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Geiselodinium maslinense
From Fensome et al., 2019:
Geiselodinium maslinense (Harris, 1974, p.164, pl.2, fig.10) Stover and Evitt, 1978, p.231. Holotype: Harris, 1974, pl.2, fig.10.
Originally Cubiculosphaera, subsequently (and now) Geiselodinium. Age: Middle Eocene.
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Original description: [Harris, 1974]:
Cubiculosphaera maslinensis sp. nov.
(Plate 2, Fig. 10)
Diagnosis: Endocorpus and pericorpus ovoidal, breadth greater than length. Pericorpus and endocorpus have two slight antapical bulges.
Endophragm slightly granulate and peripbragm smooth to scabrate. Pericoel very narrow, 1-2 wide, and endophragm often closely adpressed to periphragm. No girdle or archeopyle observed.
Holotype: Plate 2, Figure 10. North Maslin Sands, Middle Eocene, South Australia.
Description: This type is distilctive in its shape and is often much folđed, Both periphragm and endopbragm are of equal thickness, 0.5-1μ. The fine omament which is more prominent on the endophragm does not reflect any tabulation.
Dimensions: (10 specimens)
Overall length 45-60 μ.
Overall breadth 53-65 μ.
Remarks: This species resembles closely in form the extant genus Glenodinium Ehrenberg, 1837. Characteristically the cyst type described here offers little in the way of morphological criteria such as tabulation or archeopyle formation. Known only from the North Maslin Sands clay lens at Maslin Bay, South Australia.
Geiselodinium maslinense (Harris, 1974, p.164, pl.2, fig.10) Stover and Evitt, 1978, p.231. Holotype: Harris, 1974, pl.2, fig.10.
Originally Cubiculosphaera, subsequently (and now) Geiselodinium. Age: Middle Eocene.
---------------------------------------------------------------------------------------------------
Original description: [Harris, 1974]:
Cubiculosphaera maslinensis sp. nov.
(Plate 2, Fig. 10)
Diagnosis: Endocorpus and pericorpus ovoidal, breadth greater than length. Pericorpus and endocorpus have two slight antapical bulges.
Endophragm slightly granulate and peripbragm smooth to scabrate. Pericoel very narrow, 1-2 wide, and endophragm often closely adpressed to periphragm. No girdle or archeopyle observed.
Holotype: Plate 2, Figure 10. North Maslin Sands, Middle Eocene, South Australia.
Description: This type is distilctive in its shape and is often much folđed, Both periphragm and endopbragm are of equal thickness, 0.5-1μ. The fine omament which is more prominent on the endophragm does not reflect any tabulation.
Dimensions: (10 specimens)
Overall length 45-60 μ.
Overall breadth 53-65 μ.
Remarks: This species resembles closely in form the extant genus Glenodinium Ehrenberg, 1837. Characteristically the cyst type described here offers little in the way of morphological criteria such as tabulation or archeopyle formation. Known only from the North Maslin Sands clay lens at Maslin Bay, South Australia.