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Fibrocysta vectensis ssp. cymosapicis
From Fensome et al., 2019:
Fibrocysta vectensis ssp. cymosapicis Islam, 1983c, p.85–86, pl.3, figs.6–7. Holotype: Islam, 1983c, pl.3, fig.7. Age: Middle Eocene.
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(Islam, 1983):
Lanternosphaeridium sp. 2 Gocht, 1969, p. 50, text-fig. 36. Early Eocene.
Derivation of name : L. cymosus – Full of shoots; apices – Top, apex; refers to its variously branched apical horn.
Diagnosis: Autocyst ellipsoidal, strongly fibroreticulate and between 1 and 2 µm in thickness; possesses many nontabular stout, solid fibrous processes and precingular Type P archeopyle; resembles F. vectensis (Eaton) Stover & Evitt 1978 except in apical horn, - shortest is F. vectensis but very prominent, broad, bearing variable branches along its length and longest of all processes in F. vectensis subsp. Cymosapicis n. ssp.; all processes distally branched and/or wide and aculeate, some processes proximally joined by fibrous crests.
Holotype: Slide C1745(2), V29.3; Middle bagshot member, Middle Eocene, Shapley heath. Paratype. Slide C1745(4), H44.2.
Dimensions: Holotype: cyst body 62x48 µm, length of apical horn 31 µm, antapical horn 27 µm, and other processes 17-29 µm. Paratype: cyst body 54x52 µm, length of apical horn 29 µm, antapical horn 29 µm, and other processes 16-20 µm.
Occurrence: Shapley Heath: C1744-C1745.
Remarks: This subspecies resembles F. axialis (Eisenack) Stover & Evitt 1978 but differs in being more strongly fibrous and possessing stout and frequently broader processes by which it resembles F. vectensis, differing only in the apical prominence.
Fibrocysta vectensis ssp. cymosapicis Islam, 1983c, p.85–86, pl.3, figs.6–7. Holotype: Islam, 1983c, pl.3, fig.7. Age: Middle Eocene.
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(Islam, 1983):
Lanternosphaeridium sp. 2 Gocht, 1969, p. 50, text-fig. 36. Early Eocene.
Derivation of name : L. cymosus – Full of shoots; apices – Top, apex; refers to its variously branched apical horn.
Diagnosis: Autocyst ellipsoidal, strongly fibroreticulate and between 1 and 2 µm in thickness; possesses many nontabular stout, solid fibrous processes and precingular Type P archeopyle; resembles F. vectensis (Eaton) Stover & Evitt 1978 except in apical horn, - shortest is F. vectensis but very prominent, broad, bearing variable branches along its length and longest of all processes in F. vectensis subsp. Cymosapicis n. ssp.; all processes distally branched and/or wide and aculeate, some processes proximally joined by fibrous crests.
Holotype: Slide C1745(2), V29.3; Middle bagshot member, Middle Eocene, Shapley heath. Paratype. Slide C1745(4), H44.2.
Dimensions: Holotype: cyst body 62x48 µm, length of apical horn 31 µm, antapical horn 27 µm, and other processes 17-29 µm. Paratype: cyst body 54x52 µm, length of apical horn 29 µm, antapical horn 29 µm, and other processes 16-20 µm.
Occurrence: Shapley Heath: C1744-C1745.
Remarks: This subspecies resembles F. axialis (Eisenack) Stover & Evitt 1978 but differs in being more strongly fibrous and possessing stout and frequently broader processes by which it resembles F. vectensis, differing only in the apical prominence.