Where: California (37.0° N, 118.0° W: paleocoordinates 6.8° S, 81.9° W)
• coordinate estimated from map
• hand sample-level geographic resolution
When: Barrel Spring Formation, Caradoc (458.4 - 449.5 Ma)
• Listed as Lower Caradoc; local series:Porterfield age; C37, C40
• group of beds-level stratigraphic resolution
Environment/lithology: lagoonal; poorly lithified, lenticular shale and lithified, lenticular mudstone
Size classes: macrofossils, mesofossils
Collected by Wilfrid Davis; reposited in the USNM
Primary reference: R. J. Ross, Jr. and C. R. Longwell. 1964. Middle and Lower Ordovician Formations in Southernmost Nevada and Adjacent California. United States Geological Survey Bulletin 1180-C:C1-C101 [S. Finnegan/S. Finnegan/J. Marcot]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 77182: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 28.12.2007, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Orthambonites sp. Pander 1830
Orthambonites decipiens Phleger 1933 | |
Hesperorthis cf. dubia Cooper 1956 | |
Bryozoa | |
Bryozoa indet. Ehrenberg 1831 | |
Trilobita | |
"Isotelus spurius" = Anataphrus spurius
"Isotelus spurius" = Anataphrus spurius Phleger 1933 trilobite | |
Ampyx sp. Dalman 1827 trilobite
Lonchodomas sp. Angelin 1854 trilobite |