Posts Tagged ‘WFS: Ariyalur Fossils : INOCERAMUS’

WFS: Ariyalur Fossils : INOCERAMUS

Some species of clams (bivalves) grew to giant size in the late Cretaceous, attaining diameters of four feet or more. In cross section, these shells are composed of prismatic (calcitic) crystals. The inner, nacreous (Mother of Pearl) layer of the shell (composed of aragonite) was usually dissolved during fossilization and the outer portion is usually […]