论文信息 - Mouth frame of the ophiuroid Onychaster

Mouth frame of the ophiuroid Onychaster

The three species of Onychaster can be readily distinguished by the configuration and arrangement of plates composing the mouth frame. No phylogenetic trends are apparent.

P. Goldberg | R. V. Kesling | P. Bjork

[1] N. Lane,et al. Crawfordsville (Indiana) Crinoid Studies , 1964 .

[2] I. B. Sollas. On Onychaster, a Carboniferous Brittle-Star , 1914 .