Back
Pareodinia strongyla
Parodinia strongylum (Sarjeant, 1966) Below, 1990
Originally Paranetrelytron, subsequently Pareodinia.
Tax. jr. synonym of Pareodinia ceratophora Deflandre, 1947, according to Wiggins, 1975 and Kunz, 1990.
Holotype: Sarjeant, 1966, pl.21, fig.5; pl.23, fig.5
Locus typicus: Speeton Clay, West Heslerton, England
Stratum typicum: Early Barremian, Early Cretaceous
Original diagnosis: Sarjeant, 1966, p. 201: Paranetrelytron strongylum
A Paranetrelyton having a spheroidal outer body tapering smoothly to form short, blunt apical horn. Inner body spheroidal and relatively large, thin-walled and often hard to distinguish. A poorly-marked cingulum sometimes present. Endophragm and periphragm smooth or only very minutely granular.
Dimensions: Holotype: overall length 56 µm, breadth 45 µm, length of apical horn 10 µm; length of inner body ca.40 µm, breadth ca.40 µm. Range of dimensions: overall lengths 51-58 µm.
Original descriptoin: Sarjeant, 1966, p. 202: Paranetrelytron strongylum
The holotype is enclosed in a roughly oval cloak of debris; in the three other specimens observed to date, the debris cloak was comparable. The enclosing body is roughly lemon-shaped. The inner body fits quite closely, except at the apical end where there is a quite large expansion of the pericoel. It is thin and transparent and, as a result, very hard to distinguish; its presence was confirmed only under phase contrast. The debris cloak of the holotype contains a ball-like mass of debris immediately posterior to the antapex. This structure is of doubtful significance and may simply represent fortuitous adherence of organic debris from a quite unrelated source. An archaeopyle has not been observed to date.
Originally Paranetrelytron, subsequently Pareodinia.
Tax. jr. synonym of Pareodinia ceratophora Deflandre, 1947, according to Wiggins, 1975 and Kunz, 1990.
Holotype: Sarjeant, 1966, pl.21, fig.5; pl.23, fig.5
Locus typicus: Speeton Clay, West Heslerton, England
Stratum typicum: Early Barremian, Early Cretaceous
Original diagnosis: Sarjeant, 1966, p. 201: Paranetrelytron strongylum
A Paranetrelyton having a spheroidal outer body tapering smoothly to form short, blunt apical horn. Inner body spheroidal and relatively large, thin-walled and often hard to distinguish. A poorly-marked cingulum sometimes present. Endophragm and periphragm smooth or only very minutely granular.
Dimensions: Holotype: overall length 56 µm, breadth 45 µm, length of apical horn 10 µm; length of inner body ca.40 µm, breadth ca.40 µm. Range of dimensions: overall lengths 51-58 µm.
Original descriptoin: Sarjeant, 1966, p. 202: Paranetrelytron strongylum
The holotype is enclosed in a roughly oval cloak of debris; in the three other specimens observed to date, the debris cloak was comparable. The enclosing body is roughly lemon-shaped. The inner body fits quite closely, except at the apical end where there is a quite large expansion of the pericoel. It is thin and transparent and, as a result, very hard to distinguish; its presence was confirmed only under phase contrast. The debris cloak of the holotype contains a ball-like mass of debris immediately posterior to the antapex. This structure is of doubtful significance and may simply represent fortuitous adherence of organic debris from a quite unrelated source. An archaeopyle has not been observed to date.