Katahan (~97%) saking buron wantah invertebrata inggih punika buron sané nénten madué utawi nénten nglimbakang kolom vertebral (katah kabaos tulang tundun utawi tulang belakang),  sané mawit saking notochord.
The majority (~97%) of animal species are invertebrates, which are animals that neither possess nor develop a vertebral column (commonly known as a backbone or spine), derived from the notochord.