Locality 6. North wall of Sweetwater Creek Caynon near junction of Turret Creek (Devonian of the United States)

Also known as Broken Rib Member, Dyer Fm., Locality 6, Garfield Co., CO

Where: Garfield County, Colorado (39.8° N, 107.2° W: paleocoordinates 19.6° S, 48.5° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Lower Palmatolepis gracilis expansa conodont zone, Broken Rib Member (Dyer Formation), Late/Upper Famennian (364.7 - 360.7 Ma)

• This publication lists the Dyer as member of the Chaffee Formation. The Dyer is now a formation of the Chaffee Group. The limestone beds in which this fauna was collected have since been named the Broken Rib Member. Refer to Webster et al., 1999.

• member-level stratigraphic resolution

Environment/lithology: offshore shelf; gray, cherty/siliceous carbonate and dolomite

Size class: macrofossils

Collection methods: Collected by the authors in 1948.

Primary reference: N. W. Bass and S. A. Northrop. 1963. Geology of Glenwood Springs Quadrangle and Vicinity Northwestern Colorado. U. S. Geological Survey Bulletin 1142-J:J1-J74 [A. Miller/A. Webber/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 3660: authorized by Arnold Miller, entered by Andrew Webber on 06.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• See Webster et al., 1999, for a detailed list of echinoderms from this member.
Rhynchonellata
 Athyridida - Rhynchospirinidae
Rhynchospirina aff. scansa
originally entered as "Rhynchospirina aff. scansa"
 Athyridida - Athyrididae
 Orthida - Schizophoriidae
"Schizophoria australis" = Schizophoria (Schizophoria) australis
"Schizophoria australis" = Schizophoria (Schizophoria) australis Kindle 1909
 Rhynchonellida - Leiorhynchidae
 Rhynchonellida - Petasmariidae
 Spiriferida -
Spiriferida indet. Waagen 1883
originally entered as "Meristelloid brachiopod"
 Spiriferida - Cyrtospiriferidae
Cyrtiopsis sp. n. sp.
"sp. n." - originally entered as "Cyrtiopsis sp. n."
Strophomenata
 Productida - Productidae
Leioproductus coloradensis, "Bispinoproductus varispinosus" = Leioproductus varispinosus
"Bispinoproductus varispinosus" = Leioproductus varispinosus Stainbrook 1947
 Productida - Araksalosiidae
"Heteralosia nupera" = Acanthatia nupera
"Heteralosia nupera" = Acanthatia nupera Stainbrook 1947
Bivalvia
 Pectinida - Aviculopectinidae
Aviculopecten sp. n. sp. M'Coy 1851 scallop
"sp. n." A. indet. sp. n. - originally entered as "Aviculopecten sp. n."