Thomas Farm (Unit 11)
Basic information
Sample name: Thomas Farm (Unit 11)
Reference: A. E. Pratt. 1989. Taphonomy of the microvertebrate fauna from the early Miocene Thomas Farm locality, Florida (U.S.A.). Palaeogeography, Palaeoclimatology, Palaeoecology 76:125-151 [ER 2341]
Geography
Country: United States
State: Florida
County: Gilchrist
Coordinate: 29.73° N, -82.80° W
Coordinate basis: based on political unit
Time interval: Early Miocene
Ma: 18
Geography comments: "early Miocene (early Hemingfordian, ca. 18 Ma)"
coordinate based on Gilchrist County
coordinate based on Gilchrist County
Environment
Substrate: ground surface
Lithology: breccia
Habitat comments: "most of the fossils removed in this analysis were taken from a section of approximately 3m...
(1) a series of alternating clay and sandy-clay layers found in the lowest exposed regions of the site (units 4-7).
(2) two massive layers of limestone boulders (units 8 and 11), separated by a thin clay (unit 10) and a sand layer (unit 9).
(3) several layers of white to yellow calcareous sand formed by the breakdown of limestone (units 12-15)."
(1) a series of alternating clay and sandy-clay layers found in the lowest exposed regions of the site (units 4-7).
(2) two massive layers of limestone boulders (units 8 and 11), separated by a thin clay (unit 10) and a sand layer (unit 9).
(3) several layers of white to yellow calcareous sand formed by the breakdown of limestone (units 12-15)."
Methods
Life forms: bats,rodents,frogs,salamanders
Sampling methods: screenwash
Sample size: 1299 specimens
Years: 1981 - 1985
Metadata
Sample number: 2503
Contributor: John Alroy
Enterer: John Alroy
Created: 2017-02-13 07:14:47
Modified: 2017-02-12 20:16:35
Abundance distribution
11 species
5 singletons
total count 1299
geometric series index: 23.4
Fisher's α: 1.649
geometric series k: 0.4942
Hurlbert's PIE: 0.2098
Shannon's H: 0.4908
Good's u: 0.9962
Each square represents a species. Square sizes are proportional to counts.
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