Annapolis Valley (Devonian of Canada)

Also known as Howellella-Mesodouvillina-Platyorthis Community, Lochkovian, Nova Scotia

Where: Nova Scotia, Canada (45.0° N, 64.8° W: paleocoordinates 34.4° S, 24.0° W)

• coordinate estimated from map

• local area-level geographic resolution

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

• "Gedinnian, possibly Late Gedinnian." PJW: This should be Torbrook Formation.

Environment/lithology: transition zone or lower shoreface; shelly/skeletal, argillaceous sandstone and shelly/skeletal mudstone

• "Most of the shells are disarticulated indicating a certain amount of current activity and transport before final deposition." Community thought to be near BA 2/3 boundary.

•SEP environmental call based on given info

• "Shells occur as coquinas forming shell lenses in a moderately thick bedded sequence of subgraywackes and mudstones."

Size class: macrofossils

Collection methods: Two Nova Scotian collections combined.

Primary reference: A. J. Boucot. 1999. Some Wenlockian-Geddinian, chiefly brachiopod dominated communities of North America. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 549-591 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 24857: authorized by Michael Foote, entered by Michael Foote on 21.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Orthotetida - Schuchertellidae
Schuchertella sp.
Schuchertella sp. Girty 1904
genus name in quotes
 Orthotetida - Orthotetidae
"Hipparionyx cf. proximus" = Hipparionix
"Hipparionyx cf. proximus" = Hipparionix
 Strophomenida - Chonetidae
Chonetes sp.
Chonetes sp. Fischer de Waldheim 1830
genus name in quotes
 Strophomenida - Amphistrophiidae
Mesodouvillina sp.
Mesodouvillina sp. Williams 1950
Rhynchonellata
 Spiriferida - Delthyrididae
Howellella sp.
Howellella sp. Kozlowski 1946
  - Tropidoleptidae
Tropidoleptus sp.
 Spiriferinida - Cyrtinidae
? Cyrtina sp.
? Cyrtina sp. Davidson 1858
 Athyridida - Meristellidae
Meristella sp.
 Orthida - Schizophoriidae
Schizophoria sp.
Schizophoria sp. King 1850
 Orthida - Proschizophoriidae
Proschizophoria sp.
 Orthida - Platyorthidae
Platyorthis sp.
 Rhynchonellida - Camarotoechiidae
? Camarotoechia sp.
? Camarotoechia sp. Hall and Clarke 1893
 Rhynchonellida - Eatoniidae
? Costellirostra sp.
 Terebratulida - Meganterididae
Mutationella sp., Podolella sp.