Eurypterid-associated biota of the Knoydart Fmn. at Arisaig (Devonian of Canada)

Where: Nova Scotia, Canada (45.6° N, 62.0° W: paleocoordinates 33.7° S, 21.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Knoydart Formation, Lochkovian (419.2 - 410.8 Ma)

• formation-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; calcareous sandstone and calcareous shale

• "Environment: Nonmarine, fluvial, BA 0."

•SEP environmental call based on given info

• "Sandstone and shale with calcrete nodules (caliche)."

Primary reference: R. E. Plotnick. 1999. Habitat of Llandoverian-Lochkovian eurypterids. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities - a case study from the Silurian and Lower Devonian 106-136 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 14201: authorized by Michael Foote, entered by Michael Foote on 23.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Leperditicopida -
Herrmannina sp. Kegel 1933 ostracod
Xiphosura
 Xiphosurida - Pterygotidae
Pterygotidae indet. Clarke and Ruedemann 1912 eurypterid
Pterygotid fragments
Pteraspidomorphi
 Traquairaspidiformes -
"Traquairaspis sp." = Phialaspis
"Traquairaspis sp." = Phialaspis Wills 1935 jawless fish
 Pteraspidiformes - Pteraspididae
Protopteraspis sp. Leriche 1924 jawless fish
Chondrichthyes
 Acanthodei - Diplacanthidae
Climatius sp. Agassiz 1845 shark
 Polyspondyli - Onchidae
Onchus sp. Agassiz 1837 shark
Cornuata
 Cephalaspidiens - Cephalaspidae
Cephalaspis sp. Agassiz 1843