Echinoidea note details

Diagnosis
English
eng
All the ambulacral lunules as open slits in the margin. Genital pores four in number. Peristome and apical system excentric posteriorly.
Duncan, P. M. 1889. A revision of the genera and great groups of the Echinoidea. Journal of the Linnean Society, Zoology 23, 1-311. available online at https://www.biodiversitylibrary.org/page/31595445 OpenAccess publication
Date
action
by
2019-11-09 18:24:26Z
created