Pourtalesiidae

Pourtalesiidae
Pourtalesia miranda
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Order:	Holasteroida
Family:	Pourtalesiidae 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 Pomel, 1883
  • Ceratophysa ceratopyga (A. Agassiz, 1879)
  • Ceratophysa rosea (A. Agassiz, 1879)
• genus Mortensen, 1907
  • (A. Agassiz, 1898)
• genus A. Agassiz, 1879
  • A. Agassiz, 1879
  • Mironov, 1973
• genus Mortensen, 1907
  • Mironov, 1974
  • Mironov, 1974
  • Mironov, 1974
  • Mironov, 1974
  • Mironov, 1974
  • (Thomson, 1873)
  • Mironov, 1974
  • Mironov, 1997
• genus Seunes, 1889 †
  • Ravn, 1927 †
  • Poslavskaya & Moskvin, 1960 †
  • Poslavskaya, in Moskvin & Poslavskaya, 1949 †
  • Tzaghareli, 1949 †
  • Poslavskaya, in Moskvin & Poslavskaya, 1949 †
• genus Mortensen, 1907
  • (A. Agassiz, 1879)
• genus Pourtalesia A. Agassiz, 1869
  • Koehler, 1914
  • Koehler, 1926
  • Koehler, 1926
  • Mironov, 1978
  • A. Agassiz, 1897
  • Thomson, 1873
  • A. Agassiz, 1879
  • Pourtalesia miranda A. Agassiz, 1869
  • A. Agassiz, 1898
  • Mironov, 1976
  • Mironov, 1995
• genus Mironov, 1996
  • Mironov, 1996
• genus Mironov, 2008
  • Mironov, 2008
• genus A. Agassiz, 1879
  • A. Agassiz, 1879

Sources[]