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Comparodinium lineatum
Comparodinium lineatum, Wille and Gocht, 1979
Holotype: Wille and Gocht, 1979, figs.13a-b; fig.27, nos.9a-b
Locus typicus: Jebenhausen, Swabian Alb, S Germany
Stratum typicum: Early Toarcian
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Original description: [Wille and Gocht, 1979, p. 235, 237]: (Translation: LPP):
Diagnosis:
Body ellipsoidal to rounded-cylindrical, with very thin, single-layered wall. Two broad zones (before and behind the cingulum) are characterized by longitudinal rows of tiny cones or thorns or by ledge-like crests; they occupy the pre- and post-cingular area.
The cingulum is smooth and unsegmented. The apical, anterior and posterior intercalary and antapical regions have an ornamentation consisting of small cones or short thorns, which often indicate the tabulation by means of sutural or intratabular elements. A flagellar scar may be present.
The archaeopyle corresponds to the middorsal apical plates 3" and 4".
Dimensions:
holotype length 35 µm, width 21 µm.
Affinities:
The ornamentation differs clearly from the presumably related form C. stipulatum: the adcingular areas are set strictly with longitudinal lines or ledges, whereas isolated elements are restricted to the adpolar areas and which also there attain a higher degree of arrangement.
As opposed to C. scalatum, C. lineatum is overall smaller and more delicate. As far as the longitudinal elements are developed as ladders, they are essentially lower. Also the remaining ornamentation is much more delicate. The species scalatum and lineatum are morphologically closer in the Lias delta than in the Lias epsilon.
Because, by the sutural arrangement of its elements, C. lineatum often shows intercalary plate boundaries, it is similar to C. puncatatum. In C. scalatum, on the other hand, at best intratabular thorns can be recognized.
Holotype: Wille and Gocht, 1979, figs.13a-b; fig.27, nos.9a-b
Locus typicus: Jebenhausen, Swabian Alb, S Germany
Stratum typicum: Early Toarcian
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Wille and Gocht, 1979, p. 235, 237]: (Translation: LPP):
Diagnosis:
Body ellipsoidal to rounded-cylindrical, with very thin, single-layered wall. Two broad zones (before and behind the cingulum) are characterized by longitudinal rows of tiny cones or thorns or by ledge-like crests; they occupy the pre- and post-cingular area.
The cingulum is smooth and unsegmented. The apical, anterior and posterior intercalary and antapical regions have an ornamentation consisting of small cones or short thorns, which often indicate the tabulation by means of sutural or intratabular elements. A flagellar scar may be present.
The archaeopyle corresponds to the middorsal apical plates 3" and 4".
Dimensions:
holotype length 35 µm, width 21 µm.
Affinities:
The ornamentation differs clearly from the presumably related form C. stipulatum: the adcingular areas are set strictly with longitudinal lines or ledges, whereas isolated elements are restricted to the adpolar areas and which also there attain a higher degree of arrangement.
As opposed to C. scalatum, C. lineatum is overall smaller and more delicate. As far as the longitudinal elements are developed as ladders, they are essentially lower. Also the remaining ornamentation is much more delicate. The species scalatum and lineatum are morphologically closer in the Lias delta than in the Lias epsilon.
Because, by the sutural arrangement of its elements, C. lineatum often shows intercalary plate boundaries, it is similar to C. puncatatum. In C. scalatum, on the other hand, at best intratabular thorns can be recognized.