||Tet`ra*bran`chi*a"ta (?), n. pl. [NL. See
Tetra-, and Branchia.] (Zoöl.) An order of
Cephalopoda having four gills. Among living species it includes only the
pearly nautilus. Numerous genera and species are found in the fossil state,
such as Ammonites, Baculites, Orthoceras, etc.
||Tet`ra*bran`chi*a"ta (?), n. pl. [NL. See
Tetra-, and Branchia.] (Zoöl.) An order of
Cephalopoda having four gills. Among living species it includes only the
pearly nautilus. Numerous genera and species are found in the fossil state,
such as Ammonites, Baculites, Orthoceras, etc.