Pontella - AbsoluteAstronomy.com

Pontella is a marine copepod

Copepod

Copepods are a group of small crustaceans found in the sea and nearly every freshwater habitat. Some species are planktonic , some are benthic , and some continental species may live in limno-terrestrial habitats and other wet terrestrial places, such as swamps, under leaf fall in wet forests,...

genus in the family Pontellidae

Pontellidae

Pontellidae is a copepod family in the order Calanoida, containing the following genera:*Anomalocera Templeton, 1837*Calanopia Dana, 1852*Epilabidocera C. B. Wilson, 1932*Isocope Brady, 1915*Ivellopsis Claus, 1893...

. It is an organism that bears three lenses in the eye

Eye

Eyes are organs that detect light and convert it into electro-chemical impulses in neurons. The simplest photoreceptors in conscious vision connect light to movement...

. The outer has a parabolic

Parabola

In mathematics, the parabola is a conic section, the intersection of a right circular conical surface and a plane parallel to a generating straight line of that surface...

surface, countering the effects of spherical aberration

Spherical aberration

thumb|right|Spherical aberration. A perfect lens focuses all incoming rays to a point on the [[Optical axis|optic axis]]. A real lens with spherical surfaces suffers from spherical aberration: it focuses rays more tightly if they enter it far from the optic axis than if they enter closer to the...

while allowing a sharp image to be formed.

Pontella includes the following species:

Pontella agassizii Giesbrecht, 1895
Pontella alata A. Scott, 1909
Pontella andersoni Sewell, 1912
Pontella argentea Dana, 1849
Pontella asymmetrica Heinrich, 1967
Pontella atlantica (Milne-Edwards, 1840)
Pontella bairdii Lubbock, 1853
Pontella barbata Tanaka, 1936
Pontella bifurcata Tanaka, 1936
Pontella bonei Mulyadi, 2003
Pontella brachiata Dana, 1849
Pontella brachyura (Kroyer, 1849)
Pontella brevicornis (Lubbock, 1857)
Pontella cerami A. Scott, 1909
Pontella chierchiae Giesbrecht, 1889
Pontella contracta Dana, 1849
Pontella cristata Kramer, 1896
Pontella curta Dana, 1849
Pontella curticornis Dana, 1852
Pontella danae Giesbrecht, 1889
Pontella darwinii (Lubbock, 1853)
Pontella denticauda A. Scott, 1909
Pontella detonsa Dana, 1849
Pontella diagonalis C. B. Wilson, 1950
Pontella edwardsii (Kroyer, 1849)
Pontella elegans (Claus, 1892)
Pontella elephas Brady, 1883
Pontella emerita Dana, 1849
Pontella eugeniae Leuckart, 1859
Pontella fera Dana, 1849
Pontella forcipata Tanaka, 1936
Pontella forficula A. Scott, 1909
Pontella gaboonensis Scott]] T., 1894

Pontella gracilis C. B. Wilson, 1950

Pontella hanloni Greenwood, 1979

Pontella helgolandica Claus, 1863

Pontella indica Chiba, 1956

Pontella inermis Brady, 1883

Pontella investigatoris Sewell, 1912

Pontella karachiensis Rehman, 1973

Pontella kieferi Pesta, 1933

Pontella kleini Mulyadi, 2003

Pontella labuanensis Mulyadi, 1997

Pontella latifurca Chen & Zhang, 1965

Pontella lobiancoi (Canu, 1888)

Pontella longipedata Sato, 1913

Pontella marplatensis Ramirez, 1966

Pontella meadii Wheeler, 1900

Pontella mediterranea (Claus, 1863)

Pontella mimocerami Fleminger, 1957

Pontella natalis Brady, 1915

Pontella novaezealandiae Farran, 1929

Pontella patagoniensis (Lubbock, 1853)

Pontella pattersonii (Templeton, 1837)

Pontella pennata C. B. Wilson, 1932

Pontella perspicax Dana, 1849

Pontella plumata Dana, 1849

Pontella polydactyla Fleminger, 1957

Pontella princeps Dana, 1849

Pontella protensa Dana, 1849

Pontella pulvinata C. B. Wilson, 1950

Pontella raynaudii (Milne-Edwards, 1840)

Pontella regalis Dana, 1849

Pontella resnautica Oliveira, 1946

Pontella rostraticauda Ohtsuka, Fleminger & Onbé, 1987

Pontella rubescens Dana, 1849

Pontella savignyi (Milne-Edwards, 1828)

Pontella securifer Brady, 1883

Pontella setosa Lubbock, 1856

Pontella sewelli Heinrich, 1987

Pontella sinica Chen & Zhang, 1965

Pontella speciosa Dana, 1849

Pontella spinicauda Mori, 1937

Pontella spinipedata Heinrich, 1989

Pontella spinipes Giesbrecht, 1889

Pontella strenua Dana, 1849

Pontella suchumica Kritchagin, 1873

Pontella surrecta C. B. Wilson, 1950

Pontella tenuiremis Giesbrecht, 1889

Pontella tridactyla Shen & Lee, 1963

Pontella turgida Dana, 1849

Pontella valida Dana, 1852

Pontella vervoorti Mulyadi, 2003

Pontella whiteleggei Kramer, 1896

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