toothplateとは 意味・読み方・使い方

名詞

toothplate ‎(複数形 toothplates)

1. An internal structure projecting from the apertural lip of a foraminifer.
   • 1950, Amsterdam Naturalist - Volume 1, page 74:

     So it may be that the digestive protoplasm especially is directed by this row of toothplates. This may be the original meaning of the toothplate. In many more advanced species and genera the toothplate becomes complicated so that its use may be changed.

   • 1981, J.R. Haynes, Foraminifera, ISBN 134905397X, page 57:

     The majority are multiocular and characteristically the test has a restricted aperture and internal foramina and a toothplate is often present.

   • 2007, Barun K. Sen Gupta, Modern Foraminifera, ISBN 0306481049, page 29:

     The separation, based on multiple characters, is easy in typical cases, for instance between a high-trochospiral test with a loop-shaped aperture that projects internally as a toothplate (Buliminida) and a low-trochospiral test with a slit-like aperture and no toothplate (Totaliida), but there are many taxa whose placement in one of these two orders (using the 1992 scheme for suprageneric taxa, かつ the 1987 scheme for genera) appears to be highly subjective.

   • 2015, Vladimir Pokorný & ‎John W. Neale, Principles of Zoological Micropalaeontology, ISBN 1483222691:

     Ventrally the aperture is bordered by an incision, indicating the ventral attachment of the toothplate.