Howellella-Mesodouvillina-Platyorthis Community, Lochkovian, Nova Scotia (Devonian of Canada)

Where: Nova Scotia, Canada (45.9° N, 65.0° W: paleocoordinates 33.4° S, 24.2° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Lochkovian (419.2 - 410.8 Ma)

• "Gedinnian, possibly Late Gedinnian."

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."

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

 Productida - Chonetidae
Chonetes sp. Fischer de Waldheim 1830
genus name in quotes
 Orthotetida - Schuchertellidae
Schuchertella sp. Girty 1904
genus name in quotes
 Orthotetida - Chilidiopsidae
 Strophomenida - Amphistrophiidae
Mesodouvillina sp. Williams 1950
 Athyridida - Meristellidae
 Terebratulida - Meganterididae
 Spiriferinida - Cyrtinidae
? Cyrtina sp. Davidson 1858
 Spiriferida - Delthyrididae
Howellella sp. Kozlowski 1946
 Rhynchonellida - Camarotoechiidae
? Camarotoechia sp. Hall and Clarke 1893
 Rhynchonellida - Eatoniidae
  - Tropidoleptidae
 Orthida - Schizophoriidae
Schizophoria sp. King 1850
 Orthida - Proschizophoriidae
 Orthida - Platyorthidae