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Bourkidinium psilatum
Bourkidinium psilatum, Singh, 1983
Holotype: Singh. 1983, pl.42, fig.8
Locus typicus: Peace River area, NW Alberta, Canada
Stratum typicum: Early Cenomanian
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Original description: [Singh, 1983, p. 125]:
Description:
Skolochorate cysts; central body smooth, elongate ellipsoidal, and bearing 5 to 7 processes at each end in the apical and antapical areas; processes long, tubular, hollow, and terminating distally with a few, 3- to 5-micron long recurved spines; stems of processes 1 to 2.5 Ám wide; processes open distally; length of the processes from 1/2 to 3/4 of the length of the central body; paracingular zone wide, without processes; archeopyle apical, type tA.
Dimensions:
Overall length including the processes 77(88)105 µm. Holotype 98 µm. Length of the central body 39(47)53 µm. Holotype 44 µm. Breadth of the central body 24(29)38 µm. Holotype 31 µm. Length of the processes 24(28)36 µm. Holotype 25 to 30 µm. Specimens measured 12.
Affinities:
Bourkidinium psilatum differs from Bourkidinium granulatum Morgan, 1975, in having a smooth central body and equal number of processes (5 to 7) in the apical and antapical regions.
Holotype: Singh. 1983, pl.42, fig.8
Locus typicus: Peace River area, NW Alberta, Canada
Stratum typicum: Early Cenomanian
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Singh, 1983, p. 125]:
Description:
Skolochorate cysts; central body smooth, elongate ellipsoidal, and bearing 5 to 7 processes at each end in the apical and antapical areas; processes long, tubular, hollow, and terminating distally with a few, 3- to 5-micron long recurved spines; stems of processes 1 to 2.5 Ám wide; processes open distally; length of the processes from 1/2 to 3/4 of the length of the central body; paracingular zone wide, without processes; archeopyle apical, type tA.
Dimensions:
Overall length including the processes 77(88)105 µm. Holotype 98 µm. Length of the central body 39(47)53 µm. Holotype 44 µm. Breadth of the central body 24(29)38 µm. Holotype 31 µm. Length of the processes 24(28)36 µm. Holotype 25 to 30 µm. Specimens measured 12.
Affinities:
Bourkidinium psilatum differs from Bourkidinium granulatum Morgan, 1975, in having a smooth central body and equal number of processes (5 to 7) in the apical and antapical regions.