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Paralecaniella
From Williams et al., 2017:
[Paralecaniella, Cookson and Eisenack, 1970b, p. 323; Emendation: Elsik, 1977, p. 96
Acritarchs or schizosporous algae, according to Elsik., 1977
Acritarch genus, according to Fensome et al., 1990.
Type species: originally as Epicephalopyxis indentata, Deflandre and Cookson, 1955 (pl.9, fig.6)] ; Paralecaniella indentata, Cookson and Eisenack, 1970; emend. Elsik, 1977
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Original description: [Cookson and Eisenack, 1970]: (Translation: LPP):
Diagnosis:
Small, in outline nearly oval, weakly banded, bowl-shaped shells of organic, transparent matter with just slightly thickened margin, without ornamentation and without surrounding flange.
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Emended description:
Elsik, 1977:
Description:
Half specimens occur as shallow saucers with roughly cingular to oval amb. Wall of two distinct layers are occasionally tightly appressed. Endophragm psilate to scabrate with thinned margin folded in towards the center of a specimen. A thin, psilate operculum occurs in some half specimens. Periphragm psilate to granulose to verrucose to rugulose; periphragmal ornamentation may be the same as over the outer surface, or it may be much elongated as a thin fimy frill or it may be composed of spines supporting one or several obscure layers of material. Ornamental elements are solid or hollow. Entire specimens occasionally occur; one half may have an obscure to distinct indentation which may represent either an equatorial cingulum or sulcus depending on orientation of living organism; this half displays relatively coarser ornament. The cingulum or sulcus is delineated by one or two parallel rows of slightly raised or coarsened ornament on the periphragm; no indication of this feature occurs on the endophragm. This raised or coarsened ornament is never frilly or spinose except at the periphery of some specimens. Expression of the equatorial cingulum/sulcus at the periphery is a notch in the ornamentation; a depressed periphragm margin or in foldings of the periphragm apparently anchors the endophragm.
[Paralecaniella, Cookson and Eisenack, 1970b, p. 323; Emendation: Elsik, 1977, p. 96
Acritarchs or schizosporous algae, according to Elsik., 1977
Acritarch genus, according to Fensome et al., 1990.
Type species: originally as Epicephalopyxis indentata, Deflandre and Cookson, 1955 (pl.9, fig.6)] ; Paralecaniella indentata, Cookson and Eisenack, 1970; emend. Elsik, 1977
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Original description: [Cookson and Eisenack, 1970]: (Translation: LPP):
Diagnosis:
Small, in outline nearly oval, weakly banded, bowl-shaped shells of organic, transparent matter with just slightly thickened margin, without ornamentation and without surrounding flange.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Emended description:
Elsik, 1977:
Description:
Half specimens occur as shallow saucers with roughly cingular to oval amb. Wall of two distinct layers are occasionally tightly appressed. Endophragm psilate to scabrate with thinned margin folded in towards the center of a specimen. A thin, psilate operculum occurs in some half specimens. Periphragm psilate to granulose to verrucose to rugulose; periphragmal ornamentation may be the same as over the outer surface, or it may be much elongated as a thin fimy frill or it may be composed of spines supporting one or several obscure layers of material. Ornamental elements are solid or hollow. Entire specimens occasionally occur; one half may have an obscure to distinct indentation which may represent either an equatorial cingulum or sulcus depending on orientation of living organism; this half displays relatively coarser ornament. The cingulum or sulcus is delineated by one or two parallel rows of slightly raised or coarsened ornament on the periphragm; no indication of this feature occurs on the endophragm. This raised or coarsened ornament is never frilly or spinose except at the periphery of some specimens. Expression of the equatorial cingulum/sulcus at the periphery is a notch in the ornamentation; a depressed periphragm margin or in foldings of the periphragm apparently anchors the endophragm.