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Cyclonephelium clathromarginatum
Cyclonephelium clathromarginatum Cookson and Eisenack, 1962
Holotype: Cookson and Eisenack, 1962, pl.6, fig.2
Age: Late Albian-Cenomanian
Original description: Cookson and Eisenack 1962b, p. 495: Cyclonephelium clathromarginatum
Shell flat, subcircular to approximately oval in plan aspect, with a circumferential border zone delimited by low and straight or fluted clathrate edges, one edge usually being more pronounced than the other. The edges are usually deepest in the antapical region and connected at wide intervals by short, narrow ridges (pl. 6, fig. 4). The sculpture of the shell varies in individual examples from finely to coarsely granular or vermiculate.
Dimensions: Holotype: 136µm broad. Range: 109-130µm long, 104-156µm broad.
Age and occurrence: (?)Upper Albian to Cenomanian: Gingin area, Wapet"s seismic shot hole Bl at 210 ft. Osborne formation, Attadale bore at 354 ft. Probably Cenomanian: Brickhouse bore (1950) at 1210 ft.
Holotype: Cookson and Eisenack, 1962, pl.6, fig.2
Age: Late Albian-Cenomanian
Original description: Cookson and Eisenack 1962b, p. 495: Cyclonephelium clathromarginatum
Shell flat, subcircular to approximately oval in plan aspect, with a circumferential border zone delimited by low and straight or fluted clathrate edges, one edge usually being more pronounced than the other. The edges are usually deepest in the antapical region and connected at wide intervals by short, narrow ridges (pl. 6, fig. 4). The sculpture of the shell varies in individual examples from finely to coarsely granular or vermiculate.
Dimensions: Holotype: 136µm broad. Range: 109-130µm long, 104-156µm broad.
Age and occurrence: (?)Upper Albian to Cenomanian: Gingin area, Wapet"s seismic shot hole Bl at 210 ft. Osborne formation, Attadale bore at 354 ft. Probably Cenomanian: Brickhouse bore (1950) at 1210 ft.