Also known as USNM806m, Cerros de los Monos, El Antimonio, Sonora
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: Anidanthus zone, Monos Beds Member (Antimonio Formation), Wordian (266.9 - 264.3 Ma)
• "Monos Beds"; Anidanthus zone includes two lowest zones in the succession
• group of beds-level stratigraphic resolution
Environment/lithology: marine; concretionary, blue 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 40831: authorized by David Bottjer, entered by Matthew Clapham on 01.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Strophomenata | |
Derbyia elongata n. sp., Derbyia arellanoi
Derbyia elongata n. sp. Cooper 1953
Derbyia arellanoi Cooper 1953 | |
"Anidanthus alatus" = Megousia alata
"Anidanthus alatus" = Megousia alata Cooper 1953 | |
"Dictyoclostus depressus" = Thamnosia depressa
"Dictyoclostus depressus" = Thamnosia depressa Cooper 1953 | |
Liosotella rugosa Cooper 1953 | |
Rhynchonellata | |
Neospirifer sp. Fredericks 1919 | |
? Spiriferella scobinoidea Cooper 1953 | |
Rhynchopora taylori Girty 1910 | |
Scaphopoda | |
"Plagioglypta canna" = Prodentalium canna
"Plagioglypta canna" = Prodentalium canna White 1874 tusk shell | |
Bivalvia | |
Schizodus parvulus Cooper 1953 clam | |
Gastropoda | |
Orthonychia "sp. A" Hall 1843 snail | |
unclassified | |
Porifera indet. Grant 1836 | |
Foraminifera | |
Parafusulina sp. Dunbar and Skinner 1931 |