Toxopneustidae

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Toxopneustidae
Collector urchin.jpg
Tripneustes gratilla
Scientific classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Echinoidea
Superorder: Echinacea
Order: Camarodonta
Family: Toxopneustidae
Troschel, 1872 [1]
Genera
See text

Toxopneustidae is a family of globular sea urchins in the class Echinoidea.

Characteristics[edit]

All Camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the Toxopneustids are characterised by the peristome, or opening through the test, having a sharp margin with the buccal notches being prominent. The tubercles lack the crenulations or ring of cog-like structures that articulate with the spines in certain other families. The Aristotle's lantern, or jaw apparatus, has the keeled teeth and the epiphyses united above the foramen magnum, the V-shaped gap between the hemipyramids that support the lantern's tooth.[2]

Genera[edit]


See also[edit]

References[edit]

  1. ^ a b Toxopneustidae World Register of Marine Species. Retrieved 2011-08-27.
  2. ^ The Echinoid Directory The Natural History Museum. Retrieved 2011-08-27.