What is Ectasian?
The '''Ectasian''' is the second [[geology|geological]] [[Period (geology)|period]] in the [[Mesoproterozoic]]. It began 1.4 [[billion]] years ago and ended at 1.2 billion years ago. The Ectasian came after the [[Calymmian]] and before the [[Stenian]]. This period shows for the first [[evidence]] of [[sexual reproduction]]. The 1.2 billion-year-old [[Hunting Formation]] on [[Somerset Island]], [[Canada]], is from the end of the Ectasian. It has the [[microfossil]]s of the [[Multicellular organism|multicellular]] [[filament]]s of ''Bangiomorpha pubescens'' (a type of [[red algae]]). This was the first organism that had sexual reproduction. {{Geologic history}} {{science-stub}} [[Category:Mesoproterozoic]]