Trying to explain the formation of the Ediacaran fossil Cloudina.
[sciencythoughts.blogspot.com]
Cloudina, and similar fossils such as Conotubus, Saarina, Multiconotubus, Costatubus, Zuunia, and Rajatubulus (collectively Cloudinomorphs) first appeared in the Latest Ediacaran, around 550 million years ago, and persisted into the Early Cambrian, vanishing around 520 million years ago. These fossils have a funnel-in-funnel organisation without transverse structures, and may be straight or sinuous. Some of these fossils are purely organic, others are mineralised, preserved as calcite, phosphate, limonite/pyrite, or silica. Many (but not all) of these fossils are phosphatised, with there being no clear relationship between phosphatisation and mineralisation.
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1 comment
Feel free to reply to any comment by clicking the "Reply" button.At first I thought those were photographs of Uranus, as opposed to Myanus.
It's times like these I regret never taking geology, I do like shiny things.
Willow_Wisp
Level 8
June 21, 2021
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