Tellina Balthica Small 320×267 Medium 640×534 Large 1024×855 Download Tiff Original 2400×2004 | (709.4 KB) Description "Tellina Balthica— a common marine shell in the Boulder Clays." -Taylor, 1904 Keywords bivalve shell, boulder clay fossil, clam shell, mollusc, mollusk, Tellinaa Balthica Galleries Clams and Other Bivalves Source: Taylor, J. E. Geological Stories (London, England: Gibbings & Company, Limited, 1904)