Mudstone Interval above Hills Gulch bed, Hills Gulch, Jaycox Member, Genesee Co. (Devonian of the United States)

Where: Genesee County, New York (43.0° N, 78.1° W: paleocoordinates 36.5° S, 25.6° W)

• coordinate based on political unit

• small collection-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 mudstone

• thin bedded mudstone

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 8983: authorized by Arnold Miller, entered by Karen Layou on 14.09.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Favositida - Micheliniidae
Antholites sp. Davis 1887 tabulate coral
 Favositida - Favositidae
Favosites milne-edswardii Lamarck 1816 tabulate coral
Favosites argus Hall 1876 tabulate coral
 Stauriida - Zaphrentidae
Heliophyllum halli Edwards and Haime 1851 horn coral
 Stauriida - Eridophyllidae
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
crinoid stems
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
fenestrates
Stenolaemata
 Cystoporata - Fistuliporidae
Fistuliporidae indet. Ulrich 1882
massive
 Cryptostomata - Rhinidictyidae
Stictopora sp. Hall 1847
Rhynchonellata
 Spiriferida - Mucrospiriferidae
 Spiriferida - Elythidae
Elita fimbriata Conrad 1842
 Spiriferida - Spinocyrtiidae
 Athyridida - Rhynchospirinidae
 Athyridida - Parazygidae
Parazyga hirsuta Hall 1857
 Athyridida - Meristellidae
Strophomenata
 Strophomenida - Douvillinidae
Bivalvia
 Pectinida - Aviculopectinidae
Aviculopecten sp. M'Coy 1851 scallop
 Pectinida - Pterinopectinidae
Pterinopecten sp. Hall 1883 scallop
 Modiomorphida - Modiomorphidae
Modiomorpha concentrica Conrad 1838 clam
Gastropoda
 Euomphalina - Platyceratidae
Platyceras sp. Conrad 1840 snail
Trilobita
 Phacopida - Phacopidae
"Phacops rana" = Eldredgeops rana
"Phacops rana" = Eldredgeops rana Green 1832 trilobite