Back
Epelidosphaeridia pentagona
Epelidosphaeridia pentagona Morgan 1980
Holotype: Morgan, 1980, pl.12, figs.14-15
Locus typicus: DSDP site 258, offshore W Australia
Stratum typicum: Albian
Original description: Morgan, 1980, p. 23
Single-walled cysts pentagonal; apical horn a low rounded bulge; two slightly unequal antapical horns moderately strongly developed, rounded distally; lateral bulges distally rounded; epitract subtriangular in dorsal-ventral outline; cyst surface evently, moderately densely covered with solid sharply pointed spines, 4-8 µm long; spines may be weakly peritabular, incompletely defining tabuiation and paracingulum; archeopyle apical, operculum free.
Affinities:
Morgan, 1980, p. 23: E. pentagona differs from E. spinosa (Cookson and Hughes 1964) Davey 1969, by heing more pentagonal in outline, and by having more strongly developed lateral and antapical bulges. E. aspera differs by having shorter spines set upon granules, not simple spines.
Holotype: Morgan, 1980, pl.12, figs.14-15
Locus typicus: DSDP site 258, offshore W Australia
Stratum typicum: Albian
Original description: Morgan, 1980, p. 23
Single-walled cysts pentagonal; apical horn a low rounded bulge; two slightly unequal antapical horns moderately strongly developed, rounded distally; lateral bulges distally rounded; epitract subtriangular in dorsal-ventral outline; cyst surface evently, moderately densely covered with solid sharply pointed spines, 4-8 µm long; spines may be weakly peritabular, incompletely defining tabuiation and paracingulum; archeopyle apical, operculum free.
Affinities:
Morgan, 1980, p. 23: E. pentagona differs from E. spinosa (Cookson and Hughes 1964) Davey 1969, by heing more pentagonal in outline, and by having more strongly developed lateral and antapical bulges. E. aspera differs by having shorter spines set upon granules, not simple spines.