Paravendia
Genus of proarticulate
From Wikipedia, the free encyclopedia
Paravendia is an extinct genus of proarticulate from the late Ediacaran of Russia, around 553 Ma. It is a monotypic genus, containing only Paravendia janae.
| Paravendia Temporal range: Ediacaran, | |
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| Artists restoration of Paravendia janae. | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | †Proarticulata |
| Class: | †Vendiamorpha |
| Family: | †Vendiidae |
| Genus: | †Paravendia Ivantsov, 2004 |
| Species: | †P. janae |
| Binomial name | |
| †Paravendia janae Ivantsov, 2001 | |
Discovery
Fossil material of Paravendia was found in the Zimnegorsk locality in the Mezen Formation, White Sea, Arkhangelsk Region, Russia in 2001 and originally assigned to the genus Vendia as V. janae.[1] It was then re-described in 2004, due to its differing appearance and new material.[2]
Etymology
Description
Paravendia janae is an elongated ovoid proarticulate, getting up to 36 mm (1.4 in) in length and 18 mm (0.7 in) in width. It features the classic glide symmetry seen in proarticulates, and has four isomers on either side of the medial line, which have a maximum inclination of 30 degrees along this line. Each set of isomers also notably cover the previous set of isomers completely, converging on a single point at the rear of the organism.[1] It is also noted that the front set of isomers are larger than the rest, forming not only the marginal rim of the organism, but are also not segmented from each other.[1][2]
Distribution
Paravendia is primarily known from the Kimberella Lens and Yorgia Bed accumulations, which themselves are found within the Zimnegorsk locality of the Mezen Formation.[1]