upper mound interval, Highway 77 (both sides), Arbuckle Mountains (Ordovician of the United States)

Where: Carter County, Oklahoma (34.4° N, 97.1° W: paleocoordinates 20.9° S, 84.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Hintzeia celsaora / Protopliomerella contracta trilobite zone, Calathium Zone Member (Kindblade Formation), Jefferson (485.4 - 468.1 Ma)

• upper mound interval, 460-500 ft. above the base of the formation

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified wackestone and lithified reef rocks

• numerous small algal-sponge buildups

Size classes: macrofossils, mesofossils

Preservation: cast, replaced with silica

Primary reference: D. F. Toomey and M. H. Nitecki. 1979. Organic buildups in the Lower Ordovician (Canadian) of Texas and Oklahoma. Fieldiana Geology 2:1-181 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 80101: authorized by Wolfgang Kiessling, entered by Uta Merkel on 03.04.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Renalcis
  -
Renalcis sp. Vologdin
Girvanella
  -
Girvanella sp. Nicholson and Etheridge 1878
unclassified
  -
Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
Gastropoda
 Murchisoniina - Hormotomidae
cf. Hormotoma sp. Salter 1859 snail
Cephalopoda
 Endocerida - Proterocameroceratidae
Mcqueenoceras sp. Ulrich and Foerste 1936
 Tarphycerida - Tarphyceratidae
Campbelloceras sp. Ulrich and Foerste 1936
 Tarphycerida - Estonioceratidae
Shumardoceras sp. Ulrich and Foerste 1936
Polyplacophora
 Paleoloricata - Gotlandochitonidae
Gotlandochiton hami Smith and Toomey 1964 chiton
Conodonta
  -
Conodonta indet. Eichenberg 1930 conodont
Demospongea
 Lithistida - Anthaspidellidae
Archaeoscyphia annulata Rigby 1973 demosponge
Ulvophyceae
  -
? Vermiporella sp. Stolley 1893
Chlorophyceae
  - Receptaculitidae
Calathium sp. Billings 1865