Section D, Arbuckle Mountains, Oberg 1966, 49.1 (Ordovician of the United States)

Where: Pontotoc County, Oklahoma (34.6° N, 96.6° W: paleocoordinates 22.4° S, 70.2° W)

• outcrop-level geographic resolution

When: Amplexograptus manitoulinensis graptolite zone, Welling Formation, Katian (453.0 - 445.2 Ma)

• Given as Viola; however, Alberstadt's Unit Three is now the Welling formation

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal; calcareous limestone

• Coarse skeletal calcarenite, light-gray, slightly wavy-bedded, massive.

Size class: microfossils

Primary reference: W.C. Sweet. 1983. Upper Bromide Formation and Viola Group (Middle and Upper Ordovician) in Eastern Oklahoma - Part II - Conodont Biostratigraphy of Fite Formation. Oklahoma Geological Survey 132 [E. Jarochowska/E. Andres]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 212667: authorized by Emilia Jarochowska, entered by Elizabeth Andres on 18.08.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

• conodonts only.
Show authors, comments, and common names
Conodonta
 Protopanderodontida - Protopanderodontidae
Staufferella sp.
Staufferella sp. Sweet et al. 1975 conodont
 Protopanderodontida - Drepanoistodontidae
Drepanoistodus suberectus
Drepanoistodus suberectus Branson and Mehl 1933 conodont
 Panderodontida - Panderodontidae
Panderodus gracilis
Panderodus gracilis Branson and Mehl 1933 conodont
 Ozarkodinida -
Periodon grandis, Plectodina tenuis
Periodon grandis Ethington 1959 conodont
 Prioniodontida -
Phragmodus undatus
 Belodellida - Belodellidae
Coelocerodontus sp.
Coelocerodontus sp. Ethington 1959 conodont