Systematics, distribution and paleoecology of the genera Genocidaris Agassiz, 1869 and Arbacina Pomel, 1869 (Trigonocidaridae, Echinoidea)

Neogene echinoids of Florida

“…Thus, the distinguishing traits of these two genera are not constant. However,Borghi et al (2005) came to no firm conclusions regarding the retention of either, or both, genera. If future authors decide the retention of both genera is untenable, some additional research will be required to decide which genus has precedence, as both date from 1869 (Arbacina Pomel, 1869; Genocidaris A.…”

“…Borghi et al (2005) discussed the similari-ties of Arbacina and Genocidaris and cast doubt on the validity of both genera. They documented indentations around the base of primary tubercles in representatives of Arbacina romana (Merian in Desor, 1858) from the lower Pleistocene of Sicily, and other localities.…”