Brown Mountain Gilboa (Devonian of the United States)

Where: Schoharie County, New York (42.4° N, 74.5° W: paleocoordinates 39.7° S, 22.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Eifelian (393.3 - 387.7 Ma)

• "Devonian... about 376-379 Ma"; this apparently means Eifelian based on dates for this stage given in early 1980s time scales (see Harland et al. 1989, fig. 1.5)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithified mudstone

• "predominantly terrestrial, possibly close to an area of quiet water in a swamp, or at a pond or stream edge"
• "mudstone"

Size classes: macrofossils, microfossils

Preservation: original chitin

Collected in 1971; reposited in the AMNH

Collection methods: bulk, chemical, hydroflouric

• discovered in 1971

•mites were collected "by bulk maceration (dissolving the matrix with hydrofluoric acid)"

Primary reference: R. A. Norton, P. M. Bonamo, J. D. Grierson and W. A. Shear. 1988. Oribatid mite fossils from a terrestrial Devonian deposit near Gilboa, New York. Journal of Paleontology 62(2):259-269 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106001: authorized by John Alroy, entered by John Alroy on 28.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• numerous plants and other arthropods are present and discussed in earlier publications
unclassified
  -
Leclercqia complexa
"mats of axes" that "filtered and collected the smaller arthropod specimens"
Arachnida
 Acariformes -
Oribatida indet. Dugès 1834 oribatid mite
two additional, indeterminate forms
 Acariformes - Protochthoniidae
Protochthonius gilboa n. gen. n. sp.
Protochthonius gilboa n. gen. n. sp. Norton et al. 1988 oribatid mite
 Acariformes - Devonacaridae
Devonacarus sellnicki n. gen. n. sp.
Devonacarus sellnicki n. gen. n. sp. Norton et al. 1988 oribatid mite