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Diconodinium martianum
From Fensome et al., 2019:
Diconodinium martianum Srivastava, 1995, p.286, pl.14, figs.1–10. Holotype: Srivastava, 1995, pl.14, figs.1–2. Age: Campanian.
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Original description Srivastava, 1995:
Descnpliol1-J3ody shape fusiform to rhomboidal with single apical ~Ind antapical horns of almost equal size and shape; autophragm thin. surface smooth, nontabular except that paracingulum indicated; paracingulum slightly raised, smooth ridges about 6-8 /-lm apan, paracingulum groove smooth, parasulcus also smooth; archeopyle generally not indicated, intercalary when present.
Size measurements--Total length x breadth range 84-110 x 26-44 /-lm in nine specimens of this study.
Hololype- PI. 14, figs 1, 2; photomicrograph reference no. 85032124, 25: objective x 40; microscope location-horizontal 400/vertical 103.0: size-total length x breadth 94 x 52 /-lm; sample no. eRC 32142-3/Slide I; locality OW 14, the Taylor Group, the Pecan Gap ChaJk, McLennan County. Texas; Late Maastrichtian.
Paratype-PI. 14, fig. 3: SEM photomicrograph reference no. P91l0/N25255; x 800: sample no. CRC ,32142-4; locality DWI4. the Taylor Group, the Pecan Gap Chalk. McLennan County, Texas; Late Maastrichtian.
Remarks:.Diconodinium martianum is distinct from D. psilatum, D glabrum. and D rhombiforme in having longer apical and antapical horns.
Name derivation -After Mart, Texas.
Diconodinium martianum Srivastava, 1995, p.286, pl.14, figs.1–10. Holotype: Srivastava, 1995, pl.14, figs.1–2. Age: Campanian.
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Original description Srivastava, 1995:
Descnpliol1-J3ody shape fusiform to rhomboidal with single apical ~Ind antapical horns of almost equal size and shape; autophragm thin. surface smooth, nontabular except that paracingulum indicated; paracingulum slightly raised, smooth ridges about 6-8 /-lm apan, paracingulum groove smooth, parasulcus also smooth; archeopyle generally not indicated, intercalary when present.
Size measurements--Total length x breadth range 84-110 x 26-44 /-lm in nine specimens of this study.
Hololype- PI. 14, figs 1, 2; photomicrograph reference no. 85032124, 25: objective x 40; microscope location-horizontal 400/vertical 103.0: size-total length x breadth 94 x 52 /-lm; sample no. eRC 32142-3/Slide I; locality OW 14, the Taylor Group, the Pecan Gap ChaJk, McLennan County. Texas; Late Maastrichtian.
Paratype-PI. 14, fig. 3: SEM photomicrograph reference no. P91l0/N25255; x 800: sample no. CRC ,32142-4; locality DWI4. the Taylor Group, the Pecan Gap Chalk. McLennan County, Texas; Late Maastrichtian.
Remarks:.Diconodinium martianum is distinct from D. psilatum, D glabrum. and D rhombiforme in having longer apical and antapical horns.
Name derivation -After Mart, Texas.