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Glaphyrocysta dentata
Glalphyrocysta dentata Matsuoka, 1984a, p.378-379, pl.71, figs.1a-c.
Holotype: Matsuoka, 1984a, pl.71, figs.1a-c; Fauconnier and Masure, 2004, pl.32, fig.1.
Age: Mid Eocene.
Original description (Matsuoka, 1984)
Derivation of name: Latin, dentatus, provided with teeth; with reference to the denticulate margin of trabeculae in distal part of processes.
Diagnosis: Intermediate skolochorate cyst subcircular to elliptical outline in dorso-ventral view. Relatively thin autophragm reticulate. Processes tubiform to buccinate, stout and distally furcate, and occuring as annulate, soliate and linear complexes. Each complex consisting of three to five processes, and distally united by trabeculae with deeply dentate margin. Most complex solitary distally. Apical archeopyle tetratabular. Operculum free.
Holotype: Slide NG 39-5 (2fIII), Pl. 71, Fig. 1, sample no. NG 39, Nanggulan Formation, Middle Eocene. Location; Kalisongo near Nanggulan, 20 km northwest of Yogjakarta, Central Java, Indonesia.
Dimensions: Holotype; cyst diameter 64 µm, length of processes 25 µm. Other specimens; cyst diameter 41-68 µm, length of processes 17-26 µm. Number of specimens measured: 8.
Description: The dorso-ventrally lenticular cyst is lacking in any apical projection. Processes are relatively broad and tubiform to buccinate, and occur as annular, soliate and linear complexes consisting of three to five processes. Distal extremities are furcate and united by flexous lod-like trabeculae with deep dentate margin at out side. Most process complexes are distally united with trabeculae in each other. The precingular area bears five complexes. The 3" paraplate is represented by a linear complex made up of three processes. The 6" paraplate is devoided of any process. The postcingular area consists of five complexes. The 1'" paraplate is a smaller annulate complex of two processes. The linear complex developed n the dorsal side reflects the 3" paraplate. The 2", 4" and 5" paraplates are reflected by large annular complexes. The broad space between 1"' and 5" paraplates ,ight indicate the 6"' paraplate and sulcal area. The cingular and sulcal areas are lacking in any process-like ornamentation, but the anterior sulcal paraplatelet is indicated by two accessory parasutures. The apical archeopyle possesses seven main archeopyle parasutures and several accessory archeopyle parasutures. The infered paratabulatoiun is indicated by the distribution of process complexes and the apical archeopyle; 4', 6", xc+xs, 6"', xp, 1"". Remarks: The present new species is similar to Glaphyrocysta circularis, but differs from the latter in having process complexes consisting of fewer (three to five) and tubiform to buccinate processes, and deeply dentate margin of trabeculae at outside.
Holotype: Matsuoka, 1984a, pl.71, figs.1a-c; Fauconnier and Masure, 2004, pl.32, fig.1.
Age: Mid Eocene.
Original description (Matsuoka, 1984)
Derivation of name: Latin, dentatus, provided with teeth; with reference to the denticulate margin of trabeculae in distal part of processes.
Diagnosis: Intermediate skolochorate cyst subcircular to elliptical outline in dorso-ventral view. Relatively thin autophragm reticulate. Processes tubiform to buccinate, stout and distally furcate, and occuring as annulate, soliate and linear complexes. Each complex consisting of three to five processes, and distally united by trabeculae with deeply dentate margin. Most complex solitary distally. Apical archeopyle tetratabular. Operculum free.
Holotype: Slide NG 39-5 (2fIII), Pl. 71, Fig. 1, sample no. NG 39, Nanggulan Formation, Middle Eocene. Location; Kalisongo near Nanggulan, 20 km northwest of Yogjakarta, Central Java, Indonesia.
Dimensions: Holotype; cyst diameter 64 µm, length of processes 25 µm. Other specimens; cyst diameter 41-68 µm, length of processes 17-26 µm. Number of specimens measured: 8.
Description: The dorso-ventrally lenticular cyst is lacking in any apical projection. Processes are relatively broad and tubiform to buccinate, and occur as annular, soliate and linear complexes consisting of three to five processes. Distal extremities are furcate and united by flexous lod-like trabeculae with deep dentate margin at out side. Most process complexes are distally united with trabeculae in each other. The precingular area bears five complexes. The 3" paraplate is represented by a linear complex made up of three processes. The 6" paraplate is devoided of any process. The postcingular area consists of five complexes. The 1'" paraplate is a smaller annulate complex of two processes. The linear complex developed n the dorsal side reflects the 3" paraplate. The 2", 4" and 5" paraplates are reflected by large annular complexes. The broad space between 1"' and 5" paraplates ,ight indicate the 6"' paraplate and sulcal area. The cingular and sulcal areas are lacking in any process-like ornamentation, but the anterior sulcal paraplatelet is indicated by two accessory parasutures. The apical archeopyle possesses seven main archeopyle parasutures and several accessory archeopyle parasutures. The infered paratabulatoiun is indicated by the distribution of process complexes and the apical archeopyle; 4', 6", xc+xs, 6"', xp, 1"". Remarks: The present new species is similar to Glaphyrocysta circularis, but differs from the latter in having process complexes consisting of fewer (three to five) and tubiform to buccinate processes, and deeply dentate margin of trabeculae at outside.