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Batioladinium reticulatum
Batioladinium reticulatum, Stover and Helby, 1987
Originally (and now) Batioladinium, subsequently Necrobroomea.
Below, 1990, transferred this species to Necrobroomea Wiggins, 1975. Lentin and Williams, 1993, retained the species in Batioladinium.
Holotype: Stover and Helby, 1987, Fig.1E-G
Locus typicus: Carnarvon Basin, Australia
Stratum typicum: Berriasian
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Original description: [Stover and Helby, 1987, p. 101]:
Description:
Cysts proximate, ellipsoidal, with a short, generally pointed apical horn and 2 short, rounded antapical horns of essentially equal length. Cyst wall 2-layered, consisting of a thin (0.5-1 µm), smooth to finely granulate autophragm and a thin ectophragm (0.5 µm) supported by irregularly distributed, curved rows of small capitate processes (up to 2.5 µm in length and usually less than 1 µm in diameter). Surface expression of the ectophragm irregularly reticulate due to draping of the ectophragm over the processes (maximum lumen size about 5 µm). Reticulation most strongly developed on the hypocyst and commonly reduced anteriorly to an irregular granulation. Paratabulation indicated by archeopyle and paracingulum.
Archeopyle apical, with the principal suture sloping posteriorly from dorsal to ventral surface (Fig.1J-N). Opercula usually free.
Paracingulum defined by transverse ridges along its anterior and posterior margins. Paracingulum horizontal on dorsal surface, with its ends offset by about one cingular width on ventral surface. In right lateral view paracingulum sloping posteriorly from the dorsal to the ventral surface, but not as steeply as the principal archeopyle suture. Parasulcus undefined, but its anterior position indicated by the parasulcal notch and the offset ends of the paracingulum.
Affinities:
Batioladinium reticulatum closely resembles B. micropodum (Eisenack and Cookson) Brideaux 1 975, but is distinguished from other species of the genus in having an irregularly reticulate ectophragm and cingular ridges.
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Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Batioladinium reticulatum Stover and Helby, 1987a. This species is distinguished by its irregular reticulum and cingular ridges.
Size: overall length 63-88 µm, length of dorsal surface (operculum missing) 48-75 µm. Width at paracingulum 23-48 µm.
Originally (and now) Batioladinium, subsequently Necrobroomea.
Below, 1990, transferred this species to Necrobroomea Wiggins, 1975. Lentin and Williams, 1993, retained the species in Batioladinium.
Holotype: Stover and Helby, 1987, Fig.1E-G
Locus typicus: Carnarvon Basin, Australia
Stratum typicum: Berriasian
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Stover and Helby, 1987, p. 101]:
Description:
Cysts proximate, ellipsoidal, with a short, generally pointed apical horn and 2 short, rounded antapical horns of essentially equal length. Cyst wall 2-layered, consisting of a thin (0.5-1 µm), smooth to finely granulate autophragm and a thin ectophragm (0.5 µm) supported by irregularly distributed, curved rows of small capitate processes (up to 2.5 µm in length and usually less than 1 µm in diameter). Surface expression of the ectophragm irregularly reticulate due to draping of the ectophragm over the processes (maximum lumen size about 5 µm). Reticulation most strongly developed on the hypocyst and commonly reduced anteriorly to an irregular granulation. Paratabulation indicated by archeopyle and paracingulum.
Archeopyle apical, with the principal suture sloping posteriorly from dorsal to ventral surface (Fig.1J-N). Opercula usually free.
Paracingulum defined by transverse ridges along its anterior and posterior margins. Paracingulum horizontal on dorsal surface, with its ends offset by about one cingular width on ventral surface. In right lateral view paracingulum sloping posteriorly from the dorsal to the ventral surface, but not as steeply as the principal archeopyle suture. Parasulcus undefined, but its anterior position indicated by the parasulcal notch and the offset ends of the paracingulum.
Affinities:
Batioladinium reticulatum closely resembles B. micropodum (Eisenack and Cookson) Brideaux 1 975, but is distinguished from other species of the genus in having an irregularly reticulate ectophragm and cingular ridges.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Batioladinium reticulatum Stover and Helby, 1987a. This species is distinguished by its irregular reticulum and cingular ridges.
Size: overall length 63-88 µm, length of dorsal surface (operculum missing) 48-75 µm. Width at paracingulum 23-48 µm.