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Coronifera minor
Coronifera minus (Yu Jingxian and Zhang Wangping, 1980) emend. Mao Shaozhi and Norris, 1988
Originally Diphyes, subsequently (and now) Coronifera.
At the time of the transfer, Mao Shaozhi and Norris, 1988, emended the diagnosis of this species.
Holotype: Yu Jingxian and Zhang Wangping, 1980, pl.4, fig.5
Age: Cenomanian-Santonian
Emended diagnosis: Mao Shaozhi and Norris, 1988, p. 36
Cyst skolochorate, with two types of processes. Central body spherical to subspherical and of small to medium size (29-44 Ám in diameter). Wall thin. Periphragm smooth to finely granulate, bearing numerous processes. One large tubelike process located at antapex; process hollow, lagenate or denticulate distally, and 10-15 Ám long, 7-15 Ám wide at base. All other processes simple, slender, and acuminate; typically solid and closed distally; approximately uniform in length (about 10 Ám) and appearance; expanded and occasionally joined proximally by low crests. Those processes 1-2 Ám wide basally, straight or slightly curved, and typically closed distally. Cingulum, when discernible, indicated by alignment of processes. Archeopyle variable; type P or (tA + P) or tA + (P)a; compound operculum with precingular plate or apical plate attached.
Originally Diphyes, subsequently (and now) Coronifera.
At the time of the transfer, Mao Shaozhi and Norris, 1988, emended the diagnosis of this species.
Holotype: Yu Jingxian and Zhang Wangping, 1980, pl.4, fig.5
Age: Cenomanian-Santonian
Emended diagnosis: Mao Shaozhi and Norris, 1988, p. 36
Cyst skolochorate, with two types of processes. Central body spherical to subspherical and of small to medium size (29-44 Ám in diameter). Wall thin. Periphragm smooth to finely granulate, bearing numerous processes. One large tubelike process located at antapex; process hollow, lagenate or denticulate distally, and 10-15 Ám long, 7-15 Ám wide at base. All other processes simple, slender, and acuminate; typically solid and closed distally; approximately uniform in length (about 10 Ám) and appearance; expanded and occasionally joined proximally by low crests. Those processes 1-2 Ám wide basally, straight or slightly curved, and typically closed distally. Cingulum, when discernible, indicated by alignment of processes. Archeopyle variable; type P or (tA + P) or tA + (P)a; compound operculum with precingular plate or apical plate attached.