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Kalyptea indica
From Fensome et al., 2019:
Kalyptea? indica Jain and Maheshwari in Jain et al., 1982, p.24–25, pl.1, figs.7–12; text-figs.1A–C. Holotype: Jain et al., 1982, pl.1, figs.8–9. Originally Kalyptea, subsequently (and now) Kalyptea?. Questionable assignment: Lentin and Williams (1985, p.205). Age: ?Late Jurassic.
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Original description (Jain et al., 1982)
Diagnosis - Cyst ellipsoidal, thin-walled, single-layered, folds frequent, surface finely granulate, apical and antapical horns well developed; apical horn longer and broader than antapical horn, gradually tapering, tip rounded; an ta pi cal horn usually short, narrow, pointed. Central part of cyst inflated-elongate. Kalyptra and apical structures totally absent. Archaeopyle intercallary probably made up of types 2I to 3I
Measurements in µm Holotype/Range
Cyst size 125x165 / 78-125x50-70
Apical horn size 40x16 / 30-50x13-20
Antapical horn size 20x8 / 13-20x8-10
Comparison - Twenty-five specimens belonging to Kalyptea indica Jain & Maheshwari sp. nov. have been studied. The preservation of the forms is not very satisfactory, damaged specimens are frequently recovered. The species compares best with K. diceras Cookson & Eisenack, 1960 in having unequal horns and thin and finely granulate cyst wall but differs in having inflated elongate central part and no kalyptra. The rhombic shape of K. glabra (Cookson & Eisenack) Wiggins, 1975 easily distinguishes it from K. indica. Remarks - Morgan (1975) has reported similar single-layered cysts as Fusiformacysta from the Lower Cretaceous of Australia, having precingular archaeopyle. The species F. salasii is believed by Morgan (1975, p. 164) to be a non-marine dinofiagellate cyst.
Kalyptea? indica Jain and Maheshwari in Jain et al., 1982, p.24–25, pl.1, figs.7–12; text-figs.1A–C. Holotype: Jain et al., 1982, pl.1, figs.8–9. Originally Kalyptea, subsequently (and now) Kalyptea?. Questionable assignment: Lentin and Williams (1985, p.205). Age: ?Late Jurassic.
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Original description (Jain et al., 1982)
Diagnosis - Cyst ellipsoidal, thin-walled, single-layered, folds frequent, surface finely granulate, apical and antapical horns well developed; apical horn longer and broader than antapical horn, gradually tapering, tip rounded; an ta pi cal horn usually short, narrow, pointed. Central part of cyst inflated-elongate. Kalyptra and apical structures totally absent. Archaeopyle intercallary probably made up of types 2I to 3I
Measurements in µm Holotype/Range
Cyst size 125x165 / 78-125x50-70
Apical horn size 40x16 / 30-50x13-20
Antapical horn size 20x8 / 13-20x8-10
Comparison - Twenty-five specimens belonging to Kalyptea indica Jain & Maheshwari sp. nov. have been studied. The preservation of the forms is not very satisfactory, damaged specimens are frequently recovered. The species compares best with K. diceras Cookson & Eisenack, 1960 in having unequal horns and thin and finely granulate cyst wall but differs in having inflated elongate central part and no kalyptra. The rhombic shape of K. glabra (Cookson & Eisenack) Wiggins, 1975 easily distinguishes it from K. indica. Remarks - Morgan (1975) has reported similar single-layered cysts as Fusiformacysta from the Lower Cretaceous of Australia, having precingular archaeopyle. The species F. salasii is believed by Morgan (1975, p. 164) to be a non-marine dinofiagellate cyst.