Hyperoartia
n 1: lampreys as distinguished from hagfishes [syn:
{Petromyzoniformes}, {suborder Petromyzoniformes},
{Hyperoartia}, {suborder Hyperoartia}]
Hyperoartia \Hy`per*o*ar"ti*a\, n. pl. [NL.] (Zool.)
An order of marsipobranchs including the lampreys. The
suckerlike moth contains numerous teeth; the nasal opening is
in the middle of the head above, but it does not connect with
the mouth. See {Cyclostoma}, and {Lamprey}.
[1913 Webster]