Locality 4. North wall of Glenwood Canyon directly above Hwy. 6 (Devonian of the United States)

Also known as Broken Rib Member, Dyer Fm., Locality 4, Garfield Co., CO

Where: Garfield County, Colorado (39.7° N, 107.5° W: paleocoordinates 19.4° S, 48.8° W)

• coordinate based on nearby landmark

• 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 a 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 been since named the Broken Rib Member. Refer to Webster et al., 1999.

• member-level stratigraphic resolution

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

Size class: macrofossils

Collection methods: Collected by the authors in 1951.

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 3625: authorized by Arnold Miller, entered by Andrew Webber on 05.08.1999, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• Webster et al., 1999, for a more detailed list of echinoderms from this member.
Coleolus
  - Coleolidae
Coleolus sp. Hall 1879
Anthozoa
 Stauriida - Acrophyllidae
Acrophyllidae indet. Stumm 1949 horn coral
originally entered as "Acrophyllid coral"
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Stenolaemata
 Cryptostomata - Fenestellidae
Rhynchonellata
 Orthida - Schizophoriidae
"Schizophoria australis" = Schizophoria (Schizophoria) australis
"Schizophoria australis" = Schizophoria (Schizophoria) australis Kindle 1909
 Rhynchonellida - Petasmariidae
 Rhynchonellida - Trigonirhynchiidae
"Camarotoechia sobrina" = Ptychomalotoechia sobrina
"Camarotoechia sobrina" = Ptychomalotoechia sobrina Stainbrook 1947
 Rhynchonellida - Leiorhynchidae
 Athyridida - Athyrididae
 Spiriferida - Cyrtospiriferidae
Cyrtiopsis sp. n. sp.
"sp. n." - originally entered as "Cyrtiopsis sp. n."
 Spiriferida - Strophopleuridae
Strophomenata
 Orthotetida - Schuchertellidae
Schuchertella sp. Girty 1904
 Productida - Productellidae
 Productida - Productidae
Gastropoda
 Bellerophontida -
""Bellerophontoidea" indet." = Bellerophontoidea
""Bellerophontoidea" indet." = Bellerophontoidea M'Coy 1851 snail
 Euomphalina - Euomphalidae
Straparollus sp. de Montfort 1810 snail
 Euomphalina - Palaeotrochidae
"Platyceras (Platyostoma) cf. gigantea" = Floyda concentrica
"Platyceras (Platyostoma) cf. gigantea" = Floyda concentrica Webster 1905 snail
originally entered as "Platyceras cf. gigantea"
 Euomphalina - Platyceratidae
Platyceras sp. Conrad 1840 snail
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
Cephalopoda
  -
Cephalopoda indet. Cuvier 1797
originally entered as "Gomphoceroid cephalopod"
 Nautiloidea -
Nautiloidea indet. Agassiz 1847 nautiloid
Tentaculita
 Cornulitida - Cornulitidae
Cornulites sp. Schlotheim 1820
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily