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Hystrichosphaeridium raritanianum
Hystrichosphaeridium raritanianum Kimyai, 1966
Stover and Evitt, 1978, considered this to be a problematical species of Hystrichosphaeridium.
Holotype: Kimyai, 1966, pl.2, fig.19
Locus typicus: New Jersey, U.S.A.
Stratum typicum: Cenomanian
Original diagnosis: Kimyai, 1966, p.471
Body almost circular in equatorial contour, laevigate; appendages 4-6 µm long, 3-6 µm wide, variable in shape; tips of appendages irregularly bifurcate; number of appendages 8-12.
Dimensions: Equatorial diameter 39-46 µm. Holotype: Equatorial diameter 42 µm.
Affinities:
Kimyai, 1966, p.471: This form differs from Hystrichosphaeridium tubiferum by its short, wide appendages and larger central body.
Stover and Evitt, 1978, considered this to be a problematical species of Hystrichosphaeridium.
Holotype: Kimyai, 1966, pl.2, fig.19
Locus typicus: New Jersey, U.S.A.
Stratum typicum: Cenomanian
Original diagnosis: Kimyai, 1966, p.471
Body almost circular in equatorial contour, laevigate; appendages 4-6 µm long, 3-6 µm wide, variable in shape; tips of appendages irregularly bifurcate; number of appendages 8-12.
Dimensions: Equatorial diameter 39-46 µm. Holotype: Equatorial diameter 42 µm.
Affinities:
Kimyai, 1966, p.471: This form differs from Hystrichosphaeridium tubiferum by its short, wide appendages and larger central body.