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Systematophora granulosa
Systematophora granulosa (Jain, 1977b, p.182–183, pl.2, fig.17) Fauconnier in Fauconnier and Masure, 2004, p.525.
Originally Surculosphaeridium, subsequently (and now) Systematophora.
Holotype: Jain, 1977b, pl.2, fig.17; Fauconnier and Masure, 2004, pl.76, figs.8–10.
Age: early Albian.
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Original description: [Jain, 1977b]:
Surculosphaeridium granulosum sp. nov.
PI. 2, fig. 17
Holotype - PI. 2, fig. 17; Slide no. 5048-5.
Locality - Kallakkudi Limestone Quarry II, Dalmiapuram, South India.
Horizon - Grey Shale Member, Dalmiapuram Formation; Early Albian.
Diagnosis - Cyst spherical, double-walled, endophragm smooth, periphragm granulose giving rise to solid, deeply branched, distally closed processes; reflected tabulation 4', 6", 6c, 6", 1p, 3"", 4-5S. Cingular processes deeply furcate or completely divided into two. Archaeopyle apical, formed by complete detachment of apical part having four processes, margin angular. Some processes possess perforations along the proximal end.
Measurements Holotype Range
Diameter of central body 51 μm 40-60 μm
Length of processes 26 μm upto 30 μm
Comparison -- S. granulosum sp. nov. is characterized by the presence of deeply branched, proximally perforate processes, granulose periphragm and 4-5 sulcal processes. It resembles S. cribrotubiferum (Sarjeant) Davey et al. (1966), S. vestitum (Deflandre) Davey et al. (1966) and S. longifurcatum (Firtion) Davey et al. (1966) in having deeply branched processes but differs mainly in having distinctly granulose periphragm with 4-5 sulcal processes.
Remarks - Some post cingular processes in the present material show proximal connection with each other. This suggests comparison with the genus Systematophora Klement (1960) but is separated due to lack of regular occurrence of circular to polygonal fields.
Originally Surculosphaeridium, subsequently (and now) Systematophora.
Holotype: Jain, 1977b, pl.2, fig.17; Fauconnier and Masure, 2004, pl.76, figs.8–10.
Age: early Albian.
----------------------------------------------------------------------------------------------------------------------------------------
Original description: [Jain, 1977b]:
Surculosphaeridium granulosum sp. nov.
PI. 2, fig. 17
Holotype - PI. 2, fig. 17; Slide no. 5048-5.
Locality - Kallakkudi Limestone Quarry II, Dalmiapuram, South India.
Horizon - Grey Shale Member, Dalmiapuram Formation; Early Albian.
Diagnosis - Cyst spherical, double-walled, endophragm smooth, periphragm granulose giving rise to solid, deeply branched, distally closed processes; reflected tabulation 4', 6", 6c, 6", 1p, 3"", 4-5S. Cingular processes deeply furcate or completely divided into two. Archaeopyle apical, formed by complete detachment of apical part having four processes, margin angular. Some processes possess perforations along the proximal end.
Measurements Holotype Range
Diameter of central body 51 μm 40-60 μm
Length of processes 26 μm upto 30 μm
Comparison -- S. granulosum sp. nov. is characterized by the presence of deeply branched, proximally perforate processes, granulose periphragm and 4-5 sulcal processes. It resembles S. cribrotubiferum (Sarjeant) Davey et al. (1966), S. vestitum (Deflandre) Davey et al. (1966) and S. longifurcatum (Firtion) Davey et al. (1966) in having deeply branched processes but differs mainly in having distinctly granulose periphragm with 4-5 sulcal processes.
Remarks - Some post cingular processes in the present material show proximal connection with each other. This suggests comparison with the genus Systematophora Klement (1960) but is separated due to lack of regular occurrence of circular to polygonal fields.