Green-gray shale association, Sappington Fm. (unit D) (Devonian of the United States)

Where: Montana (46.0° N, 112.5° W: paleocoordinates 12.4° S, 46.6° W)

• coordinate based on political unit

• basin-level geographic resolution

When: lower Palmatolepis expansa conodont zone, Unit D Member (Sappington Formation), Late/Upper Famennian (364.7 - 360.7 Ma)

• unit D bed

Environment/lithology: offshore; gray, green shale

• "green-gray shale. (2 in. thick); non-calcareous. shallow water, between black sh. lagoon and algal-sponge biostrome. cratonic shelf. BA2. May not be good (or perhaps should be combined with Sappington Black Shale"

Size class: macrofossils

Primary reference: J. K. Rigby and R. C. Gutschick. 1976. Two new Lower Paelozoic Hexactinellid sponges from Utah and Oklahoma. Journal of Paleontology 50(1):79-85 [M. Patzkowsky/P. Borkow/J. Ju]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 642: authorized by Jack Sepkoski, entered by Mike Sommers on 06.04.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• "J. Rodriguez and R.C. Gutschick, 1967. Brachiopods from the Sappington Fm. (Dev-Miss) of western Montana. J. Paleo. 41:364-384. Gutschick et al. 1962, 1976"
Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
pelmatozoans
Gastropoda
 Streptoneura -
? Archaeogastropoda indet.
? Archaeogastropoda indet. Thiele 1925 snail
>= 2 genera, snails - originally entered as "? Archaeogastropoda indet."
Bivalvia
 Cardiidia - Grammysiidae
Grammysia sp.
Grammysia sp. de Verneuil 1847 clam
Strophomenata
 Strophomenida - Chonetidae
Chonetes ? ornatus
Chonetes ? ornatus
originally entered as "Chonetes ? ornatus"
 Orthotetida - Schuchertellidae
Schuchertella lens
Schuchertella lens White 1862
Rhynchonellata
 Spiriferinida - Syringothyrididae
Syringothyris hannibalensis
Syringothyris hannibalensis
originally entered as "Syringorthyris hannibalensis"
Craniata
 Craniida - Craniidae
"Crania rowleyi" = Philhedra rowleyi
"Crania rowleyi" = Philhedra rowleyi Gurley 1883