18 True Mytilus Mercenaria Neotrigonia Velesunio Hyridella Castalia Triplodon Etheria Glochidia morphology (shape) Chambardia Lamproscapha Mar. margaritifera M. monodonta. Lamell. corrianus L. generosus Parreysia olivacea P. tavoyensis Coelatura Oxynaia Scables Radiatula Unio Lasmigona Pyganodon Quadrula Amblema Lampsillis Truncilla Potamilus Ensidens Contra contradens Contradens sp. Trapezoideus Gonided Potomida Lamprotula Pronodularia Pilsbryoconcha Lasidia S-shaped hooked P. vondembushianus P.cambodjensis 19884 T 000 ODHyriidae 10000 L DOT 1000 Unhooked Hooked w/ spines Axe-head shaped Asymmetrical 00.000 Parreysiinae DO 00) Pseudodon cumingil 00000 P.mouhtil 177 17 inoscularis 771004 Lasidium-bearing Mussels Margaritiferidae 000 Unioninae Ambleminae Rectidentinae Gonideinae Given the above phylogeny, is the following statement true or false? Rectidentinae mussels are more closely related to Margaritiferidae mussels than they are to Lasidium-bearing mussels.

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