Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Echinodermata
Subphylum: Eleutherozoa
Superclassis: Cryptosyringida
Classis: Echinoidea
Subclassis: Euechinoidea
Superordo: Atelostomata
Ordo: Spatangoida
Subordo: Holasterina
Familia: Pourtalesiidae
Genera: Ceratophysa – Cystocrepis – Echinocrepis – Echinosigra – †Galeaster – Helgocystis – Pourtalesia – Rictocystis – Solenocystis – Spatagocystis
Name
Pourtalesiidae A.Agassiz, 1881
The pourtalesiids (Pourtalesiidae) are a family of irregular sea urchins that live in the deep sea. They are secondarily bilateral-symmetrical and like other representatives of the taxon Holasteroida they lack the lantern of Aristotle, which is typical for many other sea urchins. The genus Pourtalesia was named after Louis-François de Pourtalès who first collected these animals while dredging at a depth of 600 m. The family is known already from the Upper Cretaceous (Maastrichtian) and is distributed worldwide.[1]
Species and genera
Currently, there are 10 genera with 28 extant and 5 extinct species described.[2]
genus Ceratophysa Pomel, 1883
Ceratophysa ceratopyga (A. Agassiz, 1879)
Ceratophysa rosea (A. Agassiz, 1879)
genus Cystocrepis Mortensen, 1907
Cystocrepis setigera (A. Agassiz, 1898)
genus Echinocrepis A. Agassiz, 1879
Echinocrepis cuneata A. Agassiz, 1879
Echinocrepis rostrata Mironov, 1973
genus Echinosigra Mortensen, 1907
Echinosigra (Echinogutta) amphora Mironov, 1974
Echinosigra (Echinogutta) antarctica Mironov, 1974
Echinosigra (Echinogutta) fabrefacta Mironov, 1974
Echinosigra (Echinogutta) valvaedentata Mironov, 1974
Echinosigra (Echinosigra) mortensi Mironov, 1974
Echinosigra (Echinosigra) phiale (Thomson, 1873)
Echinosigra (Echinosigra) porrecta Mironov, 1974
Echinosigra (Echinosigra) vityazi Mironov, 1997
genus Galeaster Seunes, 1889 †
Galeaster carinatus Ravn, 1927 †
Galeaster dagestanensis Poslavskaya & Moskvin, 1960 †
Galeaster minor Poslavskaya, in Moskvin & Poslavskaya, 1949 †
Galeaster muntshiensis Tzaghareli, 1949 †
Galeaster sumbaricus Poslavskaya, in Moskvin & Poslavskaya, 1949 †
genus Helgocystis Mortensen, 1907
Helgocystis carinata (A. Agassiz, 1879)
genus Pourtalesia A. Agassiz, 1869
Pourtalesia alcocki Koehler, 1914
Pourtalesia aurorae Koehler, 1926
Pourtalesia debilis Koehler, 1926
Pourtalesia heptneri Mironov, 1978
Pourtalesia hispida A. Agassiz, 1897
Pourtalesia jeffreysi Thomson, 1873
Pourtalesia laguncula A. Agassiz, 1879
Pourtalesia miranda A. Agassiz, 1869
Pourtalesia tanneri A. Agassiz, 1898
Pourtalesia thomsoni Mironov, 1976
Pourtalesia vinogradovae Mironov, 1995
genus Rictocystis Mironov, 1996
Rictocystis jensenae Mironov, 1996
genus Solenocystis Mironov, 2008
Solenocystis imitans Mironov, 2008
genus Spatagocystis A. Agassiz, 1879
Spatagocystis challengeri A. Agassiz, 1879
References
"Pourtalesiidae - Natural History Museum".
"WoRMS - World Register of Marine Species - Pourtalesiidae A. Agassiz, 1881".
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