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Odontochitina costata
Odontochitina costata Alberti, 1961; emend. Clarke and Verdier, 1967
Tax. sr. synonyrn of Odontochitina striatoperforata Cookson and Eisenack, 1962, according to Clarke and Verdier, 1967.
Singh, 1971, and Morgan, 1980, retained Odontochitina striatoperforata as a separate species, but Yun, 1981, agreed with Clarke and Verdier, 1967.
Holotype: Alberti, 1961, pl.6, fig.12
Locus typicus: Hoppenstedt near Osterwieck, Germany
Stratum typicum: Cenomanian-Turonian
Translation Alberti, 1961: LPP
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Odontochitina costata Alberti, 1961, emend. Clarke and Verdier, 1967. According to Clarke and Verdier (1967), Odontochitina costata has an endocyst generally circular in outline, with long apical and antapical horns which bear a sculptural pattern of striae and perforations. Size holotype, overall 522 µm, length of inner body 88 µm, width 70 µm, length of apical horn 324 µm, length of antapical horns 103 and 110 µm. Other specimens between 480 and 620 µm.
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Original description: Alberti 1961, p. 31
Diagnosis: Central body approximately oval, epitheca more conical than hypotheca, occasionally triangular. With one extremely long, apical projection, which appears at half its length as a thin, spiral shaped, whip-like 'fibre'. The antapical horns approximately of equal length, but shorter than the apical projection. The surface of the projections with long, longitudinal, ¦parallel, fine veins.
Dimensions: Overall length: 480-620 µm.
Emended Diagnosis: Clarke and Verdier, 1967, p. 59
A species of Odontochitina having an inner body generally circular in outline, with long apical and antapical horns, which bear a sculptural pattern of striae and perforations.
Supplemental description: Davey, 1970, p. 355
The shape of the shell is very similar to that of O. operculata. The shell surface may be smooth or very lightly punctate. The central body commonly possesses a small apical protruberance and more rarely a small protruberance opposite each of the antapical horns. Both apical and antapical horns possess 2 to 4 striations along their entire length and typically have a small number of large circular to elongate perforations. The striations are low ridges formed by a slight thickening of the horn periphragm. On one specimen, a small process is situated at the proximal end of the small antapical horn. The apical region is typically removed in archaeopyle formation.
Tax. sr. synonyrn of Odontochitina striatoperforata Cookson and Eisenack, 1962, according to Clarke and Verdier, 1967.
Singh, 1971, and Morgan, 1980, retained Odontochitina striatoperforata as a separate species, but Yun, 1981, agreed with Clarke and Verdier, 1967.
Holotype: Alberti, 1961, pl.6, fig.12
Locus typicus: Hoppenstedt near Osterwieck, Germany
Stratum typicum: Cenomanian-Turonian
Translation Alberti, 1961: LPP
--------------------------------------------------
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Odontochitina costata Alberti, 1961, emend. Clarke and Verdier, 1967. According to Clarke and Verdier (1967), Odontochitina costata has an endocyst generally circular in outline, with long apical and antapical horns which bear a sculptural pattern of striae and perforations. Size holotype, overall 522 µm, length of inner body 88 µm, width 70 µm, length of apical horn 324 µm, length of antapical horns 103 and 110 µm. Other specimens between 480 and 620 µm.
--------------------------------------------------
Original description: Alberti 1961, p. 31
Diagnosis: Central body approximately oval, epitheca more conical than hypotheca, occasionally triangular. With one extremely long, apical projection, which appears at half its length as a thin, spiral shaped, whip-like 'fibre'. The antapical horns approximately of equal length, but shorter than the apical projection. The surface of the projections with long, longitudinal, ¦parallel, fine veins.
Dimensions: Overall length: 480-620 µm.
Emended Diagnosis: Clarke and Verdier, 1967, p. 59
A species of Odontochitina having an inner body generally circular in outline, with long apical and antapical horns, which bear a sculptural pattern of striae and perforations.
Supplemental description: Davey, 1970, p. 355
The shape of the shell is very similar to that of O. operculata. The shell surface may be smooth or very lightly punctate. The central body commonly possesses a small apical protruberance and more rarely a small protruberance opposite each of the antapical horns. Both apical and antapical horns possess 2 to 4 striations along their entire length and typically have a small number of large circular to elongate perforations. The striations are low ridges formed by a slight thickening of the horn periphragm. On one specimen, a small process is situated at the proximal end of the small antapical horn. The apical region is typically removed in archaeopyle formation.