What kind of heart and circulation does anyone have?

For the first time, the circulatory system appeared in annelids – it is closed, but there is no heart. Chordates have evolved from the ancient annelids. Their circulatory system is also closed, but it became more complicated gradually:
– fish – 1 circle of blood circulation, 2-chambered heart;
– amphibians – 2 circles of blood circulation, 3-chambered heart;
– reptiles – 2 circles of blood circulation, the heart is 3-chambered, but in the ventricle there is an incomplete septum;
– birds and mammals have 2 circles of blood circulation and a 4-chambered heart.