Arkona Shale, Ausable River (Devonian to of Canada)

Where: Ontario, Canada (43.1° N, 81.8° W: paleocoordinates 36.6° S, 28.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Arkona Shale Formation, Eifelian to Eifelian (393.3 - 382.7 Ma)

• Listed as Upper Eifelian\Lower Givetian

• formation-level stratigraphic resolution

Environment/lithology: poorly lithified, gray shale and lithified, lenticular, shelly/skeletal limestone

• Gray shale and lenses of gray, crinoidal limestone

Size classes: macrofossils, mesofossils

Collection methods: Actually five closely-spaced localities by river; sampled approx. 25 feet below top of formation

Primary reference: G. M. Ehlers and E.P. Wright. 1959. Leiopteria rafinesquii Hall and a new species of the genus from the Thedford-Arkona region of southwestern Ontario. Contributions from the Museum of Paleontology 15:1-13 [P. Novack-Gottshall/P. Hearn]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 75583: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 18.10.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
  -
Ostracoda indet. Latreille 1802 ostracod
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites attenuatus
M. arkonensis and T. attenuatus are two
Strophomenata
 Productida - Chonetidae
Chonetes sp. Fischer de Waldheim 1830
 Orthotetida - Schuchertellidae
Schuchertella sp. Girty 1904
Rhynchonellata
 Spiriferida - Mucrospiriferidae
Bivalvia
 Ostreida - Pterineidae
"Leiopteria ausablensis" = Leptodesma (Leiopteria)
"Leiopteria ausablensis" = Leptodesma (Leiopteria) oyster
Gastropoda
 Euomphalina - Platyceratidae
"Platyceras arkonense" = Spinyplatyceras arkonense
"Platyceras arkonense" = Spinyplatyceras arkonense Shimer and Grabau 1902 snail
Platyceratoids are coprophagous on crinoids
Crinoidea
 Monobathrida -