Where: Tarija, Bolivia (21.3° S, 64.6° W: paleocoordinates 45.2° S, 129.8° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Baltograptus deflexus - Baltograptus minutus graptolite zone, Lower Member (Sella Formation), Arenig (478.6 - 466.0 Ma)
• middle Arenig (Baltographus deflexus / Baltograptus minutus zones)
• bed-level stratigraphic resolution
Environment/lithology: lithified, gray, green siltstone and lenticular sandstone
Size class: macrofossils
Collection methods: Beds 2 & 3 are 100 and 175 m up section, and have the identical fauna & lithology.
Primary reference: T. M. Sánchez and C. Babin. 2005. Lower Ordovician bivalves from southern Bolivia: paleobiogeographic affinities. Ameghiniana 42(3):559-566 [P. Wagner/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 57172: authorized by Pete Wagner, entered by Pete Wagner on 07.12.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Desmorthis segnis Havlicek and Branisa 1980 | |
Glyptorthis imbrex Havlicek and Branisa 1980 | |
Bivalvia | |
Natasia boliviensis Babin and Branisa 1987 clam | |
Redonia riojana Sanchez 1997 clam | |
Coxiconchia sellaensis n. sp.
Coxiconchia sellaensis n. sp. Sánchez and Babin 2005 clam | |
Pterobranchia | |
Baltograptus minutus graptolite |