Where: Sonora, Mexico (30.8° N, 112.6° W: paleocoordinates 11.7° N, 40.3° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Antimonio Formation, Wordian (266.9 - 264.3 Ma)
• "Monos Beds"; Anidanthus Zone incorporates two lowest zones in the succession
Environment/lithology: marine; limestone
Size class: macrofossils
Preservation: replaced with silica
Primary reference: G. A. Cooper, C. O. Dunbar, H. Duncan, A. K. Miller, and J. B. Knight. 1953. Permian fauna at El Antimonio, western Sonora, Mexico. Smithsonian Miscellaneous Collections 119(2):1-111 [D. Bottjer/M. Clapham/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 40834: authorized by David Bottjer, entered by Matthew Clapham on 01.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
|
Schizodus parvulus Cooper 1953 clam | |
| Rhynchonellata | |
|
Rhynchopora taylori Girty 1910 | |
? Spiriferella scobinoidea n. sp.
? Spiriferella scobinoidea n. sp. Cooper 1953 | |
| Strophomenata | |
Liosotella rugosa n. gen. n. sp., Liosotella angustata n. sp.
Liosotella rugosa n. gen. n. sp. Cooper 1953
Liosotella angustata n. sp. Cooper 1953 | |
"Dictyoclostus depressus" = Thamnosia depressa
"Dictyoclostus depressus" = Thamnosia depressa Cooper 1953 | |
"Anidanthus alatus n. sp." = Megousia alata
"Anidanthus alatus n. sp." = Megousia alata Cooper 1953 | |
Derbyia elongata, Derbyia arellanoi n. sp.
Derbyia elongata Cooper 1953
Derbyia arellanoi n. sp. Cooper 1953 | |
| Hexactinellida | |
|
| |