Where: Ontario, Canada (43.1° N, 81.8° W: paleocoordinates 36.7° S, 28.6° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Arkona Shale Formation, Middle Devonian (393.3 - 382.7 Ma)

• Specimen from about 25 to 30 feet below the top of the formation, Middle Devonian Arkona Shale.

• bed-level stratigraphic resolution

Environment/lithology: marine; shale

Size class: macrofossils

Collected by John and Michael Topor and Joseph Koniecki; reposited in the UMMP

Primary reference: R. V. Kesling. 1982. Arkonaster, a new multi-armed starfish from the Middle Devonian Arkonia shale of Ontario. Contributions from the Museum of Paleontology, University of Michigan 26(6):83-115 [L. Villier/L. Villier]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 193693: authorized by Phil Novack-Gottshall, entered by Phil Novack-Gottshall on 03.06.2018

Creative Commons license: CC BY (attribution)