Thyrostraca
plural noun
Thy·ros·tra·ca
thīˈrästrəkə
in some especially former classifications
: a subclass of Crustacea coextensive with Cirripedia
thyrostracan adjective or noun
(ˈ)⸗¦⸗⸗kən
Word History
Etymology
New Latin, from thyro- (from Greek thyra door, opening) + Greek ostraka, plural of ostrakon shell