echinites

I give to this second kind of fossil the name of _silicious fossils_, and examples of this kind are the different oysters ( 'des ostracites'), many terebratulæ ( 'des terebratulites'), trigoniæ, ammonites, echinites, encrinites, etc.

Lamarck, the Founder of Evolution His Life and Work 1872

The crinoidea and echinites were also extremely numerous.

Vestiges of the Natural History of Creation Robert Chambers 1836