Echinoidea taxon details
original description
Stara, P.; Sanciu, L. (2014). Analysis of some astriclypeids echinoids (Echinoidea Clypeasteroidea). – In: Stara, P. (ed.): Studies on some astriclypeids (Echinoidea Clypeasteroida). <em>Biodiversity Journal.</em> 5/2: 291-358., available online at http://www.biodiversityjournal.com/pdf/5(2)_291-358.pdf page(s): 348 [details] Available for editors
From editor or global species database
Diagnosis 1. Subcircular or vaguely polygonal visceral hollow, with the floor reinforced by a network of ribs;
2. Petalodium small, PL about 30–48% of TL; petals always closed distally;
3. Pentastellate basicoronal circlet, with the interambulacral plates that can be elongated distally, usually separated from the post-basicoronal ones;
4. Posterior ambulacra with axial notches or lunules; the lunules shape may vary from ellipsoidal to narrow slits like, which may be open to the ambitus;
5. 3 to 6 couples of plates are present between petals tip and lunules/notches;
6. Periproct far from the rear margin almost 13 ÷ 26% of TL;
7. 3 or 4 post-basicoronal plates per column in inter. 5, with the first two partially paired and normally in meridoplacous contact with the relate ambulacrals;
8. Food grooves very branched and spread over all the oral surface;
9. Width at inter. 5 zone at ambitus about 30–38% of TL;
10. ß angle within 48° to 70°;
11. Tube-feet extending into interambulacral zones. [details]
Etymology Sculpsit = carved: the name derives from the rear notches that characterized the species Echinodiscus auritus Leske, 1778, transferred here to Sculpsitechinus auritus (Leske, 1778). [details]
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