Avannacystis is a genus of extinct, spherical microorganism from the Middle Cambrian Henson Gletscher Formation of North Greenland, first found in 2006 and formally described in 2026. Its single species, A. polaris, forms vesicles 20 to 120 micrometers across, usually with a single surface dimple, and colonized the shells of the small shelly fossil Tesella in what appears to have been a parasitic or commensal relationship. Its true biological identity is unresolved, with researchers unable to rule out a fungal, algal or sulfur oxidizing bacterial origin.
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Source Wikipedia: AvannacystisLead paragraphtier 2Quote, Lead paragraph
Avannacystis is an extinct colonising microorganism from the middle Cambrian of Greenland, found on or within the shells of Tesella.
Sources
1. Wikidata (taxon extant/extinct status)
Wikimedia Foundation / Wikidata contributorsQ138002526, descriptionView the Source 2. Wikipedia: Avannacystis
WikipediaIntroduction
It is a monotypic genus, containing only Avannacystis polaris, and the true affinities remain unknown.
- In Group: Fossil Microorganism Genera, Wikipedia article lead
View the Source Wikidata: Avannacystis
Wikidata Q138002526, class allow-list match (w-wdresolver-0926)View the Source Reader Challenges (0)
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