---

ACANTHODIFORMES

The tittlebat ropeIt is the group of the primitive fish which prospered in the Paleozoic era, and it is thought about with the oldest vertebrate having a chin of the top and bottom. It appeared in the Silurian approximately 400 million years ago and greeted the golden age around world fresh water area in Devonian period, but the power declined afterwards and became extinct by Permian Period. The tittlebat ropeIt is comprised of three orders of the Climatiiformes considered that the tittlebat rope runs late in a Carboniferous period from the middle of Silurian and was distributed over six continents except Africa and Greenland, the Acanthodiformes which hang it late in Permian Period from the latter period in Devonian period and were distributed over six continents except South America, the Ischnacanthiformes which hang it late in a Carboniferous period from Lower Silurian and were distributed over six continents except Africa.

NEXT to Tree of Fishes to HomePage