Vologdinella Temporal range:
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Scientific classification
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Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | incertae sedis |
Family: | †
Vologdinellidae Balashov in Ruzhentsev, 1962 |
Genus: | †
Vologdinella Balashov in Ruzhentsev, 1962 [2] |
Species: | †V. antiqua
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Binomial name | |
†Vologdinella antiqua (Vologdin, 1931)
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Synonyms | |
† Orthoceras? antiquus Vologdin, 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 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 . 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]