Where: Yakutiya, Russian Federation (71.0° N, 102.0° E: paleocoordinates 24.8° S, 6.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Lapworthella tortuosa small shelly zone, 18 Member (Medvezhyn Formation), Tommotian (525.5 - 521.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, ooidal, gray, green limestone

Size classes: mesofossils, microfossils

Preservation: cast, replaced with phosphate

Collection methods: bulk, chemical

• Full description in Rozonav et al. 1969 p. 48

Primary reference: A. Y. Rozanov, V. V. Missarzhevsky, N. A. Volkova, L. G. Voronova, I. N. Krylov, B.M. Keller, I. K. Korolyuk, K. Lendzion, R. Mikhnyar, N. G. Pykhova, and A. D. Sidorov. 1969. Tommotskiu jarus i problema nizhney granisty kembriya [The Tommotian Stage and the Cambrian lower Boundary problem]. Trudy Geoligske Institut Leningrad 206:1-379 [P. Wagner/P. Wagner/P. Novack-Gottshall]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 96400: authorized by Pete Wagner, entered by Pete Wagner on 06.06.2010

Creative Commons license: CC BY (attribution)