Also known as A-50 of Val'kov (1975), samples 5a/1, 5a/1.2, 5a/5, 5a/6, 5a/9, 5a/10.5, 5a/15, 5a/15.5, 5a/17.5, 5a/18.5, 5a/34.5, 5a/34.75
Where: Krasnoyarsk Krai, Russian Federation (70.7° N, 112.8° E: paleocoordinates 23.5° S, 10.1° W)
• coordinate stated in text
When: Emyaksin Formation, Tommotian (525.5 - 521.0 Ma)
• Stage 2. Emyaksin is equivalent to Tommotian and upper Terreneuvian
Environment/lithology: gray, green, red lime mudstone and glauconitic, pebbly wackestone
Size class: mesofossils
Preservation: mold/impression, replaced with phosphate
Collected by Artem Kouchinsky, Stefan Bengston in 1996
• Reposited in Swedish Museum of Natural History (SMNH)
Primary reference: A. Kouchinsky, S. Bengtson, E. Landing, M. Steiner, M. Vendrasco and K. Ziegler. 2017. Terreneuvian stratigraphy and faunas from the Anabar Uplift, Siberia. Acta Palaeontologica Polonica 62(2):311-440 [P. Wagner/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 233198: authorized by Phil Novack-Gottshall, entered by Phil Novack-Gottshall on 20.01.2024
Creative Commons license: CC BY (attribution)
Taxonomic list
| Hyolitha | |
|
Orthothecida "operculum type C" Marek 1966
Cupitheca sp. Duan 1984 | |
|
Conotheca cf. mammilata Rozanov et al. 1969 | |
|
Turcutheca sp. Rozanov et al. 1969
Khetatheca cotuiensis Syssoiev 1959 | |
| unclassified | |
|
Mollusca "problematic shell" Linnaeus 1758 Some similarity to "chitin-like scleritome of Ocruranus finial"
| |
| Helcionelloida | |
Securiconus cf. simus, Tuoraconus sp., Oelandiella korobkovi, Obtusoconus vostokovae, Obtusoconus cf. mirabilis, Anabarella plana
Securiconus cf. simus Luo et al. 1982
Tuoraconus sp. Missarzhevsky 1989
Oelandiella korobkovi Vostokova 1962
Obtusoconus vostokovae Vassiljeva 1990
Obtusoconus cf. mirabilis Vasil'eva 1990
Anabarella plana Vostokova 1962 | |
|
Aldanella cf. sibirica Parkhaev and Karlova 2011
Aldanella attleborensis Shaler and Foerste 1888 | |
| Aculifera | |
|
Halkieria sp. Poulsen 1967 | |
|
Lopochites sp. Qian 1977 | |
| Coeloscleritophora | |
|
Chancelloria symmetrica Vassiljeva 1985 | |
| Fomitchella | |
|
Fomitchella acinaciformis Missarzhevsky 1977
Fomitchella aff. acinaciformis Missarzhevsky 1977 | |
| Fomitchella infundibuliformis | |
"Fomitchella infundibuliformis" = Fomitchella infundabiliformis, "Fomitchella aff. infundibuliformis" = Fomitchella infundabiliformis
"Fomitchella infundibuliformis" = Fomitchella infundabiliformis Rozanov et al. 1969
"Fomitchella aff. infundibuliformis" = Fomitchella infundabiliformis Rozanov et al. 1969 | |
| Scyphozoa | |
Selindeochrea cf. tecta, Selindeochrea tripartita, Selindeochrea ternaria, Selindeochrea missarzhevskyi, Anabarites tristichus, Anabarites kelleri, Anabarites hexasulcatus, Anabarites biplicatus, Anabarites compositus, Anabarites hariolus
Selindeochrea cf. tecta Val'kov 1982 jellyfish
Selindeochrea tripartita Rozanov et al. 1969 jellyfish
Selindeochrea ternaria Rozanov et al. 1969 jellyfish
Selindeochrea missarzhevskyi Vasil’eva 1986 jellyfish
Anabarites tristichus Rozanov et al. 1969 jellyfish
Anabarites kelleri Missarzhevsky 1989 jellyfish
Anabarites hexasulcatus Missarzhevsky 1974 jellyfish
Anabarites biplicatus Missarzhevsky 1989 jellyfish
Anabarites compositus Rozanov et al. 1969 jellyfish
Anabarites hariolus Val'kov 1987 jellyfish | |
|
Hyolithellus sp. Billings 1872
Hyolithellus vladimirovae Rozanov and Missarzhevsky 1966 | |
| Foraminifera | |
|
Platysolenites antiquissimus Eichwald 1860 | |