Back
Habibacysta
From Williams et al., 2017:
[Habibacysta, Head et al., 1989b, p. 457-458
Type species: Habibacysta tectata, Head et al., 1989b (pl.4, figs.1–2,5–6)]
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Head et al., 1989]:
Diagnosis:
Cyst sphaerical to subsphaerical, holocavate, of small to medium size having a wall composed of a solid endophragm, a columellate periphragm, and a thin ectophragm that is attached to the columallae and may be continuous or discontinuous.
Archaeopyle precingular Tye P, formed by loss of paraplate 3``.
Other paratabular features weakly, or not indicated.
Remarks:
The periphragm consists of small solid rods or granules that are attached to both endophragm and periphragm. The wall may appear granulate in plan view. There may be partial fusion between adjacent rods to form discontinuous ridges beneath the ectophragm.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Habibacysta Head et al., 1989b. From Head (1994a), Habibacysta is a spherical to subspherical cyst, holocavate, of small to medium size, having a wall composed of a solid endophragm, a columellate periphragm, and a thin ectophragm that is attached to the columellae and may be continuous or discontinuous. Archeopyle type P formed by loss of 3". Other paratabular features weakly, or not indicated.
[Habibacysta, Head et al., 1989b, p. 457-458
Type species: Habibacysta tectata, Head et al., 1989b (pl.4, figs.1–2,5–6)]
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Head et al., 1989]:
Diagnosis:
Cyst sphaerical to subsphaerical, holocavate, of small to medium size having a wall composed of a solid endophragm, a columellate periphragm, and a thin ectophragm that is attached to the columallae and may be continuous or discontinuous.
Archaeopyle precingular Tye P, formed by loss of paraplate 3``.
Other paratabular features weakly, or not indicated.
Remarks:
The periphragm consists of small solid rods or granules that are attached to both endophragm and periphragm. The wall may appear granulate in plan view. There may be partial fusion between adjacent rods to form discontinuous ridges beneath the ectophragm.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Habibacysta Head et al., 1989b. From Head (1994a), Habibacysta is a spherical to subspherical cyst, holocavate, of small to medium size, having a wall composed of a solid endophragm, a columellate periphragm, and a thin ectophragm that is attached to the columellae and may be continuous or discontinuous. Archeopyle type P formed by loss of 3". Other paratabular features weakly, or not indicated.