Basic information
Sample name: Kavakdere

Reference: E. Unay-Bayraktar. 1989. Rodents from the Middle Oligocene of Turkish Thrace. Utrecht Micropaleontological Bulletins, Special Publication 5:1-119 [ER 2386]
Country: Turkey

Coordinate: 38.18° N, 26.90° E
Basis of coordinate: based on nearby landmark
Geography comments: "in the west bank of the Kavak valley just south of the small barrage" (coordinate based on Kavakdere Dam)
"about three metres above a kaolinitis­ed volcanic tuff... dated 33.0 ± 3 My" by fission track dating of apatite (date is wildly inconsistent with the mammal biochronology); "late Early Oligocene" and presumably MP25 based on the age of Kocayarma (i.e., roughly 28 Ma)
the entire formation was "deposited during some one to two million years"
Climate and habitat
Substrate: ground surface
Lithology: claystone
Habitat comments: "40 em thick brownish sandy-clay bed, rich in gastropods"
Life forms: rodents
Sample size: 242
Sampling comments: "The mesh of the finest sieve used is 0.5 mm...The approximate weight of the matrix washed" was "1900 kg"
"The insectivores which occur associated with the rodents will not be dealt with in this paper"
Sample: 2567
Contributor: John Alroy
Enterer: John Alroy
Created: 2017-02-17 14:17:11
Modified: 2017-02-17 14:17:11
Abundance distribution
13 species
4 singletons
total count 242
standardised richness: 7.2
Fisher's α: 2.939
geometric series k: 0.7018
Hurlbert's PIE: 0.7924
Shannon's H: 1.8226
Good's u: 0.9835