// Workers AI · dad joke modeWhat did the Strongylocentrotidae say? I'm shell-shocked.

Strongylocentrotidae
red sea urchin (Mesocentrotus franciscanus)
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Order:	Camarodonta
Infraorder:	Echinidea
Family:	Strongylocentrotidae Gregory, 1900
Genera
Hemicentrotus Mesocentrotus Pseudocentrotus Strongylocentrotus

The Strongylocentrotidae are a family of sea urchins in the order Camarodonta.

Genera

Image	Genus	Species
	Hemicentrotus Mortensen, 1942	Hemicentrotus pulcherrimus (A. Agassiz, 1863)
	Mesocentrotus Tatarenko & Poltaraus, 1993	Mesocentrotus franciscanus (A. Agassiz, 1863) Mesocentrotus nudus (A. Agassiz, 1863)
	Pseudocentrotus Mortensen, 1903b	Pseudocentrotus depressus (A. Agassiz, 1863) Pseudocentrotus stenoporus Nisiyama, 1966 †
	Strongylocentrotus Brandt, 1835	Strongylocentrotus antiquus Philip, 1965 † Strongylocentrotus djakonovi Baranova, 1957 Strongylocentrotus droebachiensis (Müller, 1776) Strongylocentrotus fragilis Jackson, 1912 Strongylocentrotus intermedius (A. Agassiz, 1863) Strongylocentrotus magistrus Nisiyama, 1966 † Strongylocentrotus octoporus Nisiyama, 1966 † Strongylocentrotus pallidus (Sars G.O., 1871) Strongylocentrotus polyacanthus A. Agassizz & H.L. Clark, 1907 Strongylocentrotus polyacathus A. Agassiz & H.L. Clark, 1907 Strongylocentrotus pulchellus A. Agassiz & H.L. Clark, 1907 Strongylocentrotus purpuratus (Stimpson, 1857)