Also known as Station 14204

Where: Wayne County, Mississippi (31.7° N, 88.7° W: paleocoordinates 32.0° N, 82.2° W)

• coordinate estimated from map

When: Chickasawhay Formation (Vicksburg Group), Rupelian (33.9 - 28.1 Ma)

• Chione bed of Chickasawhay marl, which is one of the lowest beds. Poag (1972) placed the Chickasawhay stage (including the formation) in the "Globigerina angulisuturalis and Globigerina angulisuturalis/Globorotalia opima opima Zones, as defined by Blow (1969, zones N.2 and N.3)." According to Miller et al. (2008), "the base of the Chickasawhay Formation is a major disconformity that represents the major mid-Oligocene unconformity of Vail et al. (1977). This surface was dated precisely for the first time at the St. Stephens quarry (Alabama) by Miller et al. (1993) as late chron C11r (ca. 30.1 Ma) and correlated with the oxygen isotope increase associated with Oi2 (Miller et al., 1993)." Denison et al. (1993) also inferred a late Rupelian age for the lower part of the formation from strontium isotopes. This is consistent with planktonic foram N2 within the formation, which is latest Rupelian (chron C10).

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified limestone

Size class: macrofossils

Collected by Richards H.G.; reposited in the ANSP

Primary reference: A. K. Miller. 1947. Tertiary nautiloids of the Americas. Geological Society of America Memoir 23:1-234 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 169205: authorized by Matthew Clapham, entered by Kristina Okamoto on 10.05.2015, edited by Mark Uhen

Creative Commons license: CC BY (attribution)