WIGLEY and STINTON: REMAINS FROM MARINE SEDIMENTS 



Figure 7. — Representative pelecypods from off southeastern Massachusetts. A - Arctica 

 islandica (X0.7); B - Astarte subequilatera (XI); C - Astarte 2(ndata (X2); D - 

 Cerastodervia pinnulatum (X2.6) ; E - Crenella glandida (X4) ; F - Modiolus modiolus 

 (X0.7) ; G - Nucula proxima (X5) ; H - Nucula proxima, interior (X5) ; I - Nucula 

 tenuis (X3.3) ; J - Nucula tenuis, interior (X3.3); K - Nuculana acuta (X4); L - 

 Phacoides filosus (X2.6) ; M - Periploma papyracea (X2.6) ; N - Periploma papyracea, 

 interior (X2.6); O - Placopecten magellanicus, left valve (X0.7); P - Placopecten 

 magellanicus, right valve (XI); Q - Thyasira trviimiata (X3.3); R - Venericardia 

 borealis (X1.3); S - Yoldia sapotilla (X2) ; T - Yoldia sapotilla, interior (X2). 



