LJB Genesee Valley nr Geneseo (Devonian of the United States)

Also known as Jaycox Run Ludlowville Formation, Jaycox member Genesee Valley Jaycox Creek 3 mi N of Geneseo, Livingston Co Geneseo Quad

Where: Livingston County, New York (42.9° N, 77.8° W: paleocoordinates 37.7° S, 25.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: lower varcus conodont zone, Jaycox Formation (Hamilton Group), Middle Devonian (393.3 - 382.7 Ma)

Environment/lithology: open shallow subtidal; lithified, argillaceous, muddy lime mudstone

Size class: macrofossils

Preservation: mold/impression

Collection methods: bulk,

Primary reference: L. C. Ivany, C. E. Brett, H. L. B. Wall, P. D. Wall, and J. C. Handley. 2009. Relative taxonomic and ecological stability in Devonian marine faunas of New York State: a test of coordinated stasis. Paleobiology 35(4):499-524 [B. Deline/B. Deline/M. Uhen]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 91277: authorized by Brad Deline, entered by Brad Deline on 14.09.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Trilobita
 Phacopida - Phacopidae
"cf. Phacops rana" = Eldredgeops rana
"cf. Phacops rana" = Eldredgeops rana Green 1832 trilobite
 Phacopida - Acastidae
cf. Greenops boothi trilobite
or G. graba
Strophomenata
 Productida - Chonetidae
 Strophomenida - Douvillinidae
 Strophomenida - Leptostrophiidae
Rhynchonellata
 Athyridida - Rhynchospirinidae
 Athyridida - Parazygidae
Parazyga hirsuta Hall 1857
 Athyridida - Meristellidae
 Athyridida - Nucleospiridae
 Athyridida - Athyrididae
 Spiriferida - Spinocyrtiidae
 Spiriferida - Elythidae
Elita fimbriata Conrad 1842
 Pentamerida - Clorindidae
 Rhynchonellida - Machaerariidae
 Orthida - Rhipidomellidae
Bivalvia
 Myalinida - Ambonychiidae
"Plethomytilus oviformis" = Mytilarca
"Plethomytilus oviformis" = Mytilarca clam
 Pectinida - Aviculopectinidae
Aviculopecten sp. M'Coy 1851 scallop
 Ostreida - Pterineidae
 Carditida - Cardiniidae
Cypricardinia indenta Conrad 1842 clam
 Modiomorphida - Modiomorphidae
"Goniophora hamiltonensis" = Goniomorpha hamiltonensis
"Goniophora hamiltonensis" = Goniomorpha hamiltonensis Hall and Whitfield 1869 clam
 Protobranchia -
Palaeoneilo constricta Conrad 1842 clam
Gastropoda
 Euomphalina - Platyceratidae
Platyceras sp., "Naticonema lineatum" = Platyostoma lineata
Platyceras sp. Conrad 1840 snail
"Naticonema lineatum" = Platyostoma lineata Conrad 1842 snail
Stenolaemata
 Fenestrida - Fenestellidae
 Cyclostomata -
 Cystoporida - Sulcoreteporidae
 Cystoporata -
Blastoidea
 Spiraculata -
Eleutherocrinus sp. Shumard and Yandell 1856
Placoblastus sp. Fay 1961
Anthozoa
 Favositida - Micheliniidae
 Favositida - Pachyporidae
"cf. Trachypora ornata" = Thamnoptychia
"cf. Trachypora ornata" = Thamnoptychia tabulate coral
 Stauriida - Stereolasmatidae
Stereolasma rectum Hall 1843 horn coral
 Stauriida - Amplexidae
 Stauriida - Zaphrentidae
Heliophyllum halli Edwards and Haime 1851 horn coral
Heliophyllum confluens Hall 1876 horn coral