Parechinidae Explained

The Parechinidae are a family of sea urchins in the class Echinoidea.

Characteristics

All camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the characteristics of the parechinids include the interambulacral plates being densely covered with tubercles with many subequal tubercles, and the buccal notches being insignificant in size. The globiferous pedicellariae between the spines have widely open blades each with many lateral teeth.^[1]

Genera

Image	Genus	Species
	Loxechinus Desor, 1856	Loxechinus albus
	Paracentrotus Mortensen, 1903b	Paracentrotus gaimardi (Blainville, 1825) Paracentrotus lividus (Lamarck, 1816)
	Parechinus Mortensen, 1903b	Parechinus angulosus
	Psammechinus L. Agassiz & Desor, 1846	Psammechinus microtuberculatus (Blainville, 1825) Psammechinus miliaris (P.L.S. Müller, 1771)

Fossils

• Isechinus Lambert, 1903

Notes and References

1. http://www.nhm.ac.uk/research-curation/research/projects/echinoid-directory/taxa/taxon.jsp?id=1190 The Echinoid Directory