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Tityrosphaeridium funiculatum
Tityrosphaeridium? funiculatum (Morgenroth, 1966) Sarjeant, 1981; Emendation: Brinkhuis, 1992, p.97, as Cordosphaeridium funiculatum.
Now Cordosphaeridium. Originally (and now) Cordosphaeridium, subsequently Tityrosphaeridium?. At the time of the transfer, Sarjeant, 1981 questionably included this species in Tityrosphaeridium. Lentin and Williams, 1985 retained this species in Cordosphaeridium Eisenack, 1963.
Holotype: Morgenroth, 1966, pl.6, fig.2
Paratypes: Morgenroth, 1966
Locus typicus: fehmarn, Katharinenhof, NW Germany
Stratum typicum: Early Eocene
Translation Morgenroth, 1966: LPP
Original description: Morgenroth 1966, p. 23: Cordosphaeridium funiculatum
Diagnosis: On the shell surface a reticulum of solid ridges is present. Processes
in upper third part often split up in 2-4 branches, which, again branched, are running approximately parallel to each other.
Description (annotated): The spherical, sometimes weakly ellipsoidal shell is double layered. The periphragm exists of solid ridges, producing a reticulate pattern on the shell. These give rise to the processes, that accordingly show a fibrous structure. The processes show large variation in shape. Dominating are relatively thick, robust processes (mainly in the upper third part), which split up in 2-4 almost parallel running branches, which again split up or widen distally. Also occurring are all transitions to thin, sharp pointed forms. In the broadest processes little cavities can be present at the base, as concluded by the pyrites-enclosures. Except for the cavities, the processes are solid. The process-lenght varies even within the same specimen. Almost all studied specimens posses a horseshoe- shaped pylome. In addition ellipsoidal and almost circular pylomes do occur.
Dimensions: Diameter capsule: 57 (56/59) µm; specimen diameter 106 (101/117) µm; length processes 28 (25/33) µm; pylome daimater c. 28 (25/30) µm (150 specimens measured).
Affinities:
Morgenroth 1966, p. 23: Cordosphaeridium funiculatum
Characteristic for Cordosphaeridium funiculatum is the reticulate pattern of solid ridges on the surface combined with fibrous structures forming the processes, which furcate branches always runs close to each other, instead of away from each other like in Cordosphaeridium inodes ssp. gracile Eisenack.
Now Cordosphaeridium. Originally (and now) Cordosphaeridium, subsequently Tityrosphaeridium?. At the time of the transfer, Sarjeant, 1981 questionably included this species in Tityrosphaeridium. Lentin and Williams, 1985 retained this species in Cordosphaeridium Eisenack, 1963.
Holotype: Morgenroth, 1966, pl.6, fig.2
Paratypes: Morgenroth, 1966
Locus typicus: fehmarn, Katharinenhof, NW Germany
Stratum typicum: Early Eocene
Translation Morgenroth, 1966: LPP
Original description: Morgenroth 1966, p. 23: Cordosphaeridium funiculatum
Diagnosis: On the shell surface a reticulum of solid ridges is present. Processes
in upper third part often split up in 2-4 branches, which, again branched, are running approximately parallel to each other.
Description (annotated): The spherical, sometimes weakly ellipsoidal shell is double layered. The periphragm exists of solid ridges, producing a reticulate pattern on the shell. These give rise to the processes, that accordingly show a fibrous structure. The processes show large variation in shape. Dominating are relatively thick, robust processes (mainly in the upper third part), which split up in 2-4 almost parallel running branches, which again split up or widen distally. Also occurring are all transitions to thin, sharp pointed forms. In the broadest processes little cavities can be present at the base, as concluded by the pyrites-enclosures. Except for the cavities, the processes are solid. The process-lenght varies even within the same specimen. Almost all studied specimens posses a horseshoe- shaped pylome. In addition ellipsoidal and almost circular pylomes do occur.
Dimensions: Diameter capsule: 57 (56/59) µm; specimen diameter 106 (101/117) µm; length processes 28 (25/33) µm; pylome daimater c. 28 (25/30) µm (150 specimens measured).
Affinities:
Morgenroth 1966, p. 23: Cordosphaeridium funiculatum
Characteristic for Cordosphaeridium funiculatum is the reticulate pattern of solid ridges on the surface combined with fibrous structures forming the processes, which furcate branches always runs close to each other, instead of away from each other like in Cordosphaeridium inodes ssp. gracile Eisenack.