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Cleistosphaeridium radiculopse
Cleistosphaeridium radiculopsis, Mao Shaozhi and Norris, 1988
Holotype: Mao Shaozhi and Norris, 1988, pl.7, fig.21
Locus typicus: Wuyitake Formation, Wuluokeqiate section, China
Stratum typicum: Late Cretaceous
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Original description: [Mao Shaozhi and Norris, 1988, p. 37]:
Diagnosis:
Cysts skolochorate. Body spherical to oval, bearing numerous slender, sinuous nontabular processes; processes typically branched distally. No indications of tabulation other than at apical archeopyle, type (tA); operculum typically free.
Description:
Processes relatively long ( 8 to 13 µm), narrow (less than 0.5 µm across in the middle of the processes), sinuous, expanded proximally a short distance from base, slightly tapering, hairlike distally. Length of processes varies, longest being twice as long as the shortest. Processes sometimes unbranched but typically branched into two to three smaller ones at middle or one third distal part of processes, resembling fibrous roots. Autophragm thin, not absorbing stain readily.
Apical archeopyle suture angular, delimiting precingular plates.
Dimensions:
Width 29 to 48 µm (holotype 33 µm).
Affinities:
Cleistosphaeridium radiculopsis is distinguished from some similar species of Cleistosphaeridium by its unique processes. C. (?) aciculare (Davey, 1969) also has numerous acuminate and slightly flexuous processes, but these, however, are simple rather than branched, as are those of C. ehrenbergi (Deflandre, 1947), C. polyacanthum (Gitmez, 1970), and C. polytrichum (Valensi, 1947).
Holotype: Mao Shaozhi and Norris, 1988, pl.7, fig.21
Locus typicus: Wuyitake Formation, Wuluokeqiate section, China
Stratum typicum: Late Cretaceous
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Original description: [Mao Shaozhi and Norris, 1988, p. 37]:
Diagnosis:
Cysts skolochorate. Body spherical to oval, bearing numerous slender, sinuous nontabular processes; processes typically branched distally. No indications of tabulation other than at apical archeopyle, type (tA); operculum typically free.
Description:
Processes relatively long ( 8 to 13 µm), narrow (less than 0.5 µm across in the middle of the processes), sinuous, expanded proximally a short distance from base, slightly tapering, hairlike distally. Length of processes varies, longest being twice as long as the shortest. Processes sometimes unbranched but typically branched into two to three smaller ones at middle or one third distal part of processes, resembling fibrous roots. Autophragm thin, not absorbing stain readily.
Apical archeopyle suture angular, delimiting precingular plates.
Dimensions:
Width 29 to 48 µm (holotype 33 µm).
Affinities:
Cleistosphaeridium radiculopsis is distinguished from some similar species of Cleistosphaeridium by its unique processes. C. (?) aciculare (Davey, 1969) also has numerous acuminate and slightly flexuous processes, but these, however, are simple rather than branched, as are those of C. ehrenbergi (Deflandre, 1947), C. polyacanthum (Gitmez, 1970), and C. polytrichum (Valensi, 1947).