Richfield Springs - Ravena (Devonian of the United States)

Where: Herkimer & Otsego County, New York (42.9° N, 74.8° W: paleocoordinates 34.8° S, 33.8° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Ravena Member (Coeymans Formation), Lochkovian (419.2 - 410.8 Ma)

• member-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, shelly/skeletal, gray, blue grainstone

• The Ravena consists of very hard, coarse-grained, gray or blue crystalline limestones. It weathers dark gray or brownish and has a rough appearance. Bedding is usually massive, individual layers varying from 10 inches to several feet in thickness. when weathered these massive beds often display a stratification whose bedding planes are quite irregular or "wavy." Scattered throughout the formation are frequent lenses or beds entirely composed of the valves of the brachiopod Gypidula coeymanensis and the columnals of crinoids or cystoids. These are often in such abundance that the rock may be termed a coquinite.

Primary reference: L.V. Rickard and D.H. Zenger. 1964. Stratigraphy and Paleontology of the Richfield Springs and Cooperstown Quadrangles, New York. Bulletin of the New York State Museum and Science Service 396:101 [L. Ivany/P. Wall]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 76757: authorized by Linda Ivany, entered by Patrick Wall on 02.12.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

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Trilobita
 Phacopida - Dalmanitidae
Dalmanites litchfieldensis, Odontochile micrurus
Rhynchonellata
 Spiriferida - Delthyrididae
Howellella cyclopterus
 Pentamerida - Parastrophinidae
Anastrophia verneuili
 Pentamerida - Gypidulidae
Gypidula coeymanensis
 Athyridida - Meristellidae
Meristella laevis, Meristella praenuntia
 Atrypida - Atrypidae
Atrypa reticularis
Atrypa reticularis Linnaeus 1758
 Orthida - Rhipidomellidae
Rhipidomelloides oblata
 Rhynchonellida - Camarotoechiidae
Camarotoechia semiplicata
 Rhynchonellida - Uncinulidae
Uncinulus mutabilis
Strophomenata
 Strophomenida - Leptostrophiidae
Leptostrophia planulata
 Strophomenida - Rafinesquinidae
Leptaena rhomboidalis
Leptaena rhomboidalis Wahlenberg 1818
 Strophomenida - Amphistrophiidae
"Brachyprion varistriata" = Mesodouvillina varistriata
"Brachyprion varistriata" = Mesodouvillina varistriata Conrad 1842
 Strophomenida - Strophonellidae
Strophonella punctulifera
Gastropoda
 Bellerophontida - Bucaniidae
Tremanotus profundus
Tremanotus profundus Hall 1859 snail
 Rhombifera - Callocystitidae
Lepocrinites gebhardii
Anthozoa
 Stauriida - Streptelasmatidae
Enterolasma strictum
 Favositida - Favositidae
Favosites helderbergiae