Cassidulina Marshallana
''Cassidulina'' may refer to: * ''Cassidulina'' (foraminifera), a genus in the family Cassidulinidae * Cassidulina (echinoderm), a superfamily of sea urchins in the order Cassiduloida Cassiduloida is an order of sea urchins. The group was extremely diverse with many families and species during the Mesozoic The Mesozoic Era is the Era (geology), era of Earth's Geologic time scale, geological history, lasting from about , com ...

Cassidulina (foraminifera)
''Cassidulina'' is a genus of foraminifera described in the Treatise Part C. ( Loeblich & Tappan, 1964), as having a free, lenticular test, with central boss of clear calcite on either side. Chambers are biserially arranged, enrolled planispirally with a subangular to keeled periphery. The wall is calcareous, hyaline (glassy), optically granular, perforate. The surface is smooth with a polished appearance. Sutures are radial to oblique, straight or curved. The aperture is a narrow arched slip at the base of the apertural face, partly closed by an apertural place. (Loeblich and Tappan 1988) The taxonomy of ''Cassidulina'' is rather stable, and is included in the Cassidulinidae at least as far back as Cushman, 1950. Related genera include '' Cassidulinella'', '' Favocassidulina'', '' Globocassidulina'', and '' Buriela''. ''Cassidulina'', itself, is cosmopolitan, with a stratigraphic range extending from the Upper Eocene to recent. Species * '' Cassidulina albemariensis'' M ...
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Cassidulina (echinoderm)
''Cassidulina'' may refer to: * ''Cassidulina'' (foraminifera), a genus in the family Cassidulinidae * Cassidulina (echinoderms), a superfamily of sea urchins in the order Cassiduloida Cassiduloida is an order of sea urchins. The group was extremely diverse with many families and species during the Mesozoic The Mesozoic Era is the Era (geology), era of Earth's Geologic time scale, geological history, lasting from about , com ...