Cassianellidae
... that the extinct, Triassic, bivalve family Cassianellidae may have evolved from the family Bakevelliidae, which survived longer into the Eocene?
... that the extinct, <a href="./Triassic" id="mwCok" rel="mw:WikiLink" title="Triassic">Triassic</a>, bivalve family <b id="mwCoo"><a href="./Cassianellidae" id="mwCos" rel="mw:WikiLink" title="Cassianellidae">Cassianellidae</a></b> may have evolved from the family <a href="./Bakevelliidae" id="mwCow" rel="mw:WikiLink" title="Bakevelliidae">Bakevelliidae</a>, which survived longer into the <a href="./Eocene" id="mwCo0" rel="mw:WikiLink" title="Eocene">Eocene</a>?