The shales in which they occur are thus generally known as the Fucoid Beds, and, when found, are very good evidence of the horizon of the rocks.
This Quartzite, with its annelid borings and fucoid beds, is placed by Murchison in the Silurian series, the third in the geological record.
Vanuxemii is, I admit, more problematical; but Schimper could scarcely have supposed it to be a fern or a fucoid allied to Caulerpa had he observed that both in my species and the allied L.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "fucoid" in a variety of sentences. We hope that you will now be able to make sentences using this word.