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<dc:title xml:lang="la">Echinoidea</dc:title>

  
<dc:description xml:lang="en">Phylum Echinodermata
Classe Echinoidea

Living in marine habitats.

1) External, with podia and spines, and internal anatomy of a regular echinoid: Aristotle’s lantern; digestive system with anus in the periproct, at the aboral pole. Water-vascular system with ring canal, Polian vesicles, radial canals, ampullae and podia, stone canal, which leads to madreporite (m). Pedicellaria (p).
2) Oral view with teeth of the lantern, oral tube feet, peristomial membrane with gills. 
3) Aboral view.
4) Spine.
</dc:description>

  
<dc:description xml:lang="it">Tavola 5
Tavola parietale.
Phylum Echinodermata
Classe Echinoidea

Marini.

1) Struttura esterna, con pedicelli e spine, ed interna di echinoideo regolare: lanterna di Aristotele; sistema digerente, con ano nel periprocto, al polo aborale. Sistema ambulacrale con canale anulare, vescicole del Poli, canali radiali, ampolle e pedicelli, canale petroso, che sbocca  nel madreporite (m). Pedicellaria (p).
2) Visione orale con bocca e denti della lanterna, pedicelli buccali, membrana peristomale con branchie. 
3) Visione aborale. 
4) Spina.</dc:description>

  
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<dc:language>la</dc:language>

  
<edm:type>IMAGE</edm:type>

  
<dc:type xml:lang="en">Image</dc:type>

  
<dc:subject xml:lang="it">Tavola didattica</dc:subject>

  
<dc:creator>Pfurtscheller, Paul</dc:creator>

  
<dc:contributor>Michelon, Nicola</dc:contributor>

  
<dc:contributor>Castelli, Stefano</dc:contributor>

  
<dc:contributor> Biblioteca Vallisneri - Università di Padova</dc:contributor>

  
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