Trisha Shetty (Editor)

Echinocyamidae

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Kingdom
  
Animalia

Class
  
Echinoidea

Suborder
  
Scutellina

Rank
  
Family

Phylum
  
Echinodermata

Order
  
Clypeasteroida

Infraorder
  
Laganiformes

Echinocyamidae

Similar
  
Rotulidae, Scutellidae, Echinocyamus, Neognathostomata, Echinocyamus pusillus

Echinocyamidae is a family of sand dollars. They are found mostly off the coast of Britain and Ireland and the North Sea, with scattered populations in the tropics.

Description

The are Laganiformes with:

  • simple radial internal buttresses along interambulacral margins;
  • periproct close to peristome and opening bounded by first and second paired post-basicoronal interambulacral plates
  • interambulacral zones terminating adapically in one or two single small plates
  • basicoronal circlet small and unspecialized
  • no food grooves

    • References

    Echinocyamidae Wikipedia
    (Text) CC BY-SA