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Valvaeodinium punctatum
Valvaeodinium punctatum (Wille and Gocht, 1979, p.228–231) Below, 1987b, p.73. Emendation: Below, 1987b, p.73, as Valvaeodinium punctatum
Originally Comparodinium, subsequently (and now) Valvaeodinium.
Holotype: Wille and Gocht, 1979, figs.3a-b; fig.26, nos.1a-b
Originally Comparodinium, subsequently (and now) Valvaeodinium.
Age: Pliensbachian-Toarcian
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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.
Valvaeodinium punctatum (Wille and Gocht, 1979) Below, 1987b, emend Below, 1987b. According to Below (1987b, p. 73), Valvaeodinium punctatum has the tabulation formula of pr, 4', 1a, 5", nrc, 5"’, 1"”. The cyst is proximate, acavate, oblong ellipsoidal to cylindrical, size small. The wall is composed of firm pedium, surface scabrate with very low luxuriate coni, tubercles, baculi, and granules in penitabular, intratabular or finite locations, cingulum and sulcus not marked by processes and not indented on the cyst. Archeopyle apical/intercalary, 3' + 1a; operculum solvate, secate, general opercular formula 3's + 1as. V. punctatum differs from V. lineatum in not having scalariform combs or ridges on the adcingular regions and in having a characteristic pattern of dots. Size: length 36-72 µm.
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Original diagnosis: Wille and Gocht, 1979, p. 228
Outline elliptical, with smooth, single-layered wall. Ornamentation pattern consisting of small cones, granae or short thorns, which mark the boundaries and centers of the paraplates.
Formula: 1pr, 5", 5-6a, X"", Xc, X""", 5p, 1""""; pv+?4s. Archaeopyle apical, normally through the loss of 3" and 4" (often additionally pr, 2" and 5", and occasionally 1").
Dimensions: Holotype: length 53 µm, width 34 µm.
Emended description; Below, 1987, p. 73
Vesicle/plate arrangement on amphiesma PR, 4', 1a, 5'', 6c, 5''', 1'''', ns. Growth of thecal plates peridinoidal. Cyst proximate, acavate, oblong ellipsoidal to cylindrical; size small; wall composed of firm pedium, surface scabrate with very low luxuriate coni, tubercles, baculi, and granules in peniareate, intraareate, or finate locations, cingulum and sulcus not marked by processes and not indented on the cyst; paratabulation formula XPR, 4', 1a, 5'', NRc, 5''', 1'''', NRs; archaeopyle apical/anterior intercalary, 3'+1a; operculum solvate, secate, general opecular formula 3'(s)+1a(s).
Originally Comparodinium, subsequently (and now) Valvaeodinium.
Holotype: Wille and Gocht, 1979, figs.3a-b; fig.26, nos.1a-b
Originally Comparodinium, subsequently (and now) Valvaeodinium.
Age: Pliensbachian-Toarcian
--------------------------------------------------
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Valvaeodinium punctatum (Wille and Gocht, 1979) Below, 1987b, emend Below, 1987b. According to Below (1987b, p. 73), Valvaeodinium punctatum has the tabulation formula of pr, 4', 1a, 5", nrc, 5"’, 1"”. The cyst is proximate, acavate, oblong ellipsoidal to cylindrical, size small. The wall is composed of firm pedium, surface scabrate with very low luxuriate coni, tubercles, baculi, and granules in penitabular, intratabular or finite locations, cingulum and sulcus not marked by processes and not indented on the cyst. Archeopyle apical/intercalary, 3' + 1a; operculum solvate, secate, general opercular formula 3's + 1as. V. punctatum differs from V. lineatum in not having scalariform combs or ridges on the adcingular regions and in having a characteristic pattern of dots. Size: length 36-72 µm.
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Original diagnosis: Wille and Gocht, 1979, p. 228
Outline elliptical, with smooth, single-layered wall. Ornamentation pattern consisting of small cones, granae or short thorns, which mark the boundaries and centers of the paraplates.
Formula: 1pr, 5", 5-6a, X"", Xc, X""", 5p, 1""""; pv+?4s. Archaeopyle apical, normally through the loss of 3" and 4" (often additionally pr, 2" and 5", and occasionally 1").
Dimensions: Holotype: length 53 µm, width 34 µm.
Emended description; Below, 1987, p. 73
Vesicle/plate arrangement on amphiesma PR, 4', 1a, 5'', 6c, 5''', 1'''', ns. Growth of thecal plates peridinoidal. Cyst proximate, acavate, oblong ellipsoidal to cylindrical; size small; wall composed of firm pedium, surface scabrate with very low luxuriate coni, tubercles, baculi, and granules in peniareate, intraareate, or finate locations, cingulum and sulcus not marked by processes and not indented on the cyst; paratabulation formula XPR, 4', 1a, 5'', NRc, 5''', 1'''', NRs; archaeopyle apical/anterior intercalary, 3'+1a; operculum solvate, secate, general opecular formula 3'(s)+1a(s).