Where: Madhya Pradesh, India (24.5° N, 75.5° E: paleocoordinates 0.0° N, 0.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Suket Shale Formation (Semri Group), Statherian (1800.0 - 1600.0 Ma)

• Constrained by U-Pb SHRIMP radiometric dates of 1593 +/- 12 Ma (lower tuff RP/4) and 1602 +/- 10 Ma (upper tuff RP/5, several meters above RP/4) rom the top of the correlative Rampur Shale, and 1628 +/- 8 Ma from the underlying Deonar Porcellanite Formation (Rasmussen et al. 2002). Taking the two closely-spaced Rampur tuff beds together, Rasmussen et al. (2002) estimated an age of 1599 +/- 8 Ma for the top of the unit. Ray et al. (2002) dated two ash beds from the Deonar Formation using U-Pb TIMS, yielding 1631.2 +/- 5.6 Ma and 1630.7 +/- 0.8 Ma.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, green shale

Size class: microfossils

Preservation: original carbon

Collection methods: chemical, hydroflouric

Primary reference: P. K. Maithy and M. Shukla. 1977. Microbiota from the Suket Shales, Ramapura, Vindhyan System (late Pre-Cambrian), Madhya Pradesh. The Palaeobotanist 23:176-188 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 227768: authorized by Matthew Clapham, entered by Matthew Clapham on 29.10.2022

Creative Commons license: CC BY (attribution)