W of Volga P.O., S end of Steeprock Lake (Devonian of Canada)

Also known as Dawson Bay Fm, Manitoba

Where: Manitoba, Canada (51.6° N, 99.8° W: paleocoordinates 22.8° S, 36.6° W)

• coordinate based on political unit

When: D Member (Dawson Bay Formation), Middle Givetian (388.1 - 383.7 Ma)

• Uppermost of 4 unnamed members in formation; middle varcus conodont age; PJW The conodont ages have been updated.

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, yellow packstone

• Yellow-brown fossiliferous packstone

Size class: macrofossils

Primary reference: C. W. Stearn. 1996. Stromatoporoids from the Devonian (Eifelian to Lowest Frasnian) of Manitoba, Canada. Journal of Paleontology 70(2):196-217 [A. Miller/P. Novack-Gottshall/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 3636: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 05.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• Stromatoporoid systematics
unclassified
  -
amphiporida indet.
Several specimens
Stromatoporoidea
 Clathrodictyida - Anostylostromatidae
Anostylostroma bailliei stromatoporoid sponge
 Stromatoporellida - Trupetostromatidae
Hermatostroma cf. haultainense Stearn 1975 stromatoporoid sponge
"cf. H. haultainense" - originally entered as "Hermatostroma cf. H. haultainense"
 Stromatoporellida - Stromatoporellidae
Dendrostroma sp. Lecompte 1952 stromatoporoid sponge
Clathrocoilona sp. Yavorsky 1931 stromatoporoid sponge
"sp. A" - originally entered as "Clathrocoilona sp. A"
 Actinostromatida - Actinostromatidae
Actinostroma cf. filitextum stromatoporoid sponge
"cf. A. filitextum" - originally entered as "Actinostroma cf. A. filitextum"
Actinostroma expansum Hall and Whitfield 1873 stromatoporoid sponge
 Syringostromatida - Stachyoditidae
Stachyodes thomasclarki Stearn 1963 stromatoporoid sponge
Several specimens
Stachyodes costulata Lecompte 1952 stromatoporoid sponge
Several specimens
 Syringostromatida - Syringostromatidae
Parallelopora cf. paucicaniculata stromatoporoid sponge
"cf. P. paucicaniculata" - originally entered as "Parallelopora cf. P. paucicaniculata"
 Syringostromatida - Coenostromatidae
Coenostroma cf. monticuliferum Winchell 1866 stromatoporoid sponge
"cf. C. monticuliferum" - originally entered as "Coenostroma cf. C. monticuliferum"
Rhynchonellata
 Terebratulida - Stringocephalidae
Conodonta
  -