Barren Shale Interval, Jaycox Member, Seneca Lake Valley, Ontario Co., NY (Devonian of the United States)

Where: Ontario County, New York (42.8° N, 77.0° W: paleocoordinates 36.9° S, 24.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Jaycox Member (Ludlowville Formation), Givetian (387.7 - 382.7 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; gray, calcareous siltstone

• blue-gray, hard, brittle calcareous siltstone

Preservation: trace

Collection methods: surface (in situ),

Primary reference: S. M. Mayer. 1989. Stratigraphy and Paleontology of the Jaycox Shale Member, Hamilton Group of the Finger Lakes Region of New York State. 1-121 [A. Miller/K. Layou/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 9015: authorized by Arnold Miller, entered by Karen Layou on 15.09.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• This list is a composite faunal list for the three localities listed above. Sinuous burrows and problematic soft body fossils (from picture shown, they look like tiny jellyfish medusae) are also present in this bed.
Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
crinoid stems
Strophomenata
 Strophomenida -
"Chonetacea indet." = Chonetoidea
"Chonetacea indet." = Chonetoidea Bronn 1862
 Strophomenida - Leptostrophiidae
Protoleptostrophia perplana
Rhynchonellata
 Spiriferida - Mucrospiriferidae
Mucrospirifer mucronatus
 Spiriferida - Spinocyrtiidae
Mediospirifer audaculus
  - Tropidoleptidae
Tropidoleptus carinatus
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
fenestrates
Bivalvia
  -
Bivalvia indet.
Bivalvia indet. Linnaeus 1758 clam
small bivalve
 Nuculanida - Malletiidae
Palaeoneilo sp.
Palaeoneilo sp. Hall and Whitfield 1869 clam
[entered as Paleoneilo sp.]
 Ichnofossils -
Zoophycos sp.
Zoophycos sp. Massalongo 1855