Tigers and goldsih share the same phyllum because they both posses the basic characteristics of animals in the phyllum chordata.These characteristics include;
Possession of notochord. The notochord is a rod-like structure that serves supportive functions and develops into the vertebral column in some group of chaordates.
Posession of post-anail tails which is an extension of the posterior end of the of the body.
Possession of dorsal, hollow nerve chord which eventually forms the brain and the central nervous system.
Possession of pharyngeal gill-slits, an opening that develops into gill arches in golfishes and jaws in tigers.
