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Chlamydophorella ordinalis
Chlamydophorella ordinalis, (Davey, 1974), Davey, 1978
Now Gardodinium. Originally (and now) Gardodinium, subsequently Chlamydophorella.
Lentin and Williams, 1989, retained this species in Gardodinium Alberti, 1961
Holotype: Davey, 1974, pl.3, fig.6
Locus typicus: Speeton, England
Stratum typicum: middle-late Barremian
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Original description as Gardodinium ordinale: [Davey, 1974, p.51]:
Diagnosis:
The cyst possesses an ovoidal central body surrounded by a weak, close fitting outer wall. The central body has a short, well defined blunt apical horn. The outer wall is also prolonged, in the apical region, to form a tapering horn which is truncated distally. The outer wall is supported by processes which are aligned just inside the plate boundaries. The central portions of the pre- and postcingular plates are, however, mainly devoid of processes. These plates and the cingulum are well defined but are hardly ected by the shape of the outer wall. The processes are solid, with or without vacuoles, aIld expand distally against the outer wall.
The archaeopyle is apical, with the operculum often remaining in position.
Description:
The alignment of the processes and often the presence of large areas practically devoid of processes is very noticeable. The alignment is best seen in the pre- and postcingular regions where on either side of the plate boundaries there is present a single line of processes. The outer wall is more or less equidistant from the central body with no distinctive angularities.
Dimensions: Holotype Range:
Central body length 46 µm 38(45)53 µm
Central body width36 µm 31(38)42 µm
Length of apical horn 12 µm 12-14 µm
Maximum height of crests 3 µm 3-5 µm
Affinities:
G. ordinale differs from G. trabeculosum (Gocht, 1959) by its process alignment, "bald " areas and by the non-angular shape of the outer wall. G. albertii Neale and Sarjeant (1962) differs by the possession of a dense covering of short spines on the central body.
Now Gardodinium. Originally (and now) Gardodinium, subsequently Chlamydophorella.
Lentin and Williams, 1989, retained this species in Gardodinium Alberti, 1961
Holotype: Davey, 1974, pl.3, fig.6
Locus typicus: Speeton, England
Stratum typicum: middle-late Barremian
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Original description as Gardodinium ordinale: [Davey, 1974, p.51]:
Diagnosis:
The cyst possesses an ovoidal central body surrounded by a weak, close fitting outer wall. The central body has a short, well defined blunt apical horn. The outer wall is also prolonged, in the apical region, to form a tapering horn which is truncated distally. The outer wall is supported by processes which are aligned just inside the plate boundaries. The central portions of the pre- and postcingular plates are, however, mainly devoid of processes. These plates and the cingulum are well defined but are hardly ected by the shape of the outer wall. The processes are solid, with or without vacuoles, aIld expand distally against the outer wall.
The archaeopyle is apical, with the operculum often remaining in position.
Description:
The alignment of the processes and often the presence of large areas practically devoid of processes is very noticeable. The alignment is best seen in the pre- and postcingular regions where on either side of the plate boundaries there is present a single line of processes. The outer wall is more or less equidistant from the central body with no distinctive angularities.
Dimensions: Holotype Range:
Central body length 46 µm 38(45)53 µm
Central body width36 µm 31(38)42 µm
Length of apical horn 12 µm 12-14 µm
Maximum height of crests 3 µm 3-5 µm
Affinities:
G. ordinale differs from G. trabeculosum (Gocht, 1959) by its process alignment, "bald " areas and by the non-angular shape of the outer wall. G. albertii Neale and Sarjeant (1962) differs by the possession of a dense covering of short spines on the central body.