Pikaia Gracilens Black And White
Sept. 9, 2024
The Pikaia is one of the most primitive vertebrates known, and is the ancestor of all vertebrates. It was 38mm long. : r/Naturewasmetal Burgess Shale worm a distant human relative - RMOutlook.com Pikaia is one of the earliest members of the phylum Chordata – the category to which all animals with spinal cords belong. It swam close to the sea floor and m… Pikaia Gracilens Black And White