Locality 6 (Jacknife Ravine), Stereolasma shales, Mottville Member, Onondaga Co. (Devonian of the United States)

Where: Onondaga County, New York (43.0° N, 76.3° W: paleocoordinates 36.8° S, 24.0° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Mottville Member (Skaneateles Formation), Givetian (387.7 - 382.7 Ma)

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; shelly/skeletal, gray, calcareous shale

• gray fossiliferous, calcareous shale

Preservation: trace

Collection methods: bulk, surface (in situ),

Primary reference: T. X. Grasso. 1986. Redefinition, Stratigraphy and Depostional Environments of the Mottville Member (Hamilton Group) in Central and Eastern New York. In E. Landing, C. E. Brett (eds.), Dynamic Stratigraphy and Depositional Environments of the Hamilton Group (Middle Devonian) in New York State, Part I 457:5-31 [A. Miller/K. Layou/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 8925: authorized by Arnold Miller, entered by Karen Layou on 07.09.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• The relative abundance of each fossil taxon was established in the field by estimating the number of specimens observed in one hour from each richly fossiliferous horizon. The abundance of each taxon was then assigned a code number as follows: (1) 1 to 3 specimens, (2) 4 to 12 specimens, (3) 13 to 50 specimens, (4) 50 to 200 specimens, (5) 200 to 800 specimens, (6) over 800 specimens
Trilobita
 Phacopida - Acastidae
Greenops boothi trilobite
 Phacopida - Phacopidae
"Phacops rana" = Eldredgeops rana
"Phacops rana" = Eldredgeops rana Green 1832 trilobite
Cephalopoda
 Goniatitida - Tornoceratidae
Tornoceras sp. Hyatt 1884 ammonite
 Orthocerida - Orthoceratidae
Orthoceras sp. Breynius 1832
Gastropoda
 Euomphalina - Platyceratidae
Platyceras sp. Conrad 1840 snail
 Murchisoniina - Gosseletinidae
"Mourlonia itys" = Euryzone itys
"Mourlonia itys" = Euryzone itys Hall 1876 snail
 Murchisoniina - Eotomariidae
Bembexia sp. Oehlert and Oehlert 1888 snail
Bivalvia
 Nuculanida - Cucullellidae
Nuculites sp. Conrad 1841 clam
 Lucinida - Mactromyidae
Paracyclas sp. Hall 1843 clam
Rhynchonellata
 Athyridida - Nucleospiridae
Nucleospira sp. Hall 1859
 Athyridida - Meristellidae
 Spiriferida - Ambocoeliidae
Ambocoelia sp. Hall 1860
 Spiriferida - Spinocyrtiidae
 Orthida - Rhipidomellidae
Strophomenata
 Productida - Productellidae
 Strophomenida - Douvillinidae
 Strophomenida - Strophodontidae
Anthozoa
 Auloporida - Aulocystidae
Aulocystis sp. Schlüter 1885 tabulate coral
 Stauriida - Stereolasmatidae
Stereolasma sp. Simpson 1900 horn coral
Amplexiphyllum sp. Stumm 1949 horn coral