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Araneosphaera consociata
Araneosphaera consociata, Jain and Tandon, 1981
Holotype: Jain and Tandon, 1981, pl.3, fig.47
Age: Middle Eocene
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Original description: [Jain and Tandon, 1981]:
Diagnosis:
Cyst body spherical, surface fibroreticulate; paracingulum raised, equally divides cyst body. Periphragm gives rise to fibrous apical, precingular, postcingular and antapical processes only.
Cingular processes absent. Apical and precingular processes usually short, distally united by fenestrate membrane. Postcingular and antapical processes usually longer than apical and precingular ones, distally united by fibrous, fenestrate membrane.
Paratabulation that of genus; archaeopyle broader than long, precingular (3’’).
Dimensions:
Measurements: Cyst size holotype - 150x100 μm (range 100-180x90-120 μm).
Diameter of cyst body holotype - 86 μm (range 60-90 μm). Length of processes up to holotype – 50 μm (range 60 μm).
Affinities/Remarks:
The processes on both apical and antapical sides are irregularly branched, fibrous and thin, at times their identification as separate processes becomes difficult. Araneosphaera consociate sp. nov. differs from the genotype A araneosa Eaton (1976) in its distally united apical and precingular processes.
Holotype: Jain and Tandon, 1981, pl.3, fig.47
Age: Middle Eocene
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Original description: [Jain and Tandon, 1981]:
Diagnosis:
Cyst body spherical, surface fibroreticulate; paracingulum raised, equally divides cyst body. Periphragm gives rise to fibrous apical, precingular, postcingular and antapical processes only.
Cingular processes absent. Apical and precingular processes usually short, distally united by fenestrate membrane. Postcingular and antapical processes usually longer than apical and precingular ones, distally united by fibrous, fenestrate membrane.
Paratabulation that of genus; archaeopyle broader than long, precingular (3’’).
Dimensions:
Measurements: Cyst size holotype - 150x100 μm (range 100-180x90-120 μm).
Diameter of cyst body holotype - 86 μm (range 60-90 μm). Length of processes up to holotype – 50 μm (range 60 μm).
Affinities/Remarks:
The processes on both apical and antapical sides are irregularly branched, fibrous and thin, at times their identification as separate processes becomes difficult. Araneosphaera consociate sp. nov. differs from the genotype A araneosa Eaton (1976) in its distally united apical and precingular processes.