Locality 87a, Union Valley Quarry--lower, Triangle Fm., Sonyea Grp, NY (Devonian of the United States)

Where: Chenango County, New York (42.3° N, 75.5° W)

• Paleocoordinates: 32.9° S, 42.6° W (Wright 2013)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Triangle Formation (Sonyea Group), Frasnian (382.7 - 372.2 Ma)

• formation-level stratigraphic resolution

Environment/lithology: delta front; mudstone and sandstone

• mudstones and sandstones; cross-bedding, wave and current ripples, groove casts, pillow structures, and parallel laminae common in coarser sediments

Primary reference: K. B. Macdonald. 1975. Quantitative community analysis: Recurrent group and cluster techniques applied to the fauna of the Upper Devonian Sonyea Group, New York. Journal of Geology 82:473-499 [A. Miller/K. Layou]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 10296: authorized by Arnold Miller, entered by Karen Layou on 03.04.2001

Creative Commons license: CC0 (CC0)

Taxonomic list

• Relative abundance categories: (1) 1-10 specimens; (2) 11-100 specimens; (3) 101-1000 specimens; and (4)more than 1000
Show authors, comments, and common names
Cephalopoda
 Nautiloidea -
Nautiloidea indet.
Nautiloidea indet. Agassiz 1847 nautiloid
Bivalvia
 Ostreida - Pterineidae
Leptodesma naviforme
 Cardiidia - Grammysiidae
Sphenotus sp.
Sphenotus sp. Hall 1884 clam
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
Rhynchonellata
 Atrypida - Atrypidae
Atrypa sp.
Atrypa sp. Dalman 1828
 Spiriferida - Mucrospiriferidae
Mucrospirifer sp.
Mucrospirifer sp. Grabau 1931
 Rhynchonellida - Leiorhynchidae
Leiorhynchus sp.
Leiorhynchus sp. Hall 1860
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
crinoid columnals