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@dmcediacaran.bsky.socialOct 9, 2026, 11:44 AM

This #FossilFriday is brought to you by the #Ediacaran animals of #Newfoundland. The oldest staurozoan cnidarian #Mamsetia manunis, its younger better preserved cousin #Haootia quadriformis and the 551 Ma stem #ctenophore #Edrathina obditchia alongside the candidate poriferans Thectardis & Lydonia.

@dmcediacaran.bsky.socialSep 25, 2026, 11:08 AM

One of the best bits of being a palaeobiologist is attempting to visualize our weird and wonderful creatures so here is a digital painting of my post-mortem reconstruction of #Edrathina next to the 🐡 #Haootia reconstruction of @bobnichollsart.bsky.social
if you want to read about them free then…

Artistic impression of a collapsed Ediacaran Edrathina showing iridescent collapsed conical calyx and numerous pinnate tentacles. lying on a patchy white microbial mat. lit by imagined diving light. (c) duncan mcilroyReconstruction of seafloor with Haootia (c) BobNicholls tetraradial haootia responding to a current surrounded by microbial matground Imagined artificial light with passing marine snow (white streaks)Artist reconstruction of Edrathina obditchia (c) duncan mcilroy imagined lighting from artificial dove light calyx conical with six tentacles with pinnae. cranes are inferred to have bee on the inner surface of the pinnae. Compare with the ancient benthic stem-ctenophores of the Cambrian
@dmcediacaran.bsky.socialSep 25, 2026, 11:08 AM

Happy #FossilFriday! The Ediacaran of #Newfoundland is famous for its animal fossils. The most iconic are the muscular #Staurozoa #Haootia and #Mamsetia and I think our new 551Ma #Edrathina is probably comparably important , being the oldest relative of comb-jellies, another early animal group.

retrodeformed holotype of Edrathina see strain ellipse branches arise from margin of a calyx which is triangular in shape interpreted as being a relative of the Ctenophores, the similarly shaped stem-ctenophores like Siphosauctum and Dinomischus Holotype of Haootia quadriformis linesr features are interpreted as muscle fibres. It has been interpreted as a crown group Cnidarian comparable to the modern Staurozoa note the tetra-radial form characteristic of that group