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Hystrichosphaeridium deanei
Hystrichosphaeridium deanei Davey and Williams 1966
Now Florentinia. Originally Hystrichosphaeridium, subsequently (and now) Florentinia.
Holotype: Davey and Williams, 1966, pl.6, fig.8
Locus typicus: Fetcham Mill, Surrey, England
Stratum typicum: Cenomanian
Original diagnosis: Davey and Williams, 1966, p. 58
Subspherical to ovoidal central body composed of thin smooth endophragm and smooth or slightly granular periphragm, the latter forming the processes. Tubular processes varying considerably in shape, sub-conical, lagenate or tubiform, open distally with entire or serrate margins. Width of processes extremely variable. Apical archaeopyle usually present.
Dimensions: holotype: diameter of central body 46 by 47 Ám; width of antapical process 31 Ám, length 35 Ám; length of other processes 15-30 Ám. Number of processes 21. Range: diameter of central body 41-54 Ám, length of processes 15-45 Ám.
Original description: Davey and Williams, 1966, p. 59
The endophragm of the processes may be fibrous, but not strongly so. The processes vary greatly in size and shape, this variation being continuous between extremes of the range. The width of the processes on a specimen may vary from 1.5 to 35 Ám; the length of the processes is, however, more constant. The largest process is usually the antapical, it being sub-conical to lagenate in shape. In one specimen only a few of the larger processes are seen to give rise to two or three parallel branches distally. The processes reflect a tabulation of 4", 6", 6c, 5""", 1p, 1"""" and 2-4s.
Now Florentinia. Originally Hystrichosphaeridium, subsequently (and now) Florentinia.
Holotype: Davey and Williams, 1966, pl.6, fig.8
Locus typicus: Fetcham Mill, Surrey, England
Stratum typicum: Cenomanian
Original diagnosis: Davey and Williams, 1966, p. 58
Subspherical to ovoidal central body composed of thin smooth endophragm and smooth or slightly granular periphragm, the latter forming the processes. Tubular processes varying considerably in shape, sub-conical, lagenate or tubiform, open distally with entire or serrate margins. Width of processes extremely variable. Apical archaeopyle usually present.
Dimensions: holotype: diameter of central body 46 by 47 Ám; width of antapical process 31 Ám, length 35 Ám; length of other processes 15-30 Ám. Number of processes 21. Range: diameter of central body 41-54 Ám, length of processes 15-45 Ám.
Original description: Davey and Williams, 1966, p. 59
The endophragm of the processes may be fibrous, but not strongly so. The processes vary greatly in size and shape, this variation being continuous between extremes of the range. The width of the processes on a specimen may vary from 1.5 to 35 Ám; the length of the processes is, however, more constant. The largest process is usually the antapical, it being sub-conical to lagenate in shape. In one specimen only a few of the larger processes are seen to give rise to two or three parallel branches distally. The processes reflect a tabulation of 4", 6", 6c, 5""", 1p, 1"""" and 2-4s.