiraea cf. betulifolia | 34 | |
| Spiraea sp. 2 | 88 | |
| Pyracantha sp. | 15 | |
| Cotoneaster sp. 1 | 4 | |
| Cotoneaster sp. 2 | 11 | |
| Cotoneaster sp. 3 | 7 | |
| Sorbus sp. | 16 | |
| Orecnide sp. | 26 | |
| Quercus sp. 1 | 1 | |
| Quercus cf. preguyavaefolia | 14 | |
| Alnus sp. 1 | 8 | |
| Betula sp. | 2 | |
| Salix cf. cardiophylla | 109 | |
| Salix sp. 4 | 5 | |
| Angiospermae indet. MK-1-1 | 17 | |
| Angiospermae indet. MK-1-2 | 2 | |
| Angiospermae indet. MK-1-3 | 3 | |
| Angiospermae indet. MK-1-4 | 1 | |
| Angiospermae indet. MK-1-5 | 3 | |
| Angiospermae indet. MK-1-6 | 1 | |
| Angiospermae indet. MK-1-7 | 2 | |