a. [f. prec. + -AL.] = FUCOID A. b.
1854. Murchison, Siluria, viii. (ed. 5), 177. A thick development of fucoidal sandstones.
1857. H. Miller, Test. Rocks, xi. 465. They seemed fucoidal, and might of course belong to any age.
1872. Nicholson, Palæont., 477. The only apparently unequivocal plant of the Lower Cambrian period is the Eophyton of the Fucoidal Sandstone of Sweden.