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Heterosphaeridium galiciae
Heterosphaeridium? galiciae Masure, 1988
Masure, 1988, questionably included this species in Heterosphaeridium
Holotype: Masure, 1988, pl.2, figs.5A-C
Locus typicus: Site 638 of ODP Leg 103, on the southwesl edge of the Galicia Bank, offshore Spain
Stratum typicum: Late Hauterivian
Original diagnosis: Masure, 1988, p.439
This proximochorate two-layered dinoflagellate cyst has a subspheroidal central body. Periphragm and endophragm are appnessed between processes. The intratabular hollow processes have broad bases and gradually taper to the tips, which display a truncated distal margin. Gonyaulacoid panatabulation: 4 apicals, 6 precingulars, X cingulars, 5-6 postcingulars, ?1 posterior intercalary, 1 antapical, and X sulcals Apical archeopyle is (4A) or 4A, with accessory sutures between the precingular paraplates. The operculum is free.
Original description: Masure, 1988, p.439
Subspheroidal lightly-pitted central body has a sulcal notch that is not displaced to the left. The two layers are closely appressed except wene the periphragm forms the processes. Intratabular processes are simple or branched and slightly costulate. They are not reduced in size on the ventral face. The hollow processes usually branch medially to give rise to two or four main branches, and these may give rise to further short branches that are truncated distally. Accessory archeopyle sutures are developed between the precinguiar paraplates.
Dimensions. Holotype: Total length: 60 Ám. Central body: length 42 Ám Central body breadth: 47 Ám. Processes: length 18 Ám, basal breadth 2 and 3 Ám, and distal breadth 0.5 and 1 Ám. Six well-oriented individuals without the operculum: Length: 67(64)60 Ám. Central body length: 52(48)45 Ám. Central body breadth: 52(50)47 Ám. Processes: length: 18(16)14 Ám, basal breadth: 2 and 3 Ám, distal breadth: 0.5 and 1 Ám. Individual with operculum, one specimen: Diameter: 56 Ám.
Affinities:
Masure, 1988, p.439: The ? is introduced in naming because of the uncertain shape of the central body in the diagnosis of the genus Heterosphaeridium because of the processes of Heterosphaeridium? galiciae are hollow. Processes of the other species ane hollow and solid.
Masure, 1988, questionably included this species in Heterosphaeridium
Holotype: Masure, 1988, pl.2, figs.5A-C
Locus typicus: Site 638 of ODP Leg 103, on the southwesl edge of the Galicia Bank, offshore Spain
Stratum typicum: Late Hauterivian
Original diagnosis: Masure, 1988, p.439
This proximochorate two-layered dinoflagellate cyst has a subspheroidal central body. Periphragm and endophragm are appnessed between processes. The intratabular hollow processes have broad bases and gradually taper to the tips, which display a truncated distal margin. Gonyaulacoid panatabulation: 4 apicals, 6 precingulars, X cingulars, 5-6 postcingulars, ?1 posterior intercalary, 1 antapical, and X sulcals Apical archeopyle is (4A) or 4A, with accessory sutures between the precingular paraplates. The operculum is free.
Original description: Masure, 1988, p.439
Subspheroidal lightly-pitted central body has a sulcal notch that is not displaced to the left. The two layers are closely appressed except wene the periphragm forms the processes. Intratabular processes are simple or branched and slightly costulate. They are not reduced in size on the ventral face. The hollow processes usually branch medially to give rise to two or four main branches, and these may give rise to further short branches that are truncated distally. Accessory archeopyle sutures are developed between the precinguiar paraplates.
Dimensions. Holotype: Total length: 60 Ám. Central body: length 42 Ám Central body breadth: 47 Ám. Processes: length 18 Ám, basal breadth 2 and 3 Ám, and distal breadth 0.5 and 1 Ám. Six well-oriented individuals without the operculum: Length: 67(64)60 Ám. Central body length: 52(48)45 Ám. Central body breadth: 52(50)47 Ám. Processes: length: 18(16)14 Ám, basal breadth: 2 and 3 Ám, distal breadth: 0.5 and 1 Ám. Individual with operculum, one specimen: Diameter: 56 Ám.
Affinities:
Masure, 1988, p.439: The ? is introduced in naming because of the uncertain shape of the central body in the diagnosis of the genus Heterosphaeridium because of the processes of Heterosphaeridium? galiciae are hollow. Processes of the other species ane hollow and solid.