Taxonomia

• Lineage:
• Root
/
• Animalia
/
• Mollusca
/
• Gastropoda
/
• Cephalaspidea

Cephalaspidea (order)

• familyAglajidae
• familyAplustridae
• familyBullidae
• familyBullinidae
• familyCylichnidae
• familyDiaphanidae
• familyGastropteridae
• familyHaminoeidae
• familyPhilinidae
• familyRetusidae
• familyRingiculidae
• familyRuncinidae