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 (Arisaig Group), 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)." Ami: "hard, compact, and breciciated volcanic ash bed."

Size class: macrofossils

Primary reference: H. M. Ami. 1901. Knoydart formation of Nova Scotia. Geological Society America Bulletin 12:301-312 [R. Plotnick/R. Plotnick]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

Show authors, comments, and common names
Petromyzontida
 Cephalaspidiformes - Cephalaspidae
Cephalaspis sp.
Cephalaspis sp. Agassiz 1835
Chondrichthyes
  -
Onchus sp.
Onchus sp. Agassiz 1837 spiny fish
 Climatiiformes - Climatiidae
Climatius sp.
Climatius sp. Agassiz 1845 spiny fish
Pteraspidomorpha
 Pteraspidiformes - Protopteraspididae
Protopteraspis sp.
Protopteraspis sp. Leriche 1924
 Cyathaspidei - Traquairaspidae
"Traquairaspis sp." = Phialaspis
"Traquairaspis sp." = Phialaspis Wills 1935
Ostracoda
 Leperditicopida - Leperditiidae
Herrmannina sp.
Herrmannina sp. Kegel 1933 ostracod
Euchelicerata
 Eurypterida - Pterygotidae
Pterygotidae indet.
Pterygotidae indet. Clarke and Ruedemann 1912 eurypterid
Pterygotid fragments