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Tuberculodinium wallii
Tuberculodinium wallii Drugg, 1970
Holotype: Drugg, 1970, fig.4
Locus typicus: Florida-Hatteras Slope, Florida
Stratum typicum: Post-Miocene
Original description: Drugg, 1970, p. 115
Tract discoidal, with two wall layers. The endophragm is about 1 µm thick and forms a central body. The thin membranous periphragm is supported by processes arising from the central body. The periphragm is commonly damaged or missing due to its fragile nature. The spherical processes are closed distally and the cup-shaped processes are open distally. The processes are concentrated along the peripheral region and number from about 6 to 14. The dorsal and ventral areas of the central body (including the operculum) are ornamented by closely spaced small spherical "processes" which vary from 1 µm to 6 µm in diameter. The archeopyle reflects the position of three plates (see figure 1) which, judging by their size, shape, and location, are precingular. Using Evitt"s ( 1967 ) study of thc archeopyle as a guide, these plates most prohahly represent precingular plates 2", 3", and 4"".
Dimensions: Body 87 µm to 117 µm. Central plate of the operculum is 35 µm to 74 µm high and 22 µm to 32 µm wide at the base.
Affinities:
Drugg, 1970, p. 116: Tuberculodinium wallii differs from T. vancampoae in exhibiting small spherical "processes" on the dorsal and ventral surfaces. The archeopyle of the former is also somewhat larger and slightly differs in shape from T. vancampoae.
Holotype: Drugg, 1970, fig.4
Locus typicus: Florida-Hatteras Slope, Florida
Stratum typicum: Post-Miocene
Original description: Drugg, 1970, p. 115
Tract discoidal, with two wall layers. The endophragm is about 1 µm thick and forms a central body. The thin membranous periphragm is supported by processes arising from the central body. The periphragm is commonly damaged or missing due to its fragile nature. The spherical processes are closed distally and the cup-shaped processes are open distally. The processes are concentrated along the peripheral region and number from about 6 to 14. The dorsal and ventral areas of the central body (including the operculum) are ornamented by closely spaced small spherical "processes" which vary from 1 µm to 6 µm in diameter. The archeopyle reflects the position of three plates (see figure 1) which, judging by their size, shape, and location, are precingular. Using Evitt"s ( 1967 ) study of thc archeopyle as a guide, these plates most prohahly represent precingular plates 2", 3", and 4"".
Dimensions: Body 87 µm to 117 µm. Central plate of the operculum is 35 µm to 74 µm high and 22 µm to 32 µm wide at the base.
Affinities:
Drugg, 1970, p. 116: Tuberculodinium wallii differs from T. vancampoae in exhibiting small spherical "processes" on the dorsal and ventral surfaces. The archeopyle of the former is also somewhat larger and slightly differs in shape from T. vancampoae.