Category
page 1Arbacioida

Arbacia lixula
species of echinoderm

Arbacia punctulata
species of echinoderm
Arbaciidae
REDIRECT Arbacioida
Arbacia
thumb|upright=1|Test of an Arbacia lixula.
Arbacia is a genus of sea urchins, widespread in the Atlantic and eastern Pacific oceans.
Arbacioida
Arbacioida are an order of sea urchins, consisting of a single extant family, the Arbaciidae. They are distinguished from other sea urchins by the presence of five separate plates around the anus. Unlike their close relatives, the Salenioida, all of the tubercles on their tests are of similar size.
Coelopleurus
Coelopleurus is an extant genus of echinoids with fossil records dating back to the Eocene, with remains found in Europe and North America.
Coelopleurus floridanus
species of echinoderm
Arbacia stellata
species of echinoderm

Coelopleurus exquisitus
species of echinoderm
Arbaciella elegans
species of echinoderm
Arbacia spatuligera
species of echinoderm

Arbacia dufresnii
species of echinoderm