it is perhaps the oldest form of animal life on Earth; 350 million year old sponge structures discovered in Canada.

These might be hints of the most established known type of creature life on Earth. Wipe like fossil designs that lived in the seas 890 million years prior have been found in northwestern Canada, an investigation distributed Wednesday July 28 in the diary Nature announced. They would surpass by 350 million years the most established known to date. "The most seasoned creatures that showed up in a transformative cycle were presumably wipes. Which isn't so astonishing given that wipes are the least complex creatures in the tree of creature life," said Elizabeth Turner. , educator at Canadian Laurentian University. 

In the event that this finding is affirmed, it would challenge the since quite a while ago held hypothesis that creatures just showed up after an enormous infusion of oxygen into the air and seas. These wipes are said to have lived around 90 million years before the oxygen level on Earth arrived at levels accepted to be fundamental for the presence of creature life. 

"On the off chance that my translation of the 'material' found is right, the main creatures showed up before this occasion and would have endured somewhat low oxygen levels contrasted with current conditions," said the teacher. She considers "conceivable that the principal creatures endured a low degree of oxygenation, similar to the case for certain current wipes". In any case, more unpredictable creature types could just show up after the Neoproterozoic oxygenation occasion.