Recently discovered microfossils date back half a billion years. Resembling modern-day algae, they provide insight into early life in our oceans.
A scientist from the University of Leicester has discovered a new type of fossil that reveals life in the oceans half a billion years ago., resemble modern-day algae and might also give scientists an insight into the climate changes that affected our oceans.
The importance of the fossils lies in their immense age. They lived around the time when animals were first evolving, during the Cambrian 'explosion' of life -- and this is probably no coincidence. In today's world, phytoplankton provides the fundamental food source for almost all life in the oceans. However, the modern groups of phytoplankton evolved relatively recently, and we do not know which groups inhabited the Cambrian oceans.
The new discovery will prompt a re-think on other early microfossils. For years, scientists have thought that the spiny balls found individually were the dormant cysts of single-celled life.
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