Scutellina Haeckel 1896

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

The aboral side of the shell (test) has the off-centered petalidium, as seen clearly here in a dead specimen which has lost its spines. Note also that, unlike urchins which have 5, sand dollars have only 4 gonopores, visible around the star-shaped pattern in the center.

Green sea urchins; Levende zeeboontjes.

Eccentric Sand Dollar (Dendraster excentricus), Ganges Harbour, Salt Spring Island, British ColumbiaSource: http://en.wikipedia.org/wiki/File:Eccentric_sand_dollar.jpg

Encope cocosi, holotype, aboral spinesEncope cocosi, holotype NHMLA 39.1, Bahia Wafer, Isla de Cocos, Costa Rica