Where: Bell County, Texas (31.0° N, 97.6° W: paleocoordinates 28.5° N, 57.9° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Walnut Clay Formation, Middle Albian (109.0 - 105.3 Ma)
• STRATIGRAPHIC RELATIONS: From the Walnut Clay, which overlies the Paluxy Sandstone and is overlain by the Comanche Peak Limestone or Goodland Limestone. It is a lateral correlative of the Keys Valley Marl. AGE: Middle Albian; Oxytropidoceras salasi zone. STRATIGRAPHIC POSITION: From unknown position within formation.
• group of beds-level stratigraphic resolution
Environment/lithology: offshore; lithified claystone
Size class: macrofossils
Preservation: cast, mold/impression
Collected by Adkins in 1929
• COLLECTOR: Adkins, 1929. REPOSITORY: Most University of Texas (UT), but also Bureau of Economic Geology, University of Texas (BEG).
Primary reference: K. Young. 1966. Texas Mojsisoviciziinae (Ammonoidea) and the zonation of the Fredricksburg. Geological Society of America Memoir 100:1-225 [A. Hendy/A. Hendy/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 82866: authorized by Austin Hendy, entered by Austin Hendy on 03.08.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Oxytropidoceras stenzeli ammonite
Oxytropidoceras salasi ammonite
Manuaniceras supani Lasswitz 1904 ammonite
Venezoliceras acutocarinatum Shumard 1853 ammonite |