Where: Sonora, Mexico (29.0° N, 110.7° W: paleocoordinates 9.7° N, 53.4° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Norian (228.0 - 208.5 Ma)
• Subunit 5 of Upper Triassic and Lower Jurassic unit, belongs either to the Barranca Group or intermediate between the Barranca Group and Antimonio Formation
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lime mudstone and wackestone
Size class: macrofossils
Primary reference: J. H. Stewart, R. Amaya-Martínez, R. G. Stamm, B. R. Wardlaw, G. D. Stanley, Jr. and C. H. Stevens. 1997. Stratigraphy and regional significance of Mississippian to Jurassic rocks in Sierra Santa Teresa, Sonora, Mexico. Revista Mexicana de Ciencias Geológicas 14(2):115-135 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 39179: authorized by Martin Aberhan, entered by Sabine Nürnberg on 23.05.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
| unclassified | |
"Epigondelella" sp. n. sp.
"Epigondelella" sp. n. sp. | |
| Reptilia | |
|
? Ichthyosauria indet. ichthyosaur | |
| Gastropoda | |
|
Gastropoda indet. Cuvier 1795 snail | |
| Bivalvia | |
|
Bivalvia indet. Linnaeus 1758 clam | |
| Anthozoa | |
|
Retiophyllia sp. Cuif 1966 stony coral | |
|
Chondrocoenia waltheri Frech 1890 stony coral | |
|
Astraeomorpha sonorensis Stanley 1994 stony coral | |
| Demospongiae | |
|
Nevadathalamia cylindrica Seilacher 1962 demosponge
Cinnabaria expansa Seilacher 1962 demosponge
"Fania sp." = Fanthalamia Senowbari-Daryan 1990 demosponge | |