ammonites
†family Monotidae Fischer 1887 (clam)

Bivalvia - Pectinida

Parent taxon: Monotoidei according to J. G. Carter et al. 2011

Sister taxa: Buchioidea, Eurydesmatoidea, Oxytomoidea

Subtaxa: Eomonotis, Monotinae, Monotis, Otapiria, Otapiriinae, Praeotapiria

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Ecology: stationary epifaunal suspension feeder