Back
Samlandia angustivela
Samlandia? angustivela (Deflandre and Cookson, 1955) Eisenack, 1963
Now Membranilarnacia. Originally Membranilarnax, subsequently Samlandia, thirdly (and now) Membranilarnacia. Stover and Evitt, 1978 considered this to
be a "provisionally accepted species" of Samlandia.
Holotype: Deflandre and Cookson, 1955, pl.7, fig.4; McMinn, 1988, fig.8C
Locus typicus: Birregurra, Victoria, bore No. 1, at 791 - 795 ft.
Stratum typicum: ?Early Eocene
Original diagnosis: Deflandre and Cookson, 1955, p.290: Membranilarnax angustivela
Shell ellipsoidal or almost globular, with a rather thick membrane enveloped in a 2nd delicate membrane that is supported by short processes. These processes are either simple or more often grouped so as to form twisted lamellae which have a worm-like appearance in surface view. External outline irregularly wavy.
Dimensions: Holotype: shell 54 by 41 µm, overall 67 by 54 µm, height c. 5 µm. Range: shell alone 41 - 59 µm, overall diameter 51 - 72 µm.
Affinities (annotated):
Deflandre and Cookson, 1955, p.290: Membranilarnax angustivela
This species . . . differs very clearly from the known species, particularly in the short distance that separates the outer veil from the true shell membrane.
Now Membranilarnacia. Originally Membranilarnax, subsequently Samlandia, thirdly (and now) Membranilarnacia. Stover and Evitt, 1978 considered this to
be a "provisionally accepted species" of Samlandia.
Holotype: Deflandre and Cookson, 1955, pl.7, fig.4; McMinn, 1988, fig.8C
Locus typicus: Birregurra, Victoria, bore No. 1, at 791 - 795 ft.
Stratum typicum: ?Early Eocene
Original diagnosis: Deflandre and Cookson, 1955, p.290: Membranilarnax angustivela
Shell ellipsoidal or almost globular, with a rather thick membrane enveloped in a 2nd delicate membrane that is supported by short processes. These processes are either simple or more often grouped so as to form twisted lamellae which have a worm-like appearance in surface view. External outline irregularly wavy.
Dimensions: Holotype: shell 54 by 41 µm, overall 67 by 54 µm, height c. 5 µm. Range: shell alone 41 - 59 µm, overall diameter 51 - 72 µm.
Affinities (annotated):
Deflandre and Cookson, 1955, p.290: Membranilarnax angustivela
This species . . . differs very clearly from the known species, particularly in the short distance that separates the outer veil from the true shell membrane.