Also known as A-54 in Val'kov 1975
Where: Siberia, Russian Federation (70.7° N, 112.9° E: paleocoordinates 19.7° S, 8.9° W)
• outcrop-level geographic resolution
When: Calodiscus-Erbiella trilobite zone, Emyaksin Formation, Botomian (516.0 - 512.9 Ma)
• Inferred from several works. Also given as Emyaksin Formation.
• bed-level stratigraphic resolution
Environment/lithology: limestone
Size classes: macrofossils, microfossils
Preservation: cast
Reposited in the PIN
Primary reference: A. Kouchinsky, S. Bengtson, S. Clausen and M. J. Vendrasco. 2013. An early Cambrian fauna of skeletal fossils from the Emyaksin Formation, northern Siberia. Acta Palaeontologica Polonica 60(2):421-512 [P. Wagner/P. Wagner/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 174258: authorized by Pete Wagner, entered by Pete Wagner on 07.11.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Heteractinida | |
Heteractinida "indet." Hinde 1888 | |
Coeloscleritophora | |
Chancelloria spp. Walcott 1920 | |
Eocrinoidea | |
Eocrinoidea "plates" Jaekel 1918 | |
Edrioasteroidea | |
Edrioasteroidea "plates" Billings 1858 | |
Bivalvia | |
"Fordilla cf. sibirica" = Fordilla troyensis
"Fordilla cf. sibirica" = Fordilla troyensis Barrande 1881 clam | |
Helcionelloida | |
Pelagiella "sp. 1" Matthew 1895 The fossils described here are generally most similar to Pelagiella madianensis (Zhou and Xiao, 1984) illustrated in Gravestock et al. (2001: pl. 46), but the ornamentation of P. madianensis consists of granules arranged in spiral rows (Parkhaev in Gravestock et al. 2001). The ornamentation of Pelagiella sp. 1 herein consists of comarginal ribs similarly spaced as in the middle Cambrian Pelagiella sp. cf. Costipelagiella zazvorkai from the overlying Kuonamka Formation (Kouchinsky et al. 2011), but they do not appear to extend to the peripheral portion of the whorl.
Pelagiella "sp. 2" Matthew 1895 The fossils are discussed as Pelagiella cf. subangulata by Kouchinsky (2000a: 135, fig. 14).
| |
? Enigmaconus pyramidalis n. sp.
? Enigmaconus pyramidalis n. sp. Kouchinsky et al. 2013 | |
Mackinnonia anabarica Parkhaev 2005
Parailsanella "sp. 2" Voronova et al. 1987 | |
"Mellopegma uslonicum" = Mellopegma uslonica
"Mellopegma uslonicum" = Mellopegma uslonica Parkhaev 2004 | |
"Figurina cf. nana" = Capitoconus nana Zhou and Xiao 1984
Pararaconus sp. Bengtson et al. 1990
Leptostega hyperborea Parkhaev 2005 | |
Hyolitha | |
? Orthothecida "sp. indet. 1" Marek 1966
? Orthothecida "sp. indet. 2" Marek 1966 | |
"Lenatheca" groenlandica Poulsen 1932 | |
Triplicatella cf. peltata Skovsted et al. 2004
Triplicatella sinuosa Skovsted et al. 2004 | |
Conotheca spp. Rozanov et al. 1969
Conotheca cf. mammilata Rozanov et al. 1969 | |
Aetholicopalla adnata | |
Aetholicopalla adnata Bengston et al. 1990 |