Vologdinella

For the fossil algae genus, see Proaulopora.

Vologdinella Temporal range: Middle Cambrian [1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	incertae sedis
Family:	† Vologdinellidae Balashov in Ruzhentsev, 1962
Genus:	† Vologdinella Balashov in Ruzhentsev, 1962 [2]
Species:	†V. antiqua
Binomial name
†Vologdinella antiqua (Vologdin, 1931)
Synonyms
† Orthoceras? antiquusVologdin, 1931

Vologdinella is a poorly known genus of extinct animals of uncertain classification with small cylindrical shells. The animals are known from Middle Cambrian fossils from a Paleozoic limestone in the Chingiz Mountains of Kazakhstan. The genus was established by Russian paleontologist Zakhar Grigoryevich Balashov in 1962 for a single species, Vologdinella antiqua, which was originally described and illustrated as Orthoceras? antiquus by Aleksandr Grigoryevich Vologdin  [ ru ] in 1931.

The genus was historically classified as a cephalopod, though it has since been removed from this group. ^{[1] [3]} Vologdinella bears superficial resemblance to the Early Cambrian Volborthella . In the same work establishing the former genus, the two genera were classified within their own families – Vologdinellidae and Volborthellidae, respectively – within the order Volborthellida. Volborthella was later included in Agmata, an extinct phylum proposed by the paleontologist and geologist Ellis L. Yochelson  [ de ]. Vologdinella was also considered for inclusion in the Agmata, or in questionable synonymy with Volborthella, but a later study determined that the genus was not related to them. ^{[4] [5]}

See also

• Olenecoceras – another genus named by Balashov, also was formerly believed to be a cephalopod

References

1. Barskov, I. S.; Boiko, M. S.; Konovalova, V. A.; Leonova, T. B.; Nikolaeva, S. V. (2008). "Cephalopods in the marine ecosystems of the Paleozoic". Paleontological Journal. 42 (11): 1167. Bibcode:2008PalJ...42.1167B. doi:10.1134/S0031030108110014.
2. Balashov, Z.G. (1962). Отряд Volborthellida[Order Volborthellida]. In Ruzhentsev, V.E. (ed.). Основы Палеонтологии. Моллюски - Головоногие. I. Наутилоидеи, эндоцератоидеи, актиноцератоидеи, бактритоидеи, аммоноидеи (агониатиты, гониатиты, климении) [The basics of paleontology. Mollusks - Cephalopods. I. Nautiloidea, Endoceratoidea, Actinoceratoidea, Bactritoidea, Ammonoidea (Agoniatitida, Goniatitida, Clymeniida)] (in Russian). Moscow: Academy of Sciences of the USSR. p. 72.
3. Dzik, J. (1981). "Origin of the cephalopoda" (PDF). Acta Palaeontologica Polonica. 26 (2): 161–191. Archived from the original (PDF) on 2017-05-16. Retrieved 2018-03-21.
4. Yochelson, Ellis L. (1977). "Agmata, a Proposed Extinct Phylum of Early Cambrian Age". Journal of Paleontology . 51 (3): 437–454. JSTOR   1303675.
5. Yochelson, Ellis L.; Kisselev, Gennadii N. (2003). "Early Cambrian Salterella and Volborthella (Phylum Agmata) re-evaluated". Lethaia . 36 (1): 8–20. Bibcode:2003Letha..36....8Y. doi:10.1080/00241160310001254.