Brazos River Kinkaid ammonite (Cretaceous of the United States)

Where: Falls County, Texas (31.1° N, 96.8° W: paleocoordinates 36.5° N, 74.9° W)

• coordinate estimated from map

When: Littig Member (Kincaid Formation), Maastrichtian (72.1 - 66.0 Ma)

• The rocks themselves are Danian, but the fossils are in Maastrichtian clasts.

Environment/lithology: marine; conglomerate

• interpreted as tsunami deposits
• terrigenous-clastic complex of conglomerates (with reworked clasts of Corsicana Formation) with glauconitic quartzose matrix, alternating with hummocky cross-stratified sandstones

Size class: macrofossils

Preservation: original aragonite

Primary reference: W.J. Kennedy, A.S. Gale, and T.A. Hansen. 2001. The last Maastrichtian ammonites from the Brazos River sections in Falls County, Texas. Cretaceous Research 22:163-171 [B. Seuss/B. Seuss]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 211604: authorized by Barbara Seuss, entered by Barbara Seuss on 23.07.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Scaphitidae
cf. Discoscaphites sp.
cf. Discoscaphites sp. Meek 1870 ammonite
 Ammonitida - Baculitidae
cf. Eubaculites sp.
cf. Eubaculites sp. Spath 1926 ammonite