Araeosoma

Araeosoma Temporal range: Pliocene–Recent PreЄ Є O S D C P T J K Pg N

Araeosoma thetidis (New Zealand, 188m depth).
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Subclass:	Euechinoidea
Superorder:	Diadematacia
Order:	Echinothurioida
Genus:	Araeosoma Mortensen, 1903^[1]
Species
See text

Araeosoma is a genus of deep-sea sea urchins in the family Echinothuriidae.

Description and characteristics

Species in this genus are distinguished from other Echinothuriidae by their lack of ophicephalous pedicellariae (despite presence of dactylous ones), and the presence of prominent membranous gaps along horizontal sutures in interambulacral zones of both oral and aboral surfaces.^[2]

Taxonomy

The World Echinoidea Database recognises the following species:^[1]

Araeosoma alternatum Mortensen, 1934
Araeosoma anatirostrum Anderson, 2013
Araeosoma bakeri Anderson, 2013
Araeosoma belli Mortensen, 1903
Araeosoma bidentatum Anderson, 2013
Araeosoma brunnichi Ravn, 1928 †
Araeosoma coriaceum (A. Agassiz, 1879)
Araeosoma eurypatum A. Agassiz & H.L. Clark, 1909
Araeosoma fenestratum (Thomson, 1872)
Araeosoma leppienae Anderson, 2013
Araeosoma leptaleum A. Agassiz & H.L. Clark, 1909
Araeosoma migratum Anderson, 2013
Araeosoma mortenseni Ravn, 1928 †
Araeosoma owstoni Mortensen, 1904
Araeosoma parviungulatum Mortensen, 1934
Araeosoma paucispinum H.L. Clark, 1925
Araeosoma splendens Mortensen, 1934
Araeosoma tertii Anderson, 2013
Araeosoma tessellatum (A. Agassiz, 1879)
Araeosoma thetidis (H.L. Clark, 1909)
Araeosoma violaceum Mortensen, 1903

"†" means an extinct taxon.

References

1 2 Kroh, A. (2015), Araeosoma Mortensen, 1903. In: Kroh, A. & Mooi, R. (2015) World Echinoidea Database (World Register of Marine Species).
↑ "Araeosoma". Echinoid Directory.

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