Where: Chile (20.1° S, 69.3° W: paleocoordinates 32.4° S, 44.2° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Juan de Morales Formation, Kungurian (279.3 - 272.3 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: lagoonal or restricted shallow subtidal; lithified marl
•interpreted as bioclastic bars.
Size class: macrofossils
Preservation: replaced with silica
Primary reference: E. Díaz-Martínez, B. Mamet, P. E. Isaacson and G. W. Grader. 2000. Permian marine sedimentation in northern Chile: new paleontological evidence from the Juan de Morales Foramtion, and regional paleogeographic implications. Journal of South American Earth Sciences 13:511-525 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 40948: authorized by David Bottjer, entered by Matthew Clapham on 04.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Strophomenata | |
Waagenoconcha humboldti d'Orbigny 1842 |