Back
Surculosphaeridium divarispinosum
Surculosphaeridium divarispinosum Jain, 1977
Holotype: Jain, 1977, pl.6, fig.77
Age: Early Albian
------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Jain, 1977b]:
Surculosphaeridium divarispinosum sp. nov.
PI. 6, fig. 77
Holotype - PI. 6, fig. 77; Slide no. 5053-35.
Locality - Kallakkudi Limestone Quarry II, Dalmiapuram, South India.
Horizon - Grey Shale Member, Dalmiapuram Formation; Early Albian.
Diagnosis - Cyst subspherical, central body surface microgranulose, covered with two types of distally closed processes, one thin, delicate, other stout, well-developed, distally bifurcate, trifurcate, deeply branched, some stout processes proximally disconnected leaving space in between.
Tabulation that of genus. Archaeopyle apical.
Measurements Holotype Range
Cyst diameter 40 μm 35-50 μm
Length of process upto 21 μm upto 30 μm
Comparison - S. divarispinosum sp. nov. differs from S. cribrotubiferum (Sarjeant) Davey et al., S. vestitum (Deflandre) Davey et al. and S. longifurcatum (Firtion) Davey et al. in having two distinct types of processes and microgranulate periphragm. The process endings and branching in all the above mentioned species are variable and so is the case in the present species.
Holotype: Jain, 1977, pl.6, fig.77
Age: Early Albian
------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Jain, 1977b]:
Surculosphaeridium divarispinosum sp. nov.
PI. 6, fig. 77
Holotype - PI. 6, fig. 77; Slide no. 5053-35.
Locality - Kallakkudi Limestone Quarry II, Dalmiapuram, South India.
Horizon - Grey Shale Member, Dalmiapuram Formation; Early Albian.
Diagnosis - Cyst subspherical, central body surface microgranulose, covered with two types of distally closed processes, one thin, delicate, other stout, well-developed, distally bifurcate, trifurcate, deeply branched, some stout processes proximally disconnected leaving space in between.
Tabulation that of genus. Archaeopyle apical.
Measurements Holotype Range
Cyst diameter 40 μm 35-50 μm
Length of process upto 21 μm upto 30 μm
Comparison - S. divarispinosum sp. nov. differs from S. cribrotubiferum (Sarjeant) Davey et al., S. vestitum (Deflandre) Davey et al. and S. longifurcatum (Firtion) Davey et al. in having two distinct types of processes and microgranulate periphragm. The process endings and branching in all the above mentioned species are variable and so is the case in the present species.