Class Polyplacophora Rank Order | ||
Similar Chiton, Matthevia, Neoloricata, Tryblidiida, Halkieriid | ||
Multiplacophora is a stem-group of chitons with a number of plates arranged in 7 rows along the body. They date to at least the Upper Cambrian, but two lower Cambrian fossils- Ocruranus and Trachyplax - may extend the range downwards.
References
Multiplacophora Wikipedia(Text) CC BY-SA