rotalid
/ˈrəʊtəlɪd/ /ˈrəʊt(ə)lɪd/Zoology and Palaeontology
noun
A foraminiferan of the order Rotaliida, suborder Rotaliina, or superfamily Rotaliacea, having a perforate calcareous test, typically in the form of a globular spiral.
- See note at rotaline..
adjective
Of, relating to, or characteristic of this group of foraminiferans.
Origin
Mid 19th century; earliest use found in Annals and Magazine of Natural History. From scientific Latin Rotalia + -id, after German Rotaliden, plural noun.