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Florentinia striata
From Fensome et al., 2019:
Florentinia striata Duxbury, 2019, p.194, pl.21, figs.9–11. Holotype: Duxbury, 2019, pl.21, figs.10–11. Age: late Barremian.
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Original description Duxbury, 2019:
Plate 21, Figures 9–11
Holotype: Plate 21, Figures 10, 11.
Type Locality: Well 22/26a-2 at 11,235.00 ft (core chip), late Barremian age. Holotype: E.F. V29.0.
Derivation of Name: From the Latin striata, striped – in reference to the main body and processes of this species.
Diagnosis: A fairly thick-walled chorate cyst with a spheroidal to ovoidal endocyst. Hollow, mesotabular, distally open and parallel-sided processes extend from the surface and finely-granular patches may be present below process bases; the distal margins of these processes are crenellated, surmounted by short, flat-ended projections. Postcingular processes are typically much broader than that at the antapex. Slender, capitate or distally branched cingular processes are also present. Striations run along the entire length of the larger processes and over the cyst surface, where they form a complex network of low ridges. Tabulation of the formula 4', 6'', 6c, 6''', 1p.v., 1'''' is indicated by process distribution and by a precingular archeopyle (3''). Process length increases slightly between the epi- and hypocyst, but process breadth varies significantly.
Dimensions: Holotype: Central body - 51 × 48 μm.
Overall: 84 × 84 μm.
All measured specimens: Central body - 68 (53) 41 μm × 71 (51) 38 μm.
Overall: 101 (87) 73 μm × 94 (83) 71 μm.
Specimens Measured: 10.
Remarks: Florentinia striata is similar to Florentinia interrupta Duxbury 1980 in having striate processes but differs in possessing tubular processes with flat-ended projections around the their distal margins; the processes of F. interrupta furcate in a complex manner and divide into several capitate elements. Florentinia striata also resembles Florentinia globosa in showing significant differences in process breadth, in its tendency to random orientation and in possessing broader postcingular processes than at the antapex. It differs in possessing cingular processes and in its characteristic surface striation.
Florentinia striata Duxbury, 2019, p.194, pl.21, figs.9–11. Holotype: Duxbury, 2019, pl.21, figs.10–11. Age: late Barremian.
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Original description Duxbury, 2019:
Plate 21, Figures 9–11
Holotype: Plate 21, Figures 10, 11.
Type Locality: Well 22/26a-2 at 11,235.00 ft (core chip), late Barremian age. Holotype: E.F. V29.0.
Derivation of Name: From the Latin striata, striped – in reference to the main body and processes of this species.
Diagnosis: A fairly thick-walled chorate cyst with a spheroidal to ovoidal endocyst. Hollow, mesotabular, distally open and parallel-sided processes extend from the surface and finely-granular patches may be present below process bases; the distal margins of these processes are crenellated, surmounted by short, flat-ended projections. Postcingular processes are typically much broader than that at the antapex. Slender, capitate or distally branched cingular processes are also present. Striations run along the entire length of the larger processes and over the cyst surface, where they form a complex network of low ridges. Tabulation of the formula 4', 6'', 6c, 6''', 1p.v., 1'''' is indicated by process distribution and by a precingular archeopyle (3''). Process length increases slightly between the epi- and hypocyst, but process breadth varies significantly.
Dimensions: Holotype: Central body - 51 × 48 μm.
Overall: 84 × 84 μm.
All measured specimens: Central body - 68 (53) 41 μm × 71 (51) 38 μm.
Overall: 101 (87) 73 μm × 94 (83) 71 μm.
Specimens Measured: 10.
Remarks: Florentinia striata is similar to Florentinia interrupta Duxbury 1980 in having striate processes but differs in possessing tubular processes with flat-ended projections around the their distal margins; the processes of F. interrupta furcate in a complex manner and divide into several capitate elements. Florentinia striata also resembles Florentinia globosa in showing significant differences in process breadth, in its tendency to random orientation and in possessing broader postcingular processes than at the antapex. It differs in possessing cingular processes and in its characteristic surface striation.