"Emarginula reticulata." -Taylor, 1904

Emarginula reticulata

"Emarginula reticulata." -Taylor, 1904

"The fresh-water mussel...the inside of the shell (left valve)...u., The umbo; L., the ligament; c.t., lateral teeth; a.a., anterior adductor mark; a.r., mark of protractor of the foot; p.l., pallial line; p.a., posterior adductor mark; p.r., mark of posterior retractor of the foot; A., anterior (the blunter end); P., posterior." -Thomson, 1916

Freshwater Mussel

"The fresh-water mussel...the inside of the shell (left valve)...u., The umbo; L., the ligament; c.t.,…

"The fresh-water mussel...the outside of the shell (right valve)...u., The umbo; L., the ligament; l.g., a line of growth; A., anterior (the blunter end); P., posterior; V., ventral." -Thomson, 1916

Freshwater Mussel

"The fresh-water mussel...the outside of the shell (right valve)...u., The umbo; L., the ligament; l.g.,…

"Pecten varius." -Taylor, 1904

Pecten varius

"Pecten varius." -Taylor, 1904

"Pectunculus glycimeris." -Taylor, 1904

Pectunculus glycimeris

"Pectunculus glycimeris." -Taylor, 1904

"Tellina Balthica— a common marine shell in the Boulder Clays." -Taylor, 1904

Tellina Balthica

"Tellina Balthica— a common marine shell in the Boulder Clays." -Taylor, 1904

"Tellina crassa." -Taylor, 1904

Tellina crassa

"Tellina crassa." -Taylor, 1904