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Scriniodinium oxfordianum
Scriniodinium oxfordianum Sarjeant, 1962
Originally Scriniodinium, subsequently Endoscrinium, thirdly Sirmiodinium, fourthly (and now) Scriniodinium?. Jan du Chêne et al., 1986 and Brenner, 1988 retained this species in Scriniodinium; however, Lentin and Williams, 1989 retained it in Endoscrinium (Klement, 1960) Vozzhennikova, 1967. Questionable assignment: Riding and Fensome (2003, p.18), who questionably retained this species in Scriniodinium. Riding and Fensome (2003, p.18) considered this species to be a possible junior synonym of Scriniodinium crystallinum.
Holotype: Sarjeant, 1962, pl.69, fig.14
Locus typicus: Hambleton Oolite (10 feet below top), Carr Naze, Filey Brigg, South Yorkshire
Stratum typicum: Oxfordian
Original diagnosis: Sarjeant, 1962, p.485
A species of Scriniodinium, having a cyst of broad ly ellipsoidal shape, one face of whose hypothecal portion is somewhat flattened. Theca ellipsoidal, having a distinct tabulation, apparently 4", 6", 5""", 0p, 0""""; the sutures of ventral surface are unornamented, but sutures elsewhere bear raised crests formed by short spines, quite widely separated, whose tips are linked by a trabecula following the course of the suture.
Dimensions: Holotype: Theca length 100 µm, breadth 82 µm, cyst length 82 µm, breadth 62 µm.
Originally Scriniodinium, subsequently Endoscrinium, thirdly Sirmiodinium, fourthly (and now) Scriniodinium?. Jan du Chêne et al., 1986 and Brenner, 1988 retained this species in Scriniodinium; however, Lentin and Williams, 1989 retained it in Endoscrinium (Klement, 1960) Vozzhennikova, 1967. Questionable assignment: Riding and Fensome (2003, p.18), who questionably retained this species in Scriniodinium. Riding and Fensome (2003, p.18) considered this species to be a possible junior synonym of Scriniodinium crystallinum.
Holotype: Sarjeant, 1962, pl.69, fig.14
Locus typicus: Hambleton Oolite (10 feet below top), Carr Naze, Filey Brigg, South Yorkshire
Stratum typicum: Oxfordian
Original diagnosis: Sarjeant, 1962, p.485
A species of Scriniodinium, having a cyst of broad ly ellipsoidal shape, one face of whose hypothecal portion is somewhat flattened. Theca ellipsoidal, having a distinct tabulation, apparently 4", 6", 5""", 0p, 0""""; the sutures of ventral surface are unornamented, but sutures elsewhere bear raised crests formed by short spines, quite widely separated, whose tips are linked by a trabecula following the course of the suture.
Dimensions: Holotype: Theca length 100 µm, breadth 82 µm, cyst length 82 µm, breadth 62 µm.