Hypertext Webster Gateway: "Spirifer"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Spirifer \Spi"ri*fer\, n. [NL., fr. L. spira a coil + ferreto
bear.] (Paleon.)
Any one of numerous species of fossil brachipods of the genus
{Spirifer}, or {Delthyris}, and allied genera, in which the
long calcareous supports of the arms form a large spiral, or
helix, on each side.
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.