Onondaga Formation, Seneca Member (Devonian of the United States)

Where: New York (43.0° N, 76.0° W: paleocoordinates 38.9° S, 23.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Seneca Member (Onondaga Formation), Eifelian (393.3 - 387.7 Ma)

• "Chonetes" community

• formation-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified, argillaceous limestone

• Seems like tempestite deposition, but get verification. "...indicative of poor circulation and a low oxygen content"; "Very highly argillaceous"; "extremely soft substratum"; "Outer-neritic"; shelf edge (see Koch, 1981); Chonetes zone corresponds to zone J of Oliver, 1954)
• Very highly argillaceous limestone, fossil-poor except for Chonetid zone

Size classes: macrofossils, mesofossils

Reposited in the AMNH

Primary reference: H.R. Feldman. 1980. Level-bottom brachiopod communities in the Middle Devonian of New York. Lethaia 13:27-46 [P. Novack-Gottshall/P. Hearn]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 77080: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 19.12.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Euomphalida indet.
Crinoidea
 Camerata -
Camerata indet.
Camerata indet. Wachsmuth and Springer 1885 Sea lily
"Rare"
Trilobita
 Phacopida - Phacopidae
"Phacops cristata" = Viaphacops cristatus
"Phacops cristata" = Viaphacops cristatus Hall 1861 trilobite
"Rare"
 Phacopida - Dalmanitidae
Odontocephalus sp.
Odontocephalus sp. Conrad 1840 trilobite
"Rare"
Strophomenata
 Strophomenida - Chonetidae
"Chonetes aff. lineata" = Hallinetes lineatus
"Chonetes aff. lineata" = Hallinetes lineatus Conrad 1839
 Strophomenida - Rafinesquinidae
Leptaena aff. rhomboidalis
 Strophomenida - Strophodontidae
Megastrophia sp.
Megastrophia sp. Caster 1939
 Orthotetida -
Orthotetida indet.
Orthotetida indet. Waagen 1884
Rhynchonellata
 Athyridida - Athyrididae
Athyris sp.
 Spiriferida - Cyrtinopsidae
Megakozlowskiella raricosta
 Pentamerida - Clorindidae
Pentamerella arata
Pentamerella arata Conrad 1841
 Atrypida - Atrypidae
Atrypa reticularis
Atrypa reticularis Linnaeus 1758
Anthozoa
 Stauriida - Stereolasmatidae
Amplexiphyllum sp.
Amplexiphyllum sp. Stumm 1949 horn coral
"Common"
 Stauriida - Amplexidae
Heterophrentis sp.
Heterophrentis sp. Billings 1875 horn coral
"Common"