''Cassidulina'' may refer to:
*
''Cassidulina'' (foraminifera), a genus in the family Cassidulinidae
*
Cassidulina (echinoderms)
''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 (biology), order of sea urchins. ...
, 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, but today, only seven extant species remain.
A 2019 phylogenetic systematics study by Souto et al. presented a revised c ...
{{taxonomy disambiguation