Station 8a, Caldwell Ranch, Bastrop Co., TX (Paleocene of the United States)

Where: Bastrop County, Texas (30.2° N, 97.5° W: paleocoordinates 35.1° N, 78.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Tehuacana Limestone Member (Kincaid Formation), Danian (66.0 - 61.6 Ma)

• Station 8 of Alexander (1934) includes two collections. The one recorded here ("8a") is upper Kincaid (Tehuacana Limestone Mbr) below the Vernericardia bulla bed; "8b" is basal Wills Point Fm. and is entered as a separate collection.

•Tehuacana Limestone Mbr. of Kincaid Fm. is Early Paleocene = Danian according to: Armstrong, A., Nyborg, T., Bishop, G.A., Morales, À.O. and Vega, F.J., 2009. Decapod crustaceans from the Paleocene of Central Texas, USA. Revista Mexicana de Ciencias Geológicas, 26(3), pp.745-763.

Environment/lithology: marginal marine; poorly lithified claystone

• The dark, fossiliferous, glauconitic clay at the base of the bank is rich in Cucullea macrodonta Whitfield and lies near the top of the Kincaid formation and about 25 feet below the strata exposed at station 8. Foraminifera and ostracodes are numerous, and this has been selected as the type locality for Brachycythere plena n. sp., B. interrasilis n. sp., Cythereis midwayensis n. sp. and Cytheromorpha scrobiculata n. sp.

Size class: microfossils

• Fossiliferous strata below the true Vernericardia bulla bed lie at the top of the Kincaid formation and carry numer- ous foraminifera and ostracodes

Collection methods: bulk, sieve

Primary reference: C. I. Alexander. 1934. Ostracoda of the Midway (Eocene) of Texas. Journal of Paleontology 8(2):206-237 [S. Cole/S. Cole/G. Hunt]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191249: authorized by Selina Cole, entered by Selina Cole on 18.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

• This references only lists taxa for which the locality is the type section. Other microfossils are reported to be present but not listed.
Ostracoda
 Podocopida - Cytheruridae
Cytheropteron (Cytheropteron) aligerum n. sp. Alexander 1934 ostracod
 Podocopa - Loxoconchidae
Loxoconcha prava n. sp. Alexander 1934 ostracod