Tetraparma gracilis


Classification: non_cocco -> Parmales -> Tetraparma -> Tetraparma gracilis
Sister taxa: T. catinifera, T. gracilis, T. insecta, T. pelagica, T. silverae, T. trullifera, T. sp.,

Taxonomy:

Citation: Tetraparma gracilis Konno, Ohira, Komuro, Harada, & Jordan 2007
Rank: species
Basionym: Tetraparma gracilis Konno, Ohira, Komuro, Harada, & Jordan 2007


Morphology remarks: Cells solitary, spherical, 2.3-2.5μm in diameter. Plates without papillae. All plates lack a central mound, but have a central process 0.7-0.8μm long. Processes on girdle and dorsal plates slender, those on shield and ventral plates appear bifurcate. Plates with a smooth, slightly raised margin. Shield plates ca.1.3-1.8μm in diameter. Triradiate girdle plates ca.1μm long (measured along the dorso-ventral plane, from end to central structure). Arms of dorsal plate, ca.1μm long. Ventral plate ca.1.2μm in diameter. [Konno et al. 2007]

Ecology & Biogeography: T. gracilis has only been recorded in the subarctic Pacific. [Konno et al. 2007]

Geological Range:
Last occurrence (top): Extant Data source: Konno et al. 2007
First occurrence (base): within no known fossil record modern (0.00-0.00Ma, base in stage). Data source: Konno et al. 2007

References:

Konno, S.; Ohira, R.; Komuro, C.; Harada, N. & Jordan, R.W., (2007). Six new taxa of subarctic Parmales (Chrysophyceae). Journal of Nannoplankton Research, 29(2): 108-128.


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Tetraparma gracilis compiled by Jeremy R. Young viewed: 23-11-2017

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