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Toolongia
From Fensome et al., 2019:
Toolongia Cookson and Eisenack, 1960a, p.14. Taxonomic senior synonym: Dinopterygium, according to Stover and Evitt (1978, p.205). Type: Cookson and Eisenack, 1960a, pl.3, fig.11, as Toolongia medusoides.
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Original description: [Cookson and Eisenack, 1969]:
Description:
Shell hemisphaerical, circular to oval in outline; shell membrane thin, raised on the "upper" surface into a number of radiating ledges, some of which join and form distinct fields.
Toolongia Cookson and Eisenack, 1960a, p.14. Taxonomic senior synonym: Dinopterygium, according to Stover and Evitt (1978, p.205). Type: Cookson and Eisenack, 1960a, pl.3, fig.11, as Toolongia medusoides.
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Original description: [Cookson and Eisenack, 1969]:
Description:
Shell hemisphaerical, circular to oval in outline; shell membrane thin, raised on the "upper" surface into a number of radiating ledges, some of which join and form distinct fields.