Valdecollares
Basic information
Sample name: Valdecollares

Reference: P. Pelaez-Campomanes. 1995. Valdecollares: a rodent fauna from the lower Oligocene of the Loranca Basin (Cuenca, Spain). Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen 98(3):265-289 [ER 3958]
Geography
Country: Spain

State: Cuenca


Coordinate: 40.07° N, -2.25° W
Coordinate basis: estimated from map

Time interval: Early Oligocene

Zone: MP23

Geography comments: "on the North margin of the national road between Madrid and Cuenca (Kilometre 120 approximately)"
this means the A-40: the distance from Madrid to Cuenca is approximately 170 km but A-40 starts in Ocaña, which is a 130 km drive, so this may be 10 km west of Cuenca (basis of estimate)
"in the alluvial deposits of the 'Unidad Detrica Inferior.'"
referred to MP23 based on similarities to the faunas of Târrega and Montalbân

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Environment
Lithology: marl

Taphonomic context: fluvial deposit

Habitat comments: "The sub-vertical fossiliferous level is roughly 50 cm. thick and consists of light grey marl, which becomes progressively more calcareous towards the top of the bed"

Methods
Life forms: rodents

Sample size: 179 specimens

Sampling comments: collectiong methods are not discussed and there is no indication that additional taxa may be present

Metadata
Sample number: 4367

Contributor: John Alroy

Enterer: John Alroy

Created: 2023-09-06 17:56:00

Modified: 2023-09-06 07:56:00

Abundance distribution
7 species
0 singletons
total count 179
geometric series index: 7.9
Fisher's α: 1.451
geometric series k: 0.5632
Hurlbert's PIE: 0.6736
Shannon's H: 1.4589
Good's u: 1.0000
Each square represents a species. Square sizes are proportional to counts.
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Register
†Theridomys major15
†Blainvillimys cf. gregarius24
†Elfomys medius21
†Gliravus tenuis17
†Eucricetodon nanus94
new
†Pseudocricetodon cf. montalbanensis5
Muroidea indet.3
not the same as the other two muroids