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Endoscrinium oxfordianum
Endoscrinium oxfordianum (Sarjeant, 1962) Vozzhennikova, 1967
Originally Scriniodinium, subsequently (and now) Endoscrinium, thirdly Sirmiodinium.
Jan du Chêne et al., 1986, retained this species in Scriniodinium Klement, 1957. Lentin and Williams, 1989, retained it in Endoscrinium.
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: Scriniodinium oxfordianum
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 (and now) Endoscrinium, thirdly Sirmiodinium.
Jan du Chêne et al., 1986, retained this species in Scriniodinium Klement, 1957. Lentin and Williams, 1989, retained it in Endoscrinium.
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: Scriniodinium oxfordianum
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.