Meet ikaria wariootia, ancient wormish creature roughly the size of a grain of rice. New research dubs it 1st ancestor on the tree of life for most animals including humans. Geologists unearthed fossilized remains of ikaria wariootia in Nilpena, South Australia. A 555 million year old common ancestor from the Ediacaran Period now considered the worm of life by California/Riverside scientists Scott Evans and Mary Droser.
Their research was published on March 23, 2020 in the peer reviewed journal Proceeding of the National Academy of Sciences. What makes this worm special? Two words – bilateral symmetry. Earliest evidence of an organism with distinct front and back, two symmetrical sides, an opening at either end connected by a gut – mandatory blueprint specifications for all lifeforms to come. An organized bilateral body plan by which all dinosaurs, insects, animals and humans rely on. Take a moment to read the link below.
Meanwhile, ponder a tiny worm lending substance to the story of evolution. Primordial ooze set evolution in motion, today the worm of life defines a solid marker in evolution. Delight in knowing the first ancestor in the tree of life was a worm. Outstanding in my books.