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Luehndea cirilliae
Luehndea cirilliae Bucefalo Palliani et al. 1997b
Holotype: Bucefalo Palliani et al. 1997b: Pl. I, figs. 1-2
Type locality: Reka Valley section, sample Reka 3; 8 m from the base, southern Hungary.
Stratigraphic horizon: Upper Pliensbachian (Domerian, P. spinatum Zone) and lower Toarcian (D. tenuicostatum Zone and lower H. falciferum Zone).
Diagnosis: Bucefalo Palliani et al. 1997b, p. 115-116
A species of Luehndea with hollow, conical-gonal spines and a more or less smooth autophragm.
Description: Bucefalo Palliani et al. 1997b, p. 115-116
Ellipsoidal, proximochorate to chorate dinoflagellate cysts, central body subovoidal in dorsoventral outline. A short apical or antapical protuberance (about 3 ,um long) is often present. Autophragm generally smooth or microscabrate. Paratabulation is expressed by smooth parasutural ridges. These are high or low in relief and their height ranges from 1.5 to 4Ám, even within a single specimen; locally they may be absent. Several gonal homomorphic processes are present. They are hollow, conical, sinuous and distally acuminate. The basal diameter of the processes ranges from 2 to 4Ám. The paracingulum is delimited by low, transverse, parallel parasutural ridges. The operculum is commonly attached ventrally, but may be free.
Dimensions:
Holotype: Length 35.7Ám, width 30Ám, processes 10Ám, apical protuberance 2.8Ám, antapical protuberance 3.5Ám.
Overall cyst length: minimum 32.1Ám; mean 36.7Ám; maximum 42.2Ám. Overall cyst width: minimum 25Ám; mean 34.4Ám; maximum 37Ám. Processes 10Ám (mean value); apical-antapical protuberance 3.4Ám (mean value); cingulum 2.8Ám (mean value) (15 specimens measured).
Discussion: Bucefalo Palliani et al. 1997b, p. 115-116
Luehndea cirilliae exhibits hollow, conical, sinuous and distally acuminate processes, whereas Luehndea spinosa is ornamented by solid, straight spines. Luehndea cirilliae and L. spinosa are ornamented with homomorphic processes, while Luehndea microreticulata exhibit heteromorphic processes (hollow or solid, conical or acicular). Luehndea sp. A of Baldanza et al. (1995) is considered to be L. cirilliae.
Holotype: Bucefalo Palliani et al. 1997b: Pl. I, figs. 1-2
Type locality: Reka Valley section, sample Reka 3; 8 m from the base, southern Hungary.
Stratigraphic horizon: Upper Pliensbachian (Domerian, P. spinatum Zone) and lower Toarcian (D. tenuicostatum Zone and lower H. falciferum Zone).
Diagnosis: Bucefalo Palliani et al. 1997b, p. 115-116
A species of Luehndea with hollow, conical-gonal spines and a more or less smooth autophragm.
Description: Bucefalo Palliani et al. 1997b, p. 115-116
Ellipsoidal, proximochorate to chorate dinoflagellate cysts, central body subovoidal in dorsoventral outline. A short apical or antapical protuberance (about 3 ,um long) is often present. Autophragm generally smooth or microscabrate. Paratabulation is expressed by smooth parasutural ridges. These are high or low in relief and their height ranges from 1.5 to 4Ám, even within a single specimen; locally they may be absent. Several gonal homomorphic processes are present. They are hollow, conical, sinuous and distally acuminate. The basal diameter of the processes ranges from 2 to 4Ám. The paracingulum is delimited by low, transverse, parallel parasutural ridges. The operculum is commonly attached ventrally, but may be free.
Dimensions:
Holotype: Length 35.7Ám, width 30Ám, processes 10Ám, apical protuberance 2.8Ám, antapical protuberance 3.5Ám.
Overall cyst length: minimum 32.1Ám; mean 36.7Ám; maximum 42.2Ám. Overall cyst width: minimum 25Ám; mean 34.4Ám; maximum 37Ám. Processes 10Ám (mean value); apical-antapical protuberance 3.4Ám (mean value); cingulum 2.8Ám (mean value) (15 specimens measured).
Discussion: Bucefalo Palliani et al. 1997b, p. 115-116
Luehndea cirilliae exhibits hollow, conical, sinuous and distally acuminate processes, whereas Luehndea spinosa is ornamented by solid, straight spines. Luehndea cirilliae and L. spinosa are ornamented with homomorphic processes, while Luehndea microreticulata exhibit heteromorphic processes (hollow or solid, conical or acicular). Luehndea sp. A of Baldanza et al. (1995) is considered to be L. cirilliae.