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Glaphyrocysta microfenestrata
Glaphyrocysta microfenestrata (Bujak, 1976) Stover and Evitt, 1978
Originally Cyclonephelium, subseauently (and now) Glaphyrocysta.
Holotype: Bujak, 1976, pl.4, figs.4–5; Bujak et al., 1980, pl.14, fig.1; Fauconnier and Masure, 2004, pl.33, figs.2–3.
Locus typicus: Whitecliff Bay, Isle of Wight, England
Stratum typicum: Late Eocene
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Glaphyrocysta microfenestrata (Bujak, 1976) Stover and Evitt, 1978, has fibrous, solid processes arranged in arcuate or linear complexes. More than 8 processes in each complex on pre-, postcingular and antapical plates. Distal process platforms formed of tightly interwoven trabeculate networks. Glaphyrocysta microfenestrata differs from Glaphyrocysta texta in being larger, and in having more processes and more tightly interwoven trabeculae in distal process platforms. The two species are similar in possessing solid, finely fibrous processes arranged in complexes which reflect a tabulation of 4', 5", xc, 5"’, 1p, 1"”, although the posterior intercalary process has not been identified with certainty in G.microfenestrata. Size: central body length, with operculum 64-70 µm, central body without operculum 45-67 µm, central body width 54-72 µm, process length 15-35 µm.
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Original diagnosis: Bujak, 1976, p.112: Cyclonephelium microfenestratum
Central body dorsoventrally compressed, outline subcircular or subquadrate, with or without one or two antapical lobes. Autophragm granulate or reticulate on middorsal and midventral areas, elsewhere scabrate to granulate. Processes fibrous, solid, arranged in arcuate or linear complexes on cingular zone, elsewhere in annulate or soleate complexes. Additional processes often present inside soleate and annulate complexes. More than eight processes usually comprising each apical, precingular, postcingular and antapical process complex. Processes of each complex typically interconnected along their lengths, bearing distal process platforms formed of tightly interwoven trabeculate networks. Platforms of adjacent process complexes often joined by trabeculae. Reflected process complex tabulation 4', 5", xc, 5''', ?p, 1''''; plate areas 6", 6''', anterior sulcal area, and middorsal and midventral areas without process complexes. Plate area 3" sometimes with single process rather than process complex. Archeopyle apical, tetratabular. Operculum simple and usually detached. Short, accessory archeopyle sutures often partially defme six precingular plate areas, and an anterior sulcal Plate area offset to the left on the ventral surface.
Originally Cyclonephelium, subseauently (and now) Glaphyrocysta.
Holotype: Bujak, 1976, pl.4, figs.4–5; Bujak et al., 1980, pl.14, fig.1; Fauconnier and Masure, 2004, pl.33, figs.2–3.
Locus typicus: Whitecliff Bay, Isle of Wight, England
Stratum typicum: Late Eocene
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Glaphyrocysta microfenestrata (Bujak, 1976) Stover and Evitt, 1978, has fibrous, solid processes arranged in arcuate or linear complexes. More than 8 processes in each complex on pre-, postcingular and antapical plates. Distal process platforms formed of tightly interwoven trabeculate networks. Glaphyrocysta microfenestrata differs from Glaphyrocysta texta in being larger, and in having more processes and more tightly interwoven trabeculae in distal process platforms. The two species are similar in possessing solid, finely fibrous processes arranged in complexes which reflect a tabulation of 4', 5", xc, 5"’, 1p, 1"”, although the posterior intercalary process has not been identified with certainty in G.microfenestrata. Size: central body length, with operculum 64-70 µm, central body without operculum 45-67 µm, central body width 54-72 µm, process length 15-35 µm.
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Original diagnosis: Bujak, 1976, p.112: Cyclonephelium microfenestratum
Central body dorsoventrally compressed, outline subcircular or subquadrate, with or without one or two antapical lobes. Autophragm granulate or reticulate on middorsal and midventral areas, elsewhere scabrate to granulate. Processes fibrous, solid, arranged in arcuate or linear complexes on cingular zone, elsewhere in annulate or soleate complexes. Additional processes often present inside soleate and annulate complexes. More than eight processes usually comprising each apical, precingular, postcingular and antapical process complex. Processes of each complex typically interconnected along their lengths, bearing distal process platforms formed of tightly interwoven trabeculate networks. Platforms of adjacent process complexes often joined by trabeculae. Reflected process complex tabulation 4', 5", xc, 5''', ?p, 1''''; plate areas 6", 6''', anterior sulcal area, and middorsal and midventral areas without process complexes. Plate area 3" sometimes with single process rather than process complex. Archeopyle apical, tetratabular. Operculum simple and usually detached. Short, accessory archeopyle sutures often partially defme six precingular plate areas, and an anterior sulcal Plate area offset to the left on the ventral surface.