Children (12 direct children, 17 direct and indirect children):
Echinometra lucunter
(tree size 2)
Echinometra mathaei
(tree size 3)
Burrowing urchin
Echinometra viridis
Echinometra vanbrunti
Echinometra insularis
Echinometra oblonga
Echinometra miocenica
Echinometra hondoana
Echinometra sp. a
Echinometra sp. c
Echinometra sp. e
Echinometra sp. ee