Andiva [SEP] parent taxon
Tribrachidium" and others.
Taxonomy and relationships.
Morphologically, "Andiva" most closely resembles "Ovatoscutum", "Chondroplon" and, more distantly, "Dickinsonia", as part of the proposed phylum Proarticulata. "Archaeaspinus" and "Cyanorus" have also been directly compared to it.
Jerzy Dzik includes "Andiva" in the Dipleurozoa, with "Chondroplon" as the closest relative, separated from "Dickinsonia" and closer to "Yorgia", "Praecambridium", "Archaeaspinus" and "Vendia
Andiva
Andiva ivantsovi is a Vendian fossil, presumed to be a bilaterian triploblastic animal, known from the Winter Coast, White Sea, Russia. It was first discovered in 1977, and described as a new species in a new genus by Mikhail Fedonkin only in 2002. It lived about 555 million years ago. Fossils of "Andiva" also occur in South Australia. All known fossils of "Andiva" are external molds.
Description.
"Andiva" was between long and from wide, with a bilaterally symmetrical