Where: Utah County, Utah (40.3° N, 111.6° W: paleocoordinates 8.8° N, 35.2° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Bridal Veil Falls Member (Oquirrh Formation), Morrowan to Morrowan (323.2 - 286.0 Ma)
• The crinoid-bearing sequence occurs in the lower part of the Bridal Veil
•Falls Member (Baker and Crittenden, 1961) of the Oquirrh Formation. The
•member is of Morrowan age and occurs just above the Mississippian-Pennsylvanian
•Manning Canyon Shale. The Oquirrh Formation is some 26,000 feet
•thick and ranges from Morrowan to Wolfcampian in age. Only approximately the
•lower 1,000 feet is Morrowan.
Environment/lithology: marine; limestone
•rhythmic and consist of alternating thick-bedded limestone and thin-bedded
•shaly limestones. The articulated crinoids occur on the top surface of limestone
•mounds just below thin, muddy, limestone partings.
•Although articulated crinoid specimens are rare in lower Oquirrh strata,
•disarticulated ossicles are common and form an important part of some of the
•thick-bedded limestones.
Size classes: macrofossils, mesofossils
Collection methods: Collections code BYU
Primary reference: A.T. Washburn. 1968. Early Pennsylvanian crinoids from the south central Wasatch Mountains of central Utah. Brigham Young University Geology Studies 15:115-131 [G. Webster/G. Webster]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 124621: authorized by John Alroy, entered by Briony Mamo on 20.02.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
| Crinoidea | |
|
| |