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Bactrotheca Novak 1891

Hyolitha - Orthothecida - Orthothecidae

PaleoDB taxon number: 7675

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

Sister taxa: Cryptocaris, Lenatheca, Lentitheca, Quadrotheca, Semielliptotheca, Trapezotheca

Subtaxa: Bactrotheca emmonsi, Bactrotheca teres

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Type: Hyolithes teres

Ecology: stationary epifaunal suspension feeder