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Cymososphaeridium validum
Cymososphaeridium validum Davey, 1982
Holotype: Davey, 1982, pl.3, fig.5,8,11
Locus typicus: Haldager Borehole, Denmark
Stratum typicum: Hauterivian
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Cymosophaeridium validum Davey, 1982b. The processes are smooth, solid, except sometimes for internal vacuoles. The processes branch initially medially to distally, although in the postcingular processes it is proximal. Size: length of central body without processes, 48-56 µm, width 44-66 µm, process length 20-36 µm.
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Original diagnosis: Davey, 1982, p. 18
Shape: The body is spherical to subspherical.
Wall: The two wall layers are closely appressed except where the periphragm forms the processes. The surface is more or less smooth.
Processes: The plate-centred process vary somewhat in size with 1''' being particularly narrow and flimsy. They are smooth and solid, except sometimes for internal vacuoles. The processes are parallel sided before branching to initially give two to four branches which then branch further. The initial branching is typically medial to distal although in the postcingular processes it is proximal. The process formula is 4', 6", 6''', 1p, 1'''', lps.
Archaeopyle: An apical archaeopyle (Type A) is typically developed.
Original description: Davey, 1982, p. 19
The wall is thin, less than 1 Ám in thickness, and the cyst is often distorted. The narrow process 1''' is approximately 1 Ám thick and the other processes are between 2 and 6 Ám in thickness. The internal vacuoles are not abundant and are often noticeably concentrated at the bases of the processes.
Affinities:
Davey, 1982, p. 19: The presence of solid branching processes and the lack of paracingular processes distinguishes C. validum from all previously described species. It may be identical to specimens wrongly attributed to Hystrichosphaeridium ramuliferum by Gocht 1959 (pl. 3, fig. 9) from the Valanginian and Hauterivian of Germany.
Holotype: Davey, 1982, pl.3, fig.5,8,11
Locus typicus: Haldager Borehole, Denmark
Stratum typicum: Hauterivian
--------------------------------------------------
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Cymosophaeridium validum Davey, 1982b. The processes are smooth, solid, except sometimes for internal vacuoles. The processes branch initially medially to distally, although in the postcingular processes it is proximal. Size: length of central body without processes, 48-56 µm, width 44-66 µm, process length 20-36 µm.
--------------------------------------------------
Original diagnosis: Davey, 1982, p. 18
Shape: The body is spherical to subspherical.
Wall: The two wall layers are closely appressed except where the periphragm forms the processes. The surface is more or less smooth.
Processes: The plate-centred process vary somewhat in size with 1''' being particularly narrow and flimsy. They are smooth and solid, except sometimes for internal vacuoles. The processes are parallel sided before branching to initially give two to four branches which then branch further. The initial branching is typically medial to distal although in the postcingular processes it is proximal. The process formula is 4', 6", 6''', 1p, 1'''', lps.
Archaeopyle: An apical archaeopyle (Type A) is typically developed.
Original description: Davey, 1982, p. 19
The wall is thin, less than 1 Ám in thickness, and the cyst is often distorted. The narrow process 1''' is approximately 1 Ám thick and the other processes are between 2 and 6 Ám in thickness. The internal vacuoles are not abundant and are often noticeably concentrated at the bases of the processes.
Affinities:
Davey, 1982, p. 19: The presence of solid branching processes and the lack of paracingular processes distinguishes C. validum from all previously described species. It may be identical to specimens wrongly attributed to Hystrichosphaeridium ramuliferum by Gocht 1959 (pl. 3, fig. 9) from the Valanginian and Hauterivian of Germany.