Road River Formation, Northern Cordillera (Devonian of Canada)

Where: Northwest Territories, Canada (64.0° N, 133.0° W: paleocoordinates 2.6° N, 44.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Road River and /or Delorme Formation, Lochkovian (419.2 - 410.8 Ma)

• Listed as Upper Lochkovian. Skenidioides-Spirigerina-Vagrania community

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, shelly/skeletal limestone and poorly lithified, calcareous shale

• Notes that no species is dominant; "deep water facies"
• Dark, platy to thick-bedded, fossiliferous limestones and calcareous shales

Size classes: macrofossils, mesofossils

Primary reference: A.C. Lenz. 1976. Lower Devonian brachiopod communities of the northern Canadian Cordillera. Lethaia 9:19-27 [P. Novack-Gottshall/P. Hearn]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 75581: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 18.10.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• Skenidioides-Spirigerina-Vagrania community; Primarily focused on brachiopods, but notes that "gastropods are quite common throughout the sequence, while colonial corals and bivalves, though present, are relatively rare"
Show authors, comments, and common names
Ostracoda
 Myodocopida - Entomozoidae
Franklinella sp.
Franklinella sp. ostracod
"Abundant"
Rhynchonellata
 Pentamerida - Clorindidae
Clorinda sp.
Clorinda sp. Barrande 1879
"Lesser element"
 Pentamerida - Gypidulidae
Carinagypa sp.
Carinagypa sp. Johnson and Ludvigsen 1973
"Lesser element"
 Pentamerida - Parastrophinidae
"Grayina sp." = Anastrophia (Grayina)
"Grayina sp." = Anastrophia (Grayina)
"Lesser element"
 Rhynchonellida - Machaerariidae
Machaeraria sp.
Machaeraria sp. Cooper 1955
"Lesser element"
 Rhynchonellida - Leiorhynchidae
"Katunia sp." = Katuniella
"Katunia sp." = Katuniella
"Lesser element"
 Rhynchonellida - Camarotoechiidae
Linguopugnoides cf. carens
Linguopugnoides cf. carens
"Lesser element"
 Spiriferida - Ambocoeliidae
Metaplasia sp., Plicoplasia sp.
Metaplasia sp.
"Lesser element"
Plicoplasia sp.
"Abundant"
 Orthida - Hesperorthidae
Dolerorthis sp.
Dolerorthis sp. Schuchert and Cooper 1931
"Lesser element"
 Orthida - Draboviidae
Muriferella sp.
Muriferella sp.
"Abundant"
 Orthida - Dalmanellidae
Protocortezorthis sp.
 Atrypida - Atrypinidae
Spirigerina supramarginalis, Atrypina sp.
Spirigerina supramarginalis Khalfin 1948
"Abundant"
Atrypina sp. Hall and Clarke 1893
"Lesser element"
 Atrypida - Punctatrypidae
Reticulatrypa sp.
Reticulatrypa sp.
"Lesser element"
 Atrypida - Karpinskiidae
"Toquimaella sp." = Mimatrypa
"Toquimaella sp." = Mimatrypa
"Abundant"
Strophomenata
 Strophomenida - Douvillinidae
Phragmostrophia sp.
 Strophomenida - Amphistrophiidae
Mesodouvillina sp.
Mesodouvillina sp. Williams 1950
"Lesser element"
 Strophomenida - Chonetidae
Chonetes sp.
Chonetes sp. Fischer de Waldheim 1830
"Lesser element"
Bivalvia
  -
Bivalvia indet.
Bivalvia indet. Linnaeus 1758 clam
"Though present, are relatively rare"
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
"Quite common"
Anthozoa
  -
Anthozoa indet.
Anthozoa indet. Ehrenberg 1834
"Though present, are relatively rare"