Erquelinnes
Basic information
Sample name: Erquelinnes

Reference: P. Missiaen, F. Quesnel, C. Dupuis, J.-Y. Storme, and T. Smith. 2013. The earliest Eocene mammal fauna of the Erquelinnes Sand Member near the French-Belgian border. Geologica Belgica 16(4):262-273 [ER 3956]
Geography
Country: Belgium


Coordinate: 50° 18' N, 4° 7' E
Coordinate basis: based on nearby landmark

Formation: Tienen

Time interval: Early Eocene

Zone: MP7

Geography comments: from the Erquelinnes Sand Member of the Tienen Formation, assigned to the "earliest Eocene" and specifically MP7
the quarries are immediately to the west and northwest of Erquelinnes (basis of coordinate)

Environment
Lithology: conglomerate

Taphonomic context: fluvial deposit

Habitat comments: from "fluvial" deposits in "a series of sand quarries" that were "deposited rapidly in channels of braided rivers"
the mammals are almost all from "lenticular deposits of the basal gravel bed" in the member, but the perissodactyl Cymbalophus cuniculus was found in the overlying "cross-bedded sands"

Methods
Life forms: carnivores,primates,rodents,ungulates,other large mammals,other small mammals

Sampling methods: quarry

Sample size: 36 specimens

Years: 1880, 1891, 1922, 1924, 1958

Sampling comments: a series of papers from 1909 through 1929 listed the fauna and Teilhard de Chardin (1927) illustrated the specimens
"most of the specimens were found during the 1922 fieldwork supervised by Dollo"
"the historic Erquelinnes quarries" are "no longer exposed anywhere", explaining why no new specimens are discussed
the single specimen of Cymbalophus cuniculus is omitted here because it is not from the same bed as the rest of the fauna

Metadata
Sample number: 4365

Contributor: John Alroy

Enterer: John Alroy

Created: 2023-09-06 16:45:05

Modified: 2023-09-06 06:45:05

Abundance distribution
15 species
7 singletons
total count 36
geometric series index: 43.3
Fisher's α: 9.655
geometric series k: 0.8702
Hurlbert's PIE: 0.8889
Shannon's H: 2.4444
Good's u: 0.8117
Each square represents a species. Square sizes are proportional to counts.
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