The Collaborative International Dictionary
Gyrogonite
Gyrogonite \Gy*rog"o*nite\ (j[i^]*r[o^]g"[-o]*n[imac]t), n. [Gr.
gy^ros circle, ring + go`nos fruit.] (Paleon.)
The petrified fruit of the Chara hispida, a species of
stonewort. See Stonewort.
--Lyell.
Wiktionary
gyrogonite
n. (context paleontology English) The petrified fruit of (taxlink Chara hispida species), a species of stonewort.