Eucidaris tribuloides was first described and classified by Jean Baptiste Lamarck in 1816 as Cidarites tribuloides.
The … See more

The slate pencil urchin can be found on both sides of the Atlantic, and throughout the Caribbean. On the western side of the Atlantic, the slate pencil urchin has been found as far north as Cape Hatteras, North Carolina, … See more

When its development is contrasted to the cidaroid sister subclass Euechinoidea, E. tribuloides becomes a very interesting organism from the standpoint of developmental and evolutionary biology. In euechinoid … See more

Reproduction in E. tribuloides seems to be sensitive to seasonal cycles, solar cycles, and the lunar cycle. In the Florida Keys, E. tribuloides was found to obtain peak gravidity in the late summer and early fall. Population… See more

• Erkenbrack EM (Nov 2016). "Divergence of ectodermal and mesodermal gene regulatory network linkages in early development of sea urchins". Proceedings of the National Academy of Sciences of the United Stat… See more