496 ft. above base (Cambrian of the United States)

Where: McCulloch County, Texas (31.0° N, 99.3° W: paleocoordinates 17.5° S, 95.2° W)

When: Saukia trilobite zone, San Saba Member (Wilberns Formation), Trempealeauan (492.5 - 485.4 Ma)

• bed number is feet above base. Highly variable, has calcitic facies (North) and Dolomitic facies (South)

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, dolomitic, glauconitic, silty, sandy limestone

• Interval 490 - 516ft : Limestone, mostly very fine, some fine - and medium grained; mostly somber hues of pale yellowish brown, greenish cast where glauconitic; limonite common; dolomite pale to dark yellowish orange common as mottles and patches; beds mostly 6 to 12 inches. Silt contains various amounts of quartz and feldspar both authigenic and detrital

•Bed: fine grained, mottled by dolomite

Size class: macrofossils

Primary reference: V. E. Barnes and W. C. Bell. 1977. The Moore Hollow Group of Central Texas. Report of Investigation (88)1-169 [M. Patzkowsky/K. Irizarry/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 215998: authorized by Mark Patzkowsky, entered by Kayla Irizarry on 02.12.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Proetida - Hystricuridae
"Hystricurus millardensis" = Millardicurus millardensis
"Hystricurus millardensis" = Millardicurus millardensis Hintze 1953 trilobite
 Olenida - Olenidae
Jujuyaspis keideli
Jujuyaspis keideli Kobayashi 1936 trilobite
Kobayashai 1936
 Asaphida - Nileidae
"Symphysurina brevispicata" = Symphysurina walcotti
"Symphysurina brevispicata" = Symphysurina walcotti Kindle 1929 trilobite
Hintze 1952