Les Alleveys 1986
Basic information
Sample name: Les Alleveys 1986
Reference: J. J. Hooker and M. Weidmann. 2007. A diverse rodent fauna from the middle Bartonian (Eocene) of Les Alleveys, Switzerland: snapshot of the early theridomyid radiation. Swiss Journal of Geosciences 100:469-493 [ER 2393]
Geography
Country: Switzerland
Coordinate: 47° 39' N, 7° 32' E
Latlng basis: based on nearby landmark
Time interval: Middle Eocene
Zone: MP15/16
Ma: 38.0
Geography comments: "within the commune of La Sarraz... at the western extremity of Mormont" (coordinate based on Le Mormont)
"entirely middle Bartonian... slightly older than Robiac, the reference locality for MP16"; shown on a chart as in between MP15 and MP16 and roughly 38 Ma
"entirely middle Bartonian... slightly older than Robiac, the reference locality for MP16"; shown on a chart as in between MP15 and MP16 and roughly 38 Ma
Environment
Substrate: ground surface
Lithology: sandstone
Habitat comments: "red clay alternating with sandy layers with quartz and ferruginous pisoliths. It was from these coarse layers that almost all the fossils were collected"
Methods
Life forms: rodents
Excluded forms: bats, carnivores, primates, ungulates, other small mammals
Sampling methods: screenwash
Sample size: 112 specimens
Net or trap nights: 0
kg screened: 500
Basal area status: not applicable
Sampling comments: "one of us (MW) extracted nearly 500 kg of sediment from the fissure (Fig. 1e), emptying it completely. After washing and sieving, this material yielded a total of about 700 teeth and innumerable bone fragments of mammals, rare reptile teeth and numerous teeth of marine fish (pycnodont bony fish and odontaspid sharks), the last reworked from the Cretaceous limestones"
numerous undescribed taxa are listed in Table 1
numerous undescribed taxa are listed in Table 1
Metadata
Sample no: 2587
Contributor no: John Alroy
Enterer: John Alroy
Created: 2017-02-17 21:35:00
Modified: 2023-09-08 12:17:20
Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
10 species
2 singletons
total count 112
geometric series index: 16.0
Fisher's α: 2.656
geometric series k: 0.6637
Hurlbert's PIE: 0.755
Shannon's H: 1.6673
Good's u: 0.9825
Register
| Sciuroides siderolithicus | 4 | |
| Suevosciurus sp. | 2 | |
| questionably referred | ||
| Protadelomys sp. | 5 | |
| questionably referred | ||
| Remys sp. | 2 | |
| Paradelomys sp. | 29 | |
| †Elfomys engesseri | 40 | |
| new | ||
| Pseudoltinomys aff. crebrum | 5 | |
| Estellomys ibericus | 23 | |
| Patriotheridomys sp. | 1 | |
| questionably referred | ||
| Theridomyinae indet. | 1 | |