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Quadrotheca Sysoyev 1958

Hyolitha - Orthothecida - Orthothecidae

PaleoDB taxon number: 7777

Parent taxon: Orthothecidae according to D. W. Fisher 1962

Sister taxa: Bactrotheca, Lenatheca, Lentitheca, Semielliptotheca, Trapezotheca

Subtaxa: Quadrotheca shipaiensis

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Ecology: stationary epifaunal suspension feeder