28 genera are assigned to the class ACANTHODII

OrderGenusFOPFOSLOPLOS
ACANTHODIDAHaplacanthusDEmsi-uDFras
ACANTHODIDAProtogonacanthusDFras-lDFras-l
CLIMATIIFORMESCassidicepsDGediDGedi
CLIMATIIFORMESCheiracanthoidesDEife-uDFras-l
CLIMATIIFORMESGomphonchusSLudlSLudl
CLIMATIIFORMESGyracanthusDSiegCMosc-l
CLIMATIIFORMESHanilepisSLudlSLudl
CLIMATIIFORMESKathemacanthusDGediDGedi
CLIMATIIFORMESLupopsyrusDGediDGedi
CLIMATIIFORMESMarsdeniusCBash-lCBash-l
CLIMATIIFORMESNostolepisSWenlDGive-l
CLIMATIIFORMESPruemolepisDGedi-lCTour-l
ISCHNACANTHIDAApateacanthusDFrasDFras
ISCHNACANTHIDAAtopacanthusDEifeDFras-m
ISCHNACANTHIDADoliodusSLudl-uDGedi-l
ISCHNACANTHIDAIschnacanthusSPridDSieg-l
ISCHNACANTHIDAOnchusSLdov-uDFame
ISCHNACANTHIDAPersacanthusDFras-lDFras-m
ISCHNACANTHIDAPoracanthodesSLudlSLudl
uncertainBrochoadmonesDGediDGedi
uncertainGemuendolepisDEmsi-lDEmsi-l
uncertainGladiobranchusDGediDGedi
uncertainGomphacanthusSPridCMosc-u
uncertainHomacanthusDEifeCBash-u
uncertainMachaeracanthusDGedi-lDFras-l
uncertainNodocostaDEmsiDFras-l
uncertainNodonchusDSieg-lDSieg-l
uncertainOracanthusCTourCSerp-l

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FOP = Period of first occurrence
FOS = Stage of first occurrence
LOP = Period of last occurrence
LOS = Stage of last occurrence

Stage abbreviations follow Sepkoski (2002).