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Ellipsoidictyum cinctum
Ellipsoidictyum cinctum Klement, 1960
Tax. sr. synonym of Dictyopyxidia areolata (Cookson and Eisenack, 1960) Eisenack and Kjellstrom, 1971, according to Sarjeant, 1976, and Kunz, 1990.
Holotype: Klement, 1960, pl.6, fig.15-16, text-fig.36-37
Paratypes: Klement, 1960
Locus typicus: Scherstetten 1 Well, SW Germany
Stratum typicum: Middle Oxfordian
Translation Klement, 1960: LPP
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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.
Ellipsoidictyum cinctum Klement, 1960, has an irregular polygonal network, which is made up of dissimilar individual meshes. The network is formed of low undulating bent lamellae, which are perpendicular to the surface. The cingulum consists of six elongated rectangular meshes and the sulcus is also delineated. Klement (1960) believed that there were relatively short, similar hollow processes which open distally. I disagree. Size: length/width ratio with marginal suture, 63-77 x 49-55 µm, without marginal suture, 55-65 x 37-43 µm, processes 3-7 µm.
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Original description: Klement 1960, p.78-79
Typical Ellipsoidictyum species with the characteristics of that genus and additional features: girdle region consisting of 6 consecutive, elongate-orthogonal meshes, with a spiral course, the ends displaced about a girdle- width. Indication of a longitudinal furrow from the presence of unilaterally open mesh-structures between the displaced ends of the girdle band. Short, hollow marginal processes, distally slightly lobate, connected by an equally broad membranous, coherent band, that runs from pole to pole.
Tax. sr. synonym of Dictyopyxidia areolata (Cookson and Eisenack, 1960) Eisenack and Kjellstrom, 1971, according to Sarjeant, 1976, and Kunz, 1990.
Holotype: Klement, 1960, pl.6, fig.15-16, text-fig.36-37
Paratypes: Klement, 1960
Locus typicus: Scherstetten 1 Well, SW Germany
Stratum typicum: Middle Oxfordian
Translation Klement, 1960: LPP
--------------------------------------------------
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Ellipsoidictyum cinctum Klement, 1960, has an irregular polygonal network, which is made up of dissimilar individual meshes. The network is formed of low undulating bent lamellae, which are perpendicular to the surface. The cingulum consists of six elongated rectangular meshes and the sulcus is also delineated. Klement (1960) believed that there were relatively short, similar hollow processes which open distally. I disagree. Size: length/width ratio with marginal suture, 63-77 x 49-55 µm, without marginal suture, 55-65 x 37-43 µm, processes 3-7 µm.
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Original description: Klement 1960, p.78-79
Typical Ellipsoidictyum species with the characteristics of that genus and additional features: girdle region consisting of 6 consecutive, elongate-orthogonal meshes, with a spiral course, the ends displaced about a girdle- width. Indication of a longitudinal furrow from the presence of unilaterally open mesh-structures between the displaced ends of the girdle band. Short, hollow marginal processes, distally slightly lobate, connected by an equally broad membranous, coherent band, that runs from pole to pole.