Hills Gulch Bed, Canandaigua Lake Valley, Jaycox Member, Ontario Co., NY (Devonian of the United States)

Where: Ontario County, New York (42.8° N, 77.3° W: paleocoordinates 36.8° S, 24.9° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; gray, silty limestone

• silty limestone

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. unpublished M.S. thesis, State University of New York College at Fredonia 1-121 [A. Miller/K. Layou]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 9000: authorized by Arnold Miller, entered by Karen Layou on 14.09.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• This is a composite list from the four localities listed above.
Fistulioporidae indet.
branching forms
 Phacopida - Phacopidae
"Phacops rana" = Eldredgeops rana
"Phacops rana" = Eldredgeops rana Green 1832 trilobite
 Productida -
"Chonetacea indet." = Chonetoidea
"Chonetacea indet." = Chonetoidea Bronn 1862
 Orthotetida - Schuchertellidae
 Strophomenida - Douvillinidae
 Spiriferida - Spinocyrtiidae
 Spiriferida - Mucrospiriferidae
  - Tropidoleptidae
 Myalinida - Ambonychiidae
"Plethomytilus oviformis" = Mytilarca
"Plethomytilus oviformis" = Mytilarca clam
 Pectinida - Aviculopectinidae
Aviculopecten sp. M'Coy 1851 scallop
 Pectinida - Pterinopectinidae
Pterinopecten sp. Hall 1883 scallop
 Ostreida - Pterineidae
"Leiopteria sp." = Leptodesma (Leiopteria)
"Leiopteria sp." = Leptodesma (Leiopteria) Hall 1883 oyster
 Carditida - Crassatellidae
 Modiomorphida - Modiomorphidae
Goniophora sp. Phillips 1848 clam
 Protobranchia -
Palaeoneilo constricta Conrad 1842 clam
[entered as Paleoneilo constricta]
 Euomphalina - Platyceratidae
Platyceras sp., "Naticonema lineata" = Platyostoma lineata
Platyceras sp. Conrad 1840 snail
"Naticonema lineata" = Platyostoma lineata Conrad 1842 snail
 Murchisoniina - Gosseletinidae
Mourlonia sp. de Koninck 1883 snail
 Murchisoniina - Palaeozygopleuridae
Bryozoa indet. Ehrenberg 1831
 Cryptostomata - Rhinidictyidae
Stictopora sp. Hall 1847
Crinoidea indet. Miller 1821 Sea lily
crinoid stems and large holdfasts