Semi-open circulatory system

Zoologists put all animals in the three groups: 1) Lack the circulatory system 2) Open circulatory system 3) Closed circulatory system But for the first time I use the term semi-open circulatory system and put the animals in four groups. 1) Lack the circulatory system 2) Open circulatory system 3) Semi-open circulatory system 4) Closed circulatory system Why did I do that? This classification helps to better reveal the relationship between the power of the circulatory system and the body size of the animals. This is a missing chain link in the classification of animals. Why scientists before I were unable to discover the relationship between power of circulatory system and size of the animals? Because they ignoring this chain link. I put the chain link in self-place and revealed the relationship between power of circulatory system and size of the animals.