Septemchiton
Encyclopedia
Septemchiton is an extinct of polyplacophoran
mollusc. Septemchiton became extinct during the Ordovician
period.
Chiton
Chitons are small to large, primitive marine molluscs in the class Polyplacophora.There are 900 to 1,000 extant species of chitons in the class, which was formerly known as Amphineura....
mollusc. Septemchiton became extinct during the Ordovician
Ordovician
The Ordovician is a geologic period and system, the second of six of the Paleozoic Era, and covers the time between 488.3±1.7 to 443.7±1.5 million years ago . It follows the Cambrian Period and is followed by the Silurian Period...
period.